MISSION 29P – Centaur comet observing campaign

Last outburst: 2022 04 17.02 +/-0.64 17.15R => 16.75R

Centaur comet 29P and the James Webb Space Telescope

JWST Proposal 2416 entitled “Measuring Volatile Production in Active Centaurs with NIRSpec” led by Adam McKay (PI) is due to kick off between 2022 July 25 – July 31 by observing 22nd magnitude 39P/Oterma with its Integral Field Unit (IFU). Four further targets will be investigated before finishing with 29P during 2023 Feb 09 – Mar 30, i.e. about 3 weeks either side of its retrograde point. The methodology is similar for all targets when NIRSpec will map H2O, CO2 and CO in a 3″x3″ box centered on the nucleus as well as an offset from the nucleus to characterise the coma. Methane may also be detected if the observing epoch is shortly following an outburst. A total of 3.1 hours will be spent observing the nucleus and around 29P between 0.6-5.3 microns (resolving power ~100). The 3″x3″ box is traversed by 30 slits providing high spatial resolution. Pointing accuracy of JWST is 0.1″.
(added on 2022 Jun 18)

End of the 2021-2022 Apparition

We have finally reached the end of our coverage of the latest apparition.

Patrick Wiggins (Obs Code 718) has extended observational coverage well into the month of May, with his last time series taken on May 21 when 29P could be seen at almost 17th magnitude, sitting just 21 degrees from the limb of the Sun!

I believe this is a record for a comet so faint as 29P at the moment and just 26 days from solar conjunction.  Patrick has also imaged the field containing the comet on May 25 with the Sun 18 degrees distant and just 5 degrees altitude. The target appears to be fainter than mag 16.0R, the plate limit.

So 29P last exhibited a ‘strong outburst’ 214 days since its last one: that reached magnitude 13.1R on October 23. It appears that the historical record of 4 rapid consecutive outbursts last September has possibly resulted in a significant loss of sub-crustal pressure and that the centaur object is taking a long time to build up this pressure ahead of the next strong event. Maybe it will still be quiescent when we next see it appear after conjunction with the Sun on 2022 June 16? Coverage of the new apparition could begin around July 12 at the earliest.

Clear skies for then!

Latest lightcurve of 29P

Here are plotted the R magnitude of the comet during the current apparition. The measurement is expressed in terms of the brightness of a 5.7 arcsec radius photometric aperture. Inner coma measurements are also shown (in red) made with a 1.6 arcsec radius aperture with either 1.0-m or 2.0-m telescopes.

2021 December 21 occultation event – Report

Only one observer (Peter Ceravolo) was able to make a video recording of this potential occultation event, which was negative. Other observers were defeated by the very bright Moon nearby, the very low temperatures causing equipment malfunction, or by cloud.

Hubble imaging of Comet 29P

Hubble’s Wide-Field Camera (WFC3) is working again and has secured images of 29P on November 23, November 30 and December 7.

The first set of 10 exposures were obtained 10-12 hours after a small outburst. Here’s a preview of one of the Dec 7 frames.

Have included an inset showing roughly the same patch of sky taken with the 1.0-m at Macdonald Obs. in average seeing.

 

 

 

 

(Write-ups about 29P by Dr Tony Phillips appear on the October 15 page and on the October 26 page of the Spaceweather website)

Strong outburst at 2021 10 23.75 +/-0.03  15.70R => 13.15R

Mini-outburst (below) of 0.35 mag amplitude on 2021 10 16.88 +/-0.01 captured by Jean-Francois Soulier (France), Kritti Sharma et al. (GROWTH, India), and Tim Lister (LCO, Tenerife)

Our 5th successful outburst lightcurve !

Latest images:

(click on images for full resolution)

Peering inside the expanding coma.

The outburst coma from the October 16.88 event can be seen expanding as a fan-shaped outflow close to the nucleus at p.a. 0 – 90 deg or so.

 

 

The following two images, the colour one from Peter Tickner, indicate that there is an excess of blue light in the upper right of the coma (p.a. 270-350 deg). This may be evidence of the emission of light from ionised gas moving in this direction and overtaking the slower-moving dust. Thanks Peter.

Preface

A YouTube video of a BAA Webinar on the subject of this most unusual solar system object has been available since 2021 May 14. It features Prof Laura Woodney of California State University, San Bernardino and myself presenting some latest findings about this object and talking about possibilities of sending a space probe to investigate further.

Coverage of the latest apparition of 29P began with observations by Jean-François Soulier during the early hours of June 25.

What is Comet 29P?

This comet (aka 29P/Schwassmann-Wachmann 1) is the most observable that exists and yet we understand very little about it. It is the second-most active body in our Solar System, after Jupiter’s moon, Io, in that its level of volcanism is engendered by tidal interactions with the planet. The Comet Section has therefore launched this special project to ensure that our understanding of it is much improved such that it becomes the most observed comet that we know of.

This mysterious object is temporarily locked in its present near-circular orbit by the gravity of the giant planets, Jupiter and Saturn. Located at a mean heliocentric distance of 6.0 au, 29P describes an orbit around the Sun every 14.7 years or so, with a perihelion distance of 5.7 au and aphelion of 6.3 au. Because it never approaches the Sun closely, it never exhibits a distinctive tail, i.e. quite unlike most people’s idea of a comet. But like Jupiter and Saturn, the comet is observable during most of each year apart from the couple of months it spends in solar conjunction. Current location in the JPL Small-Body Database Browser.

Intensive observations have been underway since 2014 when the mini-outburst phenomenon was discovered, i.e. weak outbursts not exceeeding 1.0 mag in amplitude. The following set of plots show its behaviour during its seven 2014-2020 apparitions (click on the image to obtain larger views). The provisional plot for 2020 has been included.

So what can you do as an observer?

First if you want to capture images that can be used to perform photometry then do consult the Observing Tutorial.

Currently Richard Miles coordinates the observing campaign so please direct any queries to him. The main objectives are:

1. Detect any new outburst as soon as possible after it has taken place so that we can (a) determine the time of the event, and (b) initiate ‘target of opportunity’ images with the 2.0-m Faulkes Telescopes to study the resulting expanding coma.

2. Measure the brightness of the inner coma and determine (a) the maximum brightness of each outburst, and (b) follow its subsequent decline photometrically.

3. Establish a long-term archive of: (a) its photometric lightcurve (intensive observations began in 2014); (b) a high-precision astrometry archive (so its orbit is precisely known for the prediction of stellar occultations); and (c) archive images series depicting the development of the expanding coma after each significant outburst

By recording its characteristics in this way it is hoped that we can elucidate the true nature of this object

Current Status and Latest Observations:

STOP PRESS – Fourth outburst on 2021 09 27.6+/-0.2 almost 9 times greater intensity than the first two events !!!!

STOP PRESS – Third outburst on 2021 09 27.0 almost 5 times greater intensity than the former two events. Time between each pair of outbursts ~20 h

LATEST: An outburst of about 2.5 mag amplitude appears to have occurred on 2021 September 25.34 +/-0.005 followed about 20 hours later by another outburst of similar intensity

Thanks again to Patrick Wiggins (718) imaging from Utah and a good run of clear skies, and Denis Buczynski in Scotland also favoured with clear skies these past two nights, we have witnessed a double outburst, where one presumably has subsequently triggered another cryo-eruption (see listing of observations below). These two events might herald more intense activity in the coming few years. The last 2.5 years have only witnessed 8 events brighter than mag 14.5R, which coincides with similar relatively quiescent behaviour seen earlier when the comet was halfway around its orbit of the Sun, i.e. two seasons earlier. If the nucleus has a high tilt then these quiescent times may correspond to the seasons when the poles are directed towards the Sun (and Earth). Since the equatorial regions on the nucleus experience the greatest amount of solar radiation, these are likely to be more thermally processed and hence exhibit more intense cryovolcanicity. Watch out in the coming year or two for 12th magnitude outbursts.

An earlier outburst of the current apparition was detected by JF Soulier on August 25. It exhibited an outburst amplitude of 2.4 mag and subsequent imaging using the 2.0-m Faulkes Telescope North has revealed structures in the expanding inner coma.

Here’s the appearance of the coma on September 8, showing the new event as a brighter inner coma whilst the edge of the outer coma has continued to expand at 0.22 km/s:

The present 2021-2022 apparation began with the first observations reported by Jean-François Soulier on June 25 at a solar elongation of 29° in the morning sky. That means that the comet hid from us when too close to the Sun for just 13% of the time – a new record!

Previous apparition

The 2020-2021 apparition is now over with a record 338.5 days of coverage, the longest such coverage of any apparition and also the most observing epochs achieved (1168). The observers who contributed were:

The following image is the last one taken this apparition with the comet at only 19° solar elongation. It is not detected which means it was fainter than magnitude 16.0R at that time.

29P appears to have had a mini-outburst of 0.9 mag amplitude whilst at 25° solar elongation. Here’s the image:

Patrick Wiggins observing from Utah has confirmed the mini-outburst, his observations yielding a magnitude of 15.74R.

Two very weak mini-outbursts occurred during March. They were each of just 0.11 magnitudes amplitude reaching 16.9R:

With many dedicated observers following 29P, we get a much more reliable evaluation of small brightness changes even though it is now 17th magnitude. This is a good demonstration of the benefit of having more observers. For the first 11 days of coverage, the intrinsic trend due to varying distance and phase angle is expected to be a fade of 0.018 mag. However on March 17.46 +/-0.28 there looks to have been a step-change of 0.11 mag (red datapoints). This is the smallest mini-outburst that we have detected.

Recent images:

The following two images were taken at almost the same time. The one on the right is unfiltered. You can see extra coma further from the nucleus than can be seen in the r’-filtered image on the left. The reason for this may be that the nucleus has been almost quiescent during the past 30 days with little debris ejected far into space since most of it falls back. So what does escape is gas from sublimating hypervolatile ices and it is the emission lines from the gas that adds to the coma brightness far from the nucleus.

We know that the main gas species is carbon monoxide and most CO+ emission lines appear at wavelengths shorter than the passband of the r’ filter (550-690 nm). Also nitrogen (N2+) emission is mostly at the blue end of the spectrum Unfiltered images should pick up these faint gaseous emissions as can be seen in Jean-François Soulier’s image on the right. In future, using the new MuSCAT3 camera on the FT North, it should be possible to look for colour changes in the coma following weak outbursts. This will be particular so if the comet remains largely quiescent close to opposition.

See plot below also showing how data from several observers monitoring the comet allows us to detect small outbursts. We’ve had a couple of such events as shown in these plots:

 

Thanks to Jean-François Soulier (L27, Haute-Provence, France) and Nick James (970, Chelmsford, UK) who independently discovered the comet going into outburst. Thanks to Nick’s timely alert we have obtained the best coverage ever of one of this comet’s outbursts. Here is a plot of the data from L27 showing the outburst lightcurve analysed in terms of the G magnitude using a 10″ radius photometric aperture. A video of this outburst has been prepared by Jean-François.

Another outburst also took place less than 6 days later on 2020 November 25.45±0.24 with the magnitude going from 15.3R to 14.3R

29P reached opposition on November 6 and so now appears in the early evening sky making it an excellent target for northern hemisphere observers. Located in Aries at a declination of +24 degrees, the comet is visible for a couple of hours after sunset between now and the end of April.

Here below is the final light-curve for 2020-2021 showing its activity during this apparition up to April 24. Click on the plot if you want to see the full-size image. There have been two very strong outbursts: one on July 26 and a second on November 19, i.e. separated by 2 x 57.9 d in time – Note the link with the nominal periodicity of 57.71 d reported in 2016, strongly indicative of the same source outbursting after two rotations of the nucleus. Minute-by-minute coverage of the November 19 event was achieved largely thanks to Jean-François Soulier’s dedicated 29PREMOTE observatory. More on those findings later. Jean-François was also successful in catching the start of the August 22 event. In all we now have outburst lightcurves spanning the first few critical hours for FOUR events namely in 2017, 2019 and 2020(2).

In addition to strong outbursts, the nucleus has exhibited at least 24 mini-outbursts some of which have been so weak that there have been 5 instances where a large fraction of the ejecta have, after several days, fallen back onto the nucleus. This happens because the nucleus is very large (approx. 64 km across) and so has a relatively high gravity and high escape velocity (approx. 20-25 m/s). Our detailed observations are revealing this collapse of the inner coma – a behaviour unique to this body! We might indeed consider 29P not to be a comet but instead a unique Transition Object that was once a TNO.

Observational data in MPC format

Full archive datasets

 
 
Recent observations
(Date, RA, Dec, Magnitude, Observatory Code, Photometric aperture in arcsec, Comments)

Listed below are the observations for the last month or so. The number to the right of the observatory

0029P C2022 03 08.84552 04 23 26.74 +29 11 25.5 16.75R B96 4.96″ (5.58″)
0029P C2022 03 08.84715 04 23 26.77 +29 11 23.9 16.72R B96
0029P C2022 03 08.84879 04 23 26.81 +29 11 24.4 16.75R B96
0029P C2022 03 08.85042 04 23 26.83 +29 11 24.3 16.75R B96
0029P KC2022 03 08.85205 04 23 26.87 +29 11 24.3 16.78R B96
0029P C2022 03 08.85205 04 23 26.90 +29 11 24.3 16.78R B96
0029P C2022 03 08.85369 04 23 26.93 +29 11 24.2 16.72R B96
0029P C2022 03 08.85532 04 23 26.99 +29 11 24.9 16.79R B96
0029P C2022 03 08.85696 04 23 27.01 +29 11 24.1 16.71R B96
0029P C2022 03 08.85859 04 23 27.06 +29 11 24.4 16.93R B96
0029P C2022 03 08.86032 04 23 27.08 +29 11 23.1 16.86R B96
0029P C2022 03 08.86196 04 23 27.11 +29 11 23.4 16.96R B96
0029P C2022 03 08.86359 04 23 27.13 +29 11 23.7 17.09R B96
0029P C2022 03 08.86522 04 23 27.18 +29 11 24.1 16.91R B96
0029P KC2022 03 08.86522 04 23 27.22 +29 11 24.0 16.95R B96
0029P C2022 03 08.86685 04 23 27.21 +29 11 24.2 17.00R B96
0029P C2022 03 08.86850 04 23 27.29 +29 11 24.0 16.70R B96
0029P C2022 03 08.87013 04 23 27.40 +29 11 23.4 17.04R B96

0029P dC2022 03 09.15973 04 23 34.83 +29 11 12.3 16.89R XXX 4.84″ CSMorris 120s exp
0029P dC2022 03 09.16213 04 23 34.83 +29 11 13.2 16.83R XXX 4.84″ CSMorris 120s exp
0029P dC2022 03 09.16380 04 23 34.92 +29 11 12.1 16.86R XXX 4.84″ CSMorris 120s exp
0029P dC2022 03 09.16546 04 23 34.89 +29 11 13.1 16.92R XXX 4.84″ CSMorris 120s exp
0029P dC2022 03 09.16714 04 23 34.91 +29 11 12.1 16.99R XXX 4.84″ CSMorris 120s exp
0029P dC2022 03 09.16912 04 23 34.97 +29 11 12.2 16.80R XXX 4.84″ CSMorris 120s exp
0029P dC2022 03 09.17100 04 23 35.05 +29 11 12.1 16.96R XXX 4.84″ CSMorris 120s exp
0029P dC2022 03 09.17297 04 23 35.10 +29 11 11.0 16.62R XXX 4.84″ CSMorris 120s exp

0029P KC2022 03 09.80005 04 23 51.44 +29 10 47.8 16.23R K60 5.88″ (6.30″) R
0029P KC2022 03 09.80431 04 23 51.58 +29 10 45.7 16.70R K60
0029P KC2022 03 09.81600 04 23 51.85 +29 10 46.9 16.26R K60
0029P KC2022 03 09.82023 04 23 52.04 +29 10 45.6 16.53R K60
0029P KC2022 03 09.83221 04 23 52.43 +29 10 45.9 16.38R K60
0029P KC2022 03 09.83647 04 23 52.47 +29 10 45.1 16.59R K60

0029P KC2022 03 09.81369 04 23 51.79 +29 10 46.7 16.58R L27 5.96″ (6.71″)
0029P KC2022 03 09.85814 04 23 52.96 +29 10 45.5 16.36R L27(star)

0029P C2022 03 09.85686 04 23 52.92 +29 10 44.8 16.61R B96 4.96″ (5.58″)
0029P C2022 03 09.85850 04 23 52.94 +29 10 44.6 16.83R B96
0029P C2022 03 09.86014 04 23 52.99 +29 10 44.4 16.74R B96
0029P KC2022 03 09.86095 04 23 53.03 +29 10 44.3 16.62R B96
0029P C2022 03 09.86177 04 23 53.06 +29 10 44.4 16.68R B96
0029P C2022 03 09.86340 04 23 53.13 +29 10 44.6 16.64R B96

0029P dC2022 03 10.16330 04 24 01.03 +29 10 34.3 16.54R XXX 4.84″ CSMorris 120s exp
0029P dC2022 03 10.16779 04 24 01.05 +29 10 33.6 16.48R XXX 4.84″ CSMorris 120s exp
0029P dC2022 03 10.17176 04 24 01.18 +29 10 33.1 16.38R XXX 4.84″ CSMorris 120s exp
0029P dC2022 03 10.17374 04 24 01.24 +29 10 33.6 16.64R XXX 4.84″ CSMorris 120s exp
0029P dC2022 03 10.17624 04 24 01.33 +29 10 34.5 16.34R XXX 4.84″ CSMorris 120s exp

0029P KC2022 03 10.76556 04 24 17.04 +29 10 10.4 16.15R K60 5.88″ (6.30″) R
0029P KC2022 03 10.77603 04 24 17.28 +29 10 10.1 16.38R K60
0029P KC2022 03 10.78678 04 24 17.62 +29 10 10.4 16.18R K60
0029P KC2022 03 10.79750 04 24 17.91 +29 10 09.3 16.42R K60
0029P KC2022 03 10.80877 04 24 18.18 +29 10 08.6 16.30R K60
0029P KC2022 03 10.82929 04 24 18.71 +29 10 06.8 16.27R K60
0029P KC2022 03 10.84061 04 24 19.02 +29 10 08.3 16.26R K60
0029P KC2022 03 10.89326 04 24 20.51 +29 10 06.4 16.14R K60
0029P KC2022 03 10.90361 04 24 20.63 +29 10 05.7 16.21R K60
0029P KC2022 03 10.91372 04 24 21.04 +29 10 05.4 16.46R K60

0029P C2022 03 10.80852 04 24 18.17 +29 10 08.9 16.72R B96 4.96″ (5.58″)
0029P C2022 03 10.81015 04 24 18.22 +29 10 08.9 16.66R B96
0029P C2022 03 10.81178 04 24 18.24 +29 10 09.2 16.68R B96
0029P KC2022 03 10.81179 04 24 18.26 +29 10 09.0 16.63R B96
0029P C2022 03 10.81343 04 24 18.19 +29 10 10.0 16.50R B96
0029P C2022 03 10.81506 04 24 18.35 +29 10 08.9 16.46R B96
0029P C2022 03 10.81681 04 24 18.38 +29 10 08.8 16.55R B96
0029P C2022 03 10.81844 04 24 18.44 +29 10 08.6 16.58R B96
0029P C2022 03 10.82007 04 24 18.45 +29 10 08.3 16.50R B96
0029P C2022 03 10.82170 04 24 18.51 +29 10 08.3 16.50R B96
0029P KC2022 03 10.82334 04 24 18.54 +29 10 08.2 16.60R B96
0029P C2022 03 10.82335 04 24 18.56 +29 10 08.6 16.51R B96
0029P C2022 03 10.82498 04 24 18.62 +29 10 08.4 16.74R B96
0029P C2022 03 10.82661 04 24 18.64 +29 10 08.6 16.53R B96
0029P C2022 03 10.82824 04 24 18.66 +29 10 08.1 16.56R B96
0029P C2022 03 10.82988 04 24 18.71 +29 10 08.2 16.55R B96

0029P KC2022 03 10.88670 04 24 20.20 +29 10 06.8 16.43R C10 6.48″ (7.29″)
0029P KC2022 03 10.90056 04 24 20.59 +29 10 06.1 16.49R C10
0029P KC2022 03 10.91932 04 24 21.08 +29 10 05.3 16.63R C10

0029P dC2022 03 12.15997 04 24 54.88 +29 09 21.7 16.64R XXX 4.84″ CSMorris 120s exp
0029P dC2022 03 12.16248 04 24 54.90 +29 09 21.6 16.63R XXX 4.84″ CSMorris 120s exp
0029P dC2022 03 12.16414 04 24 54.97 +29 09 20.4 16.63R XXX 4.84″ CSMorris 120s exp
0029P dC2022 03 12.16612 04 24 55.05 +29 09 22.3 16.64R XXX 4.84″ CSMorris 120s exp
0029P dC2022 03 12.16791 04 24 55.11 +29 09 20.6 16.67R XXX 4.84″ CSMorris 120s exp
0029P dC2022 03 12.16957 04 24 55.11 +29 09 20.6 16.74R XXX 4.84″ CSMorris 120s exp
0029P dC2022 03 12.17124 04 24 55.09 +29 09 21.7 16.64R XXX 4.84″ CSMorris 120s exp
0029P dC2022 03 12.17457 04 24 55.26 +29 09 21.3 16.61R XXX 4.84″ CSMorris 120s exp
0029P dC2022 03 12.17626 04 24 55.32 +29 09 20.6 16.53R XXX 4.84″ CSMorris 120s exp
0029P dC2022 03 12.17794 04 24 55.35 +29 09 21.1 16.63R XXX 4.84″ CSMorris 120s exp
0029P dC2022 03 12.17961 04 24 55.40 +29 09 20.7 16.61R XXX 4.84″ CSMorris 120s exp
0029P dC2022 03 12.18253 04 24 55.50 +29 09 20.4 16.54R XXX 4.84″ CSMorris 120s exp

0029P C2022 03 12.22372 04 24 56.66 +29 09 19.6 16.61R F65 5.59″ (5.72″) RM

0029P KC2022 03 12.79750 04 25 12.67 +29 08 59.7 16.19R K60 5.88″ (6.30″) Clear
0029P KC2022 03 12.82289 04 25 13.32 +29 08 58.8 16.39R K60 5.88″ (6.30″) R
0029P KC2022 03 12.82706 04 25 13.45 +29 08 58.6 16.43R K60 5.88″ (6.30″) Clear
0029P KC2022 03 12.84811 04 25 14.09 +29 08 58.3 16.48R K60 5.88″ (6.30″) R
0029P KC2022 03 12.85234 04 25 14.21 +29 08 57.8 16.34R K60 5.88″ (6.30″) Clear
0029P KC2022 03 12.88201 04 25 15.07 +29 08 56.4 16.30R K60 5.88″ (6.30″) R

0029P C2022 03 13.23895 04 25 25.00 +29 08 45.7 16.68R F65 5.59″ (5.72″) CSJ
0029P C2022 03 13.24017 04 25 25.04 +29 08 45.7 16.72R F65

0029P KC2022 03 13.80307 04 25 41.21 +29 08 26.9 16.42R K60 5.88″ (6.30″) Clear
0029P KC2022 03 13.82104 04 25 41.59 +29 08 27.1 16.35R K60
0029P KC2022 03 13.83956 04 25 42.16 +29 08 27.7 16.32R K60
0029P KC2022 03 13.85759 04 25 42.70 +29 08 26.8 16.32R K60
0029P KC2022 03 13.89478 04 25 43.75 +29 08 22.7 16.63R K60

0029P KC2022 03 13.82401 04 25 41.59 +29 08 26.9 16.54R Z09 5.11″ (5.48″) R filter variable extinction?
0029P KC2022 03 13.86600 04 25 42.75 +29 08 23.7 16.42R Z09 5.11″ (5.48″) R filter variable extinction?
0029P KC2022 03 13.86970 04 25 42.87 +29 08 24.6 16.66R Z09 5.11″ (5.48″) R filter variable extinction?
0029P KC2022 03 13.87341 04 25 42.97 +29 08 24.7 16.80R Z09 5.11″ (5.48″) R filter stable onwards
0029P KC2022 03 13.87341 04 25 43.01 +29 08 24.7 16.89R Z09
0029P KC2022 03 13.87712 04 25 43.13 +29 08 24.4 16.73R Z09
0029P KC2022 03 13.88082 04 25 43.25 +29 08 24.6 16.87R Z09

0029P C2022 03 14.23053 04 25 53.27 +29 08 14.4 16.81R F65 5.59″ (5.72″) AD

0029P C2022 03 14.87859 04 26 12.04 +29 07 54.2 16.58R XXX 5.04″ (5.46″) R. Sargent

0029P KC2022 03 16.80008 04 27 09.13 +29 06 59.6 16.62R Z09 5.11″ (5.48″) R filter
0029P KC2022 03 16.80378 04 27 09.25 +29 06 59.8 16.63R Z09
0029P KC2022 03 16.80749 04 27 09.38 +29 07 00.4 16.64R Z09
0029P KC2022 03 16.81119 04 27 09.51 +29 06 59.8 17.04R Z09
0029P KC2022 03 16.81490 04 27 09.54 +29 06 59.7 16.62R Z09
0029P KC2022 03 16.81860 04 27 09.71 +29 06 59.6 16.45R Z09
0029P KC2022 03 16.82231 04 27 09.78 +29 06 59.4 16.90R Z09
0029P KC2022 03 16.82601 04 27 09.94 +29 06 59.4 16.53R Z09
0029P KC2022 03 16.82972 04 27 10.04 +29 06 59.2 16.58R Z09
0029P KC2022 03 16.83342 04 27 10.14 +29 06 59.2 16.60R Z09

0029P KC2022 03 16.87114 04 27 11.35 +29 06 58.2 16.57R I81 5.15″ (5.67″) R 3x120s
0029P KC2022 03 16.87536 04 27 11.44 +29 06 57.9 16.61R I81
0029P KC2022 03 16.87962 04 27 11.58 +29 06 57.6 16.61R I81

**mini-outburst at 2022 03 17.33 +/-0.36 16.75R => 16.30R

0029P KC2022 02 17.78704 04 17 18.76 +29 29 49.5 16.25R I81 5.15″ (5.67″) R 3x120s
0029P KC2022 02 17.79129 04 17 18.79 +29 29 49.5 16.19R I81
0029P KC2022 02 17.79556 04 17 18.78 +29 29 48.3 16.19R I81
0029P KC2022 02 17.79983 04 17 18.86 +29 29 48.2 16.21R I81

0029P C2022 03 17.92583 04 27 43.55 +29 06 31.2 16.28R XXX 5.04″ (5.46″) R. Sargent

0029P KC2022 03 18.78953 04 28 10.41 +29 06 10.5 16.35R C10 6.48″ (7.29″)
0029P KC2022 03 18.83919 04 28 11.96 +29 06 09.2 16.35R C10
0029P KC2022 03 18.88400 04 28 13.31 +29 06 08.1 16.40R C10

0029P C2022 03 18.81711 04 28 11.26 +29 06 09.7 16.25R XXX 5.04″ (5.46″) R. Sargent
0029P C2022 03 18.88443 04 28 13.38 +29 06 08.0 16.27R XXX
0029P C2022 03 18.89174 04 28 13.58 +29 06 07.9 16.35R XXX

0029P C2022 03 18.84146 04 28 12.02 +29 06 09.5 16.35R Z31 5.46″ (5.66″)

0029P KC2022 03 18.83507 04 28 11.88 +29 06 09.3 16.17R K60 5.88″ (6.30″) Clear
0029P KC2022 03 18.83507 04 28 11.95 +29 06 08.6 16.22R K60
0029P KC2022 03 18.84270 04 28 12.18 +29 06 08.7 16.43R K60
0029P KC2022 03 18.85111 04 28 12.42 +29 06 08.2 16.27R K60
0029P KC2022 03 18.85962 04 28 12.72 +29 06 08.0 16.22R K60
0029P KC2022 03 18.86823 04 28 13.05 +29 06 08.2 16.49R K60
0029P KC2022 03 18.88302 04 28 13.35 +29 06 07.4 16.15R K60 poorer conditions
0029P KC2022 03 18.89209 04 28 13.61 +29 06 06.6 16.10R K60
0029P KC2022 03 18.90117 04 28 14.08 +29 06 07.6 16.32R K60

0029P KC2022 03 19.78736 04 28 42.08 +29 05 47.0 16.37R K60 5.88″ (6.30″) Clear good transparency
0029P KC2022 03 19.79581 04 28 42.30 +29 05 47.4 16.39R K60
0029P KC2022 03 19.80416 04 28 42.60 +29 05 46.8 16.50R K60
0029P KC2022 03 19.81323 04 28 42.87 +29 05 46.3 16.36R K60
0029P KC2022 03 19.82064 04 28 43.13 +29 05 46.4 16.39R K60
0029P KC2022 03 19.82887 04 28 43.33 +29 05 46.2 16.42R K60
0029P KC2022 03 19.83709 04 28 43.61 +29 05 46.1 16.54R K60
0029P KC2022 03 19.85354 04 28 44.17 +29 05 45.8 16.44R K60 cloud arrived
0029P KC2022 03 19.86999 04 28 44.78 +29 05 45.2 16.36R K60

0029P C2022 03 19.81322 04 28 42.75 +29 05 46.9 16.30R XXX 5.04″ (5.46″) R. Sargent

0029P KC2022 03 19.80927 04 28 42.61 +29 05 47.6 16.35R C10 6.48″ (7.29″)
0029P KC2022 03 19.86859 04 28 44.49 +29 05 45.9 16.45R C10
0029P KC2022 03 19.92703 04 28 46.37 +29 05 44.6 16.39R C10

0029P C2022 03 20.82477 04 29 15.29 +29 05 25.5 15.71R XXX 5.04″ (5.46″) R. Sargent
0029P C2022 03 20.89580 04 29 17.57 +29 05 23.9 15.66R XXX

0029P KC2022 03 20.80088 04 29 14.63 +29 05 25.8 16.50R K60 5.88″ (6.30″) Clear high extinction at times
0029P KC2022 03 20.80936 04 29 14.92 +29 05 25.8 16.45R K60
0029P KC2022 03 20.82631 04 29 15.53 +29 05 25.9 16.31R K60
0029P KC2022 03 20.84297 04 29 16.03 +29 05 25.2 16.43R K60
0029P KC2022 03 20.87604 04 29 16.98 +29 05 24.1 15.96R K60
0029P KC2022 03 20.89253 04 29 17.66 +29 05 23.3 16.06R K60
0029P KC2022 03 20.90904 04 29 18.01 +29 05 23.5 16.27R K60

0029P KC2022 03 20.87948 04 29 16.98 +29 05 24.2 16.52R I81 5.15″ (5.67″) R 3x120s
0029P KC2022 03 20.88374 04 29 17.13 +29 05 24.0 16.53R I81
0029P KC2022 03 20.88800 04 29 17.32 +29 05 24.5 16.52R I81
0029P KC2022 03 20.89982 04 29 17.69 +29 05 24.3 16.63R I81
0029P KC2022 03 20.90409 04 29 17.83 +29 05 22.7 16.66R I81
0029P KC2022 03 20.90836 04 29 17.97 +29 05 23.8 16.51R I81
0029P KC2022 03 20.91263 04 29 18.06 +29 05 23.5 16.59R I81

0029P C2022 03 20.87106 04 29 16.77 +29 05 24.8 16.53R Z31 5.46″ (5.66″) BW
0029P C2022 03 20.87106 04 29 16.76 +29 05 24.6 16.61G Z31

0029P KC2022 03 21.85552 04 29 48.93 +29 05 06.0 16.24R K60 5.88″ (6.30″) Clear variable transparency
0029P KC2022 03 21.87205 04 29 49.65 +29 05 04.1 16.28R K60
0029P KC2022 03 21.88028 04 29 49.94 +29 05 04.6 16.31R K60
0029P KC2022 03 21.88852 04 29 50.13 +29 05 03.6 16.13R K60
0029P KC2022 03 21.89676 04 29 50.45 +29 05 03.7 16.34R K60
0029P KC2022 03 21.90499 04 29 50.62 +29 05 02.9 16.34R K60
0029P KC2022 03 21.91323 04 29 51.04 +29 05 03.3 16.10R K60
0029P KC2022 03 21.92147 04 29 51.42 +29 05 04.0 16.16R K60

0029P KC2022 03 22.79121 04 30 20.01 +29 04 48.4 16.27R L27 (star)
0029P KC2022 03 22.83492 04 30 21.47 +29 04 47.0 16.39R L27 5.96″ (6.71″)
0029P KC2022 03 22.87640 04 30 22.84 +29 04 46.2 16.48R L27

0029P C2022 03 22.91753 04 30 24.26 +29 04 45.1 16.66R XXX 5.04″ (5.46″) R. Sargent

0029P dC2022 03 23.14374 04 30 31.78 +29 04 41.1 16.67R XXX 4.84″ CSMorris 120s exp
0029P dC2022 03 23.14542 04 30 31.86 +29 04 41.9 16.74R XXX 4.84″ CSMorris 120s exp
0029P dC2022 03 23.14834 04 30 31.94 +29 04 41.8 16.73R XXX 4.84″ CSMorris 120s exp
0029P dC2022 03 23.15043 04 30 31.97 +29 04 41.8 16.64R XXX 4.84″ CSMorris 120s exp
0029P dC2022 03 23.15282 04 30 32.13 +29 04 41.0 16.82R XXX 4.84″ CSMorris 120s exp
0029P dC2022 03 23.15459 04 30 32.14 +29 04 41.0 16.69R XXX 4.84″ CSMorris 120s exp
0029P dC2022 03 23.15626 04 30 32.28 +29 04 41.8 16.81R XXX 4.84″ CSMorris 120s exp
0029P dC2022 03 23.15836 04 30 32.30 +29 04 40.8 16.86R XXX 4.84″ CSMorris 120s exp

0029P C2022 03 23.84758 04 30 55.64 +29 04 29.2 16.65R XXX 5.04″ (5.46″) R. Sargent

0029P KC2022 03 23.86218 04 30 56.19 +29 04 28.8 16.44R I81 5.15″ (5.67″) R 3x120s
0029P KC2022 03 23.86642 04 30 56.31 +29 04 28.6 16.48R I81
0029P KC2022 03 23.87069 04 30 56.46 +29 04 28.5 16.51R I81
0029P KC2022 03 23.87495 04 30 56.60 +29 04 29.1 16.46R I81

0029P KC2022 03 23.79236 04 30 53.77 +29 04 30.3 16.29R L27 5.96″ (6.71″)
0029P KC2022 03 23.83949 04 30 55.31 +29 04 29.7 16.25R L27
0029P KC2022 03 23.89505 04 30 57.21 +29 04 29.0 16.28R L27

0029P KC2022 03 23.80295 04 30 54.31 +29 04 29.5 16.34R K60 5.88″ (6.30″)
0029P KC2022 03 23.81146 04 30 54.55 +29 04 29.2 16.35R K60
0029P KC2022 03 23.82856 04 30 55.15 +29 04 29.0 16.29R K60
0029P KC2022 03 23.84747 04 30 55.77 +29 04 28.5 16.29R K60
0029P KC2022 03 23.86437 04 30 56.43 +29 04 28.3 16.43R K60
0029P KC2022 03 23.88147 04 30 56.93 +29 04 28.3 16.42R K60
0029P KC2022 03 23.89638 04 30 57.37 +29 04 28.1 16.41R K60

0029P C2022 03 23.81289 04 30 54.46 +29 04 30.3 16.54R B96 4.96″ (5.58″)
0029P C2022 03 23.81454 04 30 54.56 +29 04 29.7 16.40R B96
0029P KC2022 03 23.81617 04 30 54.60 +29 04 29.8 16.57R B96
0029P C2022 03 23.81618 04 30 54.61 +29 04 29.7 16.67R B96
0029P C2022 03 23.81781 04 30 54.67 +29 04 29.8 16.55R B96
0029P C2022 03 23.81945 04 30 54.70 +29 04 29.8 16.57R B96
0029P C2022 03 23.82282 04 30 54.84 +29 04 29.5 16.43R B96
0029P C2022 03 23.82446 04 30 54.89 +29 04 29.1 16.50R B96
0029P C2022 03 23.82609 04 30 54.94 +29 04 29.8 16.43R B96
0029P C2022 03 23.82609 04 30 54.94 +29 04 29.8 16.43R B96
0029P KC2022 03 23.82773 04 30 55.02 +29 04 29.0 16.56R B96
0029P C2022 03 23.82773 04 30 55.02 +29 04 29.3 16.56R B96
0029P C2022 03 23.82936 04 30 55.07 +29 04 29.4 16.53R B96
0029P C2022 03 23.83100 04 30 55.09 +29 04 29.5 16.49R B96
0029P C2022 03 23.83263 04 30 55.16 +29 04 29.2 16.49R B96
0029P C2022 03 23.83426 04 30 55.22 +29 04 29.2 16.58R B96

0029P C2022 03 24.13592 04 31 05.40 +29 04 25.0 16.44R 718 5.18″ (5.55″)
0029P C2022 03 24.13676 04 31 05.48 +29 04 25.0 16.49R 718
0029P C2022 03 24.13759 04 31 05.39 +29 04 24.2 16.49R 718

0029P dC2022 03 24.14486 04 31 05.78 +29 04 24.9 16.64R XXX 4.84″ CSMorris 120s exp
0029P dC2022 03 24.14674 04 31 05.80 +29 04 23.8 16.52R XXX 4.84″ CSMorris 120s exp
0029P dC2022 03 24.15174 04 31 05.94 +29 04 24.7 16.56R XXX 4.84″ CSMorris 120s exp
0029P dC2022 03 24.15341 04 31 06.02 +29 04 24.8 16.67R XXX 4.84″ CSMorris 120s exp
0029P dC2022 03 24.15508 04 31 06.08 +29 04 24.9 16.60R XXX 4.84″ CSMorris 120s exp
0029P dC2022 03 24.15758 04 31 06.11 +29 04 24.7 16.62R XXX 4.84″ CSMorris 120s exp

0029P KC2022 03 24.80405 04 31 28.54 +29 04 13.6 16.34R K60 5.88″ (6.30″)
0029P KC2022 03 24.81928 04 31 29.04 +29 04 13.9 16.56R K60
0029P KC2022 03 24.83630 04 31 29.65 +29 04 13.2 16.44R K60
0029P KC2022 03 24.85456 04 31 30.22 +29 04 12.9 16.42R K60
0029P KC2022 03 24.87191 04 31 30.87 +29 04 13.2 16.45R K60
0029P KC2022 03 24.87933 04 31 31.11 +29 04 12.6 16.65R K60

0029P C2022 03 24.81414 04 31 28.78 +29 04 13.9 16.67R B96 4.96″ (5.58″)
0029P C2022 03 24.81578 04 31 28.83 +29 04 14.1 16.66R B96
0029P C2022 03 24.81742 04 31 28.89 +29 04 13.8 16.59R B96
0029P C2022 03 24.81905 04 31 28.94 +29 04 13.8 16.55R B96
0029P KC2022 03 24.82068 04 31 28.99 +29 04 13.9 16.66R B96
0029P C2022 03 24.82068 04 31 28.99 +29 04 14.1 16.67R B96
0029P C2022 03 24.82232 04 31 29.03 +29 04 13.9 16.55R B96
0029P C2022 03 24.82396 04 31 29.08 +29 04 13.8 16.71R B96
0029P C2022 03 24.82559 04 31 29.15 +29 04 13.6 16.68R B96
0029P C2022 03 24.82722 04 31 29.22 +29 04 13.9 16.56R B96

0029P C2022 03 25.21995 04 31 42.71 +29 04 08.2 16.63R 718 5.18″ (5.55″)
0029P C2022 03 25.22078 04 31 42.81 +29 04 07.8 16.62R 718

0029P KC2022 03 25.80905 04 32 03.25 +29 04 00.5 16.42R C10 6.48″ (7.29″)
0029P KC2022 03 25.85852 04 32 04.97 +29 03 59.5 16.46R C10
0029P KC2022 03 25.90236 04 32 06.52 +29 03 58.8 16.56R C10

0029P C2022 03 25.86578 04 32 05.24 +29 03 59.2 16.65R Z31 5.46″ (5.66″) BW

0029P C2022 03 25.87735 04 32 05.65 +29 03 58.9 16.41R G40 5.08″ (5.71″) 0.43-m N. Paul
0029P C2022 03 25.90080 04 32 06.47 +29 03 59.3 16.52R G40

0029P KC2022 03 25.91265 04 32 06.96 +29 03 58.0 16.32R I81 5.15″ (5.67″) R 3x120s
0029P KC2022 03 25.91692 04 32 07.06 +29 03 57.8 16.61R I81
0029P KC2022 03 25.92118 04 32 07.23 +29 03 57.8 16.63R I81
0029P KC2022 03 25.92545 04 32 07.39 +29 03 57.8 16.55R I81

0029P KC2022 03 26.81281 04 32 38.61 +29 03 46.9 16.61R C10 6.48″ (7.29″)
0029P KC2022 03 26.86142 04 32 40.32 +29 03 46.2 16.64R C10
0029P KC2022 03 26.90595 04 32 41.90 +29 03 46.2 16.52R C10

0029P C2022 03 26.86824 04 32 40.59 +29 03 45.8 16.73R XXX 5.04″ (5.46″) R. Sargent
0029P C2022 03 26.87782 04 32 40.93 +29 03 45.6 16.68R XXX

0029P KC2022 03 27.81782 04 33 14.68 +29 03 34.1 16.64R K60 5.88″ (6.30″)
0029P KC2022 03 27.83354 04 33 15.25 +29 03 34.4 16.67R K60
0029P KC2022 03 27.85273 04 33 15.91 +29 03 33.8 16.71R K60
0029P KC2022 03 27.87013 04 33 16.57 +29 03 33.9 16.67R K60
0029P KC2022 03 27.88581 04 33 17.14 +29 03 33.0 16.73R K60
0029P KC2022 03 27.89557 04 33 17.37 +29 03 33.4 16.83R K60

0029P C2022 03 27.81972 04 33 14.61 +29 03 34.5 16.75R B96 4.96″ (5.58″)
0029P C2022 03 27.82135 04 33 14.66 +29 03 34.3 16.78R B96
0029P C2022 03 27.82300 04 33 14.72 +29 03 34.6 16.79R B96
0029P KC2022 03 27.82381 04 33 14.75 +29 03 34.2 16.86R B96
0029P C2022 03 27.82463 04 33 14.77 +29 03 34.8 16.79R B96
0029P C2022 03 27.82626 04 33 14.85 +29 03 34.7 16.79R B96
0029P C2022 03 27.82791 04 33 14.85 +29 03 34.1 16.91R B96

0029P KC2022 03 27.82947 04 33 14.90 +29 03 35.5 16.72R C10 6.48″ (7.29″)
0029P KC2022 03 27.87016 04 33 16.35 +29 03 34.4 16.78R C10
0029P KC2022 03 27.90683 04 33 17.67 +29 03 34.0 16.81R C10

0029P KC2022 03 28.87930 04 33 52.97 +29 03 23.1 16.85R I81 5.15″ (5.67″) R 3x120s
0029P KC2022 03 28.88357 04 33 53.13 +29 03 23.2 16.88R I81
0029P KC2022 03 28.88784 04 33 53.28 +29 03 23.2 17.00R I81
0029P KC2022 03 28.89211 04 33 53.43 +29 03 23.0 16.84R I81

0029P C2022 03 29.85817 04 34 28.83 +29 03 15.0 17.04R Z31 5.46″ (5.66″) BW

0029P KC2022 03 30.85784 04 35 06.01 +29 03 06.0 17.02R I81 5.15″ (5.67″) R 3x120s
0029P KC2022 03 30.86211 04 35 06.17 +29 03 06.0 17.03R I81
0029P KC2022 03 30.86639 04 35 06.33 +29 03 05.9 16.92R I81
0029P KC2022 03 30.87066 04 35 06.49 +29 03 05.8 16.93R I81

0029P KC2022 03 31.82575 04 35 42.35 +29 03 01.1 17.37R Z09 5.11″ (5.48″) R filter
0029P KC2022 03 31.82947 04 35 42.48 +29 02 59.5 17.32R Z09
0029P KC2022 03 31.83320 04 35 42.67 +29 02 59.9 16.87R Z09
0029P KC2022 03 31.83712 04 35 42.70 +29 02 58.6 17.33R Z09
0029P KC2022 03 31.84084 04 35 42.92 +29 03 00.0 16.94R Z09
0029P KC2022 03 31.84456 04 35 43.10 +29 02 59.2 17.26R Z09

0029P C2022 03 31.89022 04 35 44.80 +29 02 59.1 16.91R XXX 5.04″ (5.46″) R. Sargent
0029P C2022 03 31.89752 04 35 45.08 +29 02 59.1 16.97R XXX

0029P KC2022 04 01.84242 04 36 21.29 +29 02 52.7 17.14R K60 5.88″ (6.30″)
0029P KC2022 04 01.84905 04 36 21.47 +29 02 53.2 16.72R K60
0029P KC2022 04 01.85729 04 36 21.70 +29 02 53.4 16.89R K60
0029P KC2022 04 01.86633 04 36 22.10 +29 02 52.6 16.90R K60

0029P KC2022 04 01.86214 04 36 21.77 +29 02 53.1 17.38R Z09 5.11″ (5.48″) R filter

0029P C2022 04 02.19615 04 36 34.56 +29 02 51.6 17.10R 718 5.18″ (5.55″)
0029P C2022 04 02.19699 04 36 34.64 +29 02 51.4 17.10R 718
0029P C2022 04 02.19782 04 36 34.65 +29 02 51.8 17.02R 718
0029P C2022 04 02.19865 04 36 34.68 +29 02 50.7 17.04R 718
0029P C2022 04 02.19949 04 36 34.75 +29 02 51.8 16.98R 718

**mini-outburst at 2022 04 02.51 +/-0.25 17.10R => 16.85R

0029P C2022 04 02.81561 04 36 58.70 +29 02 48.5 16.71R K60 5.88″ (6.30″)
0029P C2022 04 02.82321 04 36 59.01 +29 02 48.2 16.72R K60
0029P C2022 04 02.85897 04 37 00.30 +29 02 48.6 16.76R K60
0029P C2022 04 02.87169 04 37 00.91 +29 02 48.6 16.70R K60
0029P C2022 04 02.87932 04 37 01.12 +29 02 48.4 16.69R K60
0029P C2022 04 02.88778 04 37 01.51 +29 02 49.2 16.85R K60

0029P KC2022 04 02.83270 04 36 59.17 +29 02 48.7 17.29R Z09 5.11″ (5.48″) R filter
0029P KC2022 04 02.83640 04 36 59.28 +29 02 48.9 16.80R Z09
0029P KC2022 04 02.84011 04 36 59.46 +29 02 48.7 16.91R Z09
0029P KC2022 04 02.84381 04 36 59.59 +29 02 48.5 16.94R Z09
0029P KC2022 04 02.84751 04 36 59.67 +29 02 50.2 16.86R Z09
0029P KC2022 04 02.85121 04 36 59.89 +29 02 48.5 16.97R Z09

0029P KC2022 04 02.86801 04 37 00.59 +29 02 48.4 16.88R I81 5.15″ (5.67″) R 3x120s
0029P KC2022 04 02.87228 04 37 00.75 +29 02 48.5 16.98R I81
0029P KC2022 04 02.87655 04 37 00.93 +29 02 48.4 16.89R I81
0029P KC2022 04 02.88079 04 37 01.09 +29 02 48.4 16.79R I81

0029P C2022 04 02.86266 04 37 00.34 +29 02 49.0 16.99R Z30 5.36″ (5.70″) Rc
0029P C2022 04 02.86831 04 37 00.56 +29 02 48.8 16.86R Z30
0029P C2022 04 02.87285 04 37 00.72 +29 02 48.9 16.91R Z30
0029P C2022 04 02.87740 04 37 00.91 +29 02 48.9 16.91R Z30
0029P C2022 04 02.88286 04 37 01.12 +29 02 48.8 16.89R Z30

0029P C2022 04 02.88567 04 37 01.13 +29 02 48.5 17.14R K01
0029P C2022 04 02.89249 04 37 01.39 +29 02 48.3 17.16R K01
0029P C2022 04 02.89932 04 37 01.64 +29 02 48.3 16.93R K01
0029P C2022 04 02.90536 04 37 01.87 +29 02 48.2 16.96R K01

0029P C2022 04 03.19235 04 37 13.13 +29 02 47.6 16.85R 718 5.18″ (5.55″)
0029P C2022 04 03.19319 04 37 13.15 +29 02 47.4 16.70R 718
0029P C2022 04 03.19402 04 37 13.15 +29 02 47.6 16.76R 718
0029P C2022 04 03.19485 04 37 13.21 +29 02 47.9 17.02R 718
0029P C2022 04 03.19569 04 37 13.26 +29 02 47.2 16.93R 718
0029P KC2022 04 03.19402 04 37 13.19 +29 02 47.5 16.87R 718

0029P KC2022 04 03.82460 04 37 37.82 +29 02 45.1 17.03R Z09
0029P KC2022 04 03.83207 04 37 38.15 +29 02 45.4 16.90R Z09
0029P KC2022 04 03.83570 04 37 38.20 +29 02 44.5 17.04R Z09

0029P KC2022 04 07.22021 04 39 53.12 +29 02 41.1 16.98R 718 5.18″ (5.55″)

0029P KC2022 04 07.22021 04 39 53.12 +29 02 41.1 16.98R 718 5.18″ (5.55″)

0029P KC2022 04 07.89709 04 40 20.70 +29 02 40.6 16.84R Z10 5.49″ (5.79″) 20x60s

0029P C2022 04 08.13958 04 40 30.64 +29 02 40.9 17.02R 718 5.18″ (5.55″)
0029P C2022 04 08.14042 04 40 30.63 +29 02 41.0 16.97R 718
0029P C2022 04 08.14125 04 40 30.69 +29 02 41.2 17.14R 718
0029P C2022 04 08.14208 04 40 30.74 +29 02 41.2 16.93R 718
0029P C2022 04 08.14292 04 40 30.79 +29 02 41.3 16.91R 718

0029P KC2022 04 09.81781 04 41 39.92 +29 02 44.3 16.93R C10 6.48″ (7.29″)
0029P KC2022 04 09.85269 04 41 41.32 +29 02 43.7 16.75R C10
0029P KC2022 04 09.87868 04 41 42.41 +29 02 44.8 16.91R C10

0029P KC2022 04 09.83998 04 41 40.75 +29 02 46.4 17.44R Z09 5.11″ (5.48″) R filter

0029P KC2022 04 09.89324 04 41 43.05 +29 02 43.9 17.28R I81 5.15″ (5.67″) R 3x120s
0029P KC2022 04 09.90174 04 41 43.46 +29 02 43.7 17.29R I81
0029P KC2022 04 09.91045 04 41 43.79 +29 02 43.9 17.23R I81
0029P KC2022 04 09.91889 04 41 44.15 +29 02 44.0 17.48R I81

0029P KC2022 04 10.20023 04 41 55.74 +29 02 44.9 17.09R 718 5.18″ (5.55″)

0029P KC2022 04 16.21149 04 46 13.36 +29 03 15.3 17.07R 718 5.18″ (5.55″)

**mini-outburst at 2022 04 17.02 +/-0.64 17.15R => 16.75R

0029P KC2022 04 17.83016 04 47 24.91 +29 03 28.1 16.77R L27 5.96″ (6.71″)
0029P KC2022 04 17.85090 04 47 25.82 +29 03 27.8 16.72R L27
0029P KC2022 04 17.87092 04 47 26.78 +29 03 28.2 16.67R L27

0029P C2022 04 18.13446 04 47 38.45 +29 03 30.3 16.82R 718 5.18″ (5.55″)
0029P C2022 04 18.13529 04 47 38.48 +29 03 30.3 16.70R 718
0029P KC2022 04 18.13612 04 47 38.51 +29 03 30.4 16.71R 718
0029P C2022 04 18.13613 04 47 38.52 +29 03 30.4 16.84R 718
0029P C2022 04 18.13696 04 47 38.56 +29 03 30.3 16.66R 718
0029P C2022 04 18.13779 04 47 38.61 +29 03 30.4 16.60R 718

0029P KC2022 04 18.90245 04 48 12.81 +29 03 36.6 16.70R I81 5.15″ (5.67″) R 3x120s
0029P KC2022 04 18.90666 04 48 13.07 +29 03 36.5 16.68R I81
0029P KC2022 04 18.91088 04 48 13.24 +29 03 36.3 16.67R I81
0029P KC2022 04 18.91510 04 48 13.41 +29 03 36.9 16.72R I81

0029P C2022 04 19.14267 04 48 23.59 +29 03 39.2 16.98R 718 5.18″ (5.55″) soft focus
0029P C2022 04 19.14267 04 48 23.62 +29 03 39.3 16.70R 718 5.92″ (6.29″) 8-pixel radius

0029P C2022 04 19.23463 04 48 27.60 +29 03 40.7 16.66R T03 5.70″ (5.90″) centroided
0029P C2022 04 19.23463 04 48 27.68 +29 03 41.0 16.90R T03 5.70″ (5.90″)

0029P KC2022 04 19.90842 04 48 58.08 +29 03 44.7 16.78R I81 5.15″ (5.67″) R 3x120s
0029P KC2022 04 19.91264 04 48 58.33 +29 03 45.4 16.81R I81
0029P KC2022 04 19.92116 04 48 58.69 +29 03 45.7 16.83R I81

0029P C2022 04 20.23350 04 49 12.62 +29 03 48.8 16.68R T03 5.70″ (5.90″)
0029P KC2022 04 20.23507 04 49 12.75 +29 03 49.2 16.71R T03
0029P C2022 04 20.23509 04 49 12.75 +29 03 49.1 17.00R T03
0029P C2022 04 20.23663 04 49 12.80 +29 03 49.2 16.63R T03

0029P C2022 04 21.13766 04 49 53.71 +29 03 56.9 16.90R 718 5.18″ (5.55″)
0029P C2022 04 21.13849 04 49 53.80 +29 03 57.9 16.75R 718
0029P KC2022 04 21.13932 04 49 53.80 +29 03 57.7 16.92R 718
0029P C2022 04 21.13932 04 49 53.79 +29 03 57.1 16.98R 718
0029P C2022 04 21.14015 04 49 53.84 +29 03 57.7 16.70R 718
0029P C2022 04 21.14099 04 49 53.87 +29 03 57.6 17.19R 718

0029P KC2022 04 21.85030 04 50 26.42 +29 04 05.2 16.74R K60 5.88″ (6.30″) *bias correction +0.2 mag
0029P KC2022 04 21.85943 04 50 26.84 +29 04 04.8 16.66R K60
0029P KC2022 04 21.87115 04 50 27.40 +29 04 04.3 16.64R K60

0029P KC2022 04 21.90956 04 50 29.04 +29 04 05.1 17.01R I81 5.15″ (5.67″) R 3x120s
0029P KC2022 04 21.91377 04 50 29.25 +29 04 05.2 16.97R I81
0029P KC2022 04 21.91799 04 50 29.47 +29 04 05.1 16.91R I81
0029P KC2022 04 21.92220 04 50 29.65 +29 04 05.4 17.03R I81

0029P C2022 04 24.86543 16.94R 970 5.40″ (5.94″) +/-0.15
0029P C2022 04 24.86954 17.22R 970

0029P C2022 04 25.14095 04 52 58.49 +29 04 42.6 16.90R 718 5.18″ (5.55″)
0029P C2022 04 25.14179 04 52 58.51 +29 04 40.8 16.93R 718
0029P KC2022 04 25.14301 04 52 58.57 +29 04 41.1 16.91R 718
0029P C2022 04 25.14262 04 52 58.51 +29 04 41.7 16.72R 718
0029P C2022 04 25.14429 04 52 58.58 +29 04 41.1 17.04R 718
0029P C2022 04 25.14543 04 52 58.71 +29 04 40.8 16.96R 718

0029P KC2022 04 26.82983 04 54 17.81 +29 05 01.2 16.71R L27 5.96″ (6.71″)
0029P KC2022 04 26.84909 04 54 18.78 +29 05 02.7 16.79R L27
0029P KC2022 04 26.87057 04 54 19.70 +29 05 01.9 16.92R L27

0029P KC2022 04 26.90708 04 54 21.52 +29 05 01.3 16.97R I81 5.15″ (5.67″) R 6/9x120s
0029P KC2022 04 26.91562 04 54 21.94 +29 05 02.3 17.01R I81
0029P KC2022 04 26.93088 04 54 22.67 +29 05 02.4 17.05R I81

0029P KC2022 04 28.84514 04 55 53.60 +29 05 26.7 16.78R L27 5.96″ (6.71″)
0029P KC2022 04 28.86366 04 55 54.46 +29 05 27.2 16.96R L27
0029P KC2022 04 28.87922 04 55 55.17 +29 05 26.0 16.78R L27

0029P KC2022 04 29.84556 04 56 41.56 +29 05 40.8 16.86R C10 6.48″ (7.29″)
0029P KC2022 04 29.86188 04 56 42.31 +29 05 40.4 17.05R C10

0029P C2022 04 29.87411 04 56 42.85 +29 05 40.6 17.30 R G40 5.08″ (5.71″) 0.43-m N. Paul
0029P C2022 04 29.88116 04 56 43.23 +29 05 40.5 17.29 R G40

0029P KC2022 04 29.92030 04 56 45.18 +29 05 40.6 17.36R I81 5.15″ (5.67″) R 6x120s
0029P KC2022 04 29.92819 04 56 45.56 +29 05 40.9 17.46R I81 6x120s
0029P KC2022 04 29.92881 04 56 45.61 +29 05 39.8 17.09R I81 5x120s
0029P KC2022 04 29.93692 04 56 45.95 +29 05 41.6 17.32R I81 17x120s

0029P KC2022 04 30.14694 04 56 55.99 +29 05 44.0 17.20R 718 5.18″ (5.55″)

0029P KC2022 04 30.83720 04 57 29.33 +29 05 53.9 16.80R L27 5.96″ (6.71″)
0029P KC2022 04 30.85491 04 57 30.19 +29 05 54.1 17.05R L27
0029P KC2022 04 30.87262 04 57 30.98 +29 05 54.2 16.66R L27

0029P C2022 05 05.14980 05 00 59.72 +29 06 52.9 16.93R 718 5.18″ (5.55″) 10x60s

0029P C2022 05 18.16331 05 11 58.67 +29 10 02.1 16.72R 718 6.76″ (7.13″) 20x30s +/-0.3mag 9deg altitude

0029P KC2022 05 19.85671 05 13 26.87 +29 10 25.4 16.46R L27 5.96″ (6.71″) 28x20s mag 19 field star in aperture
0029P KC2022 05 19.85866 05 13 26.85 +29 10 26.6 16.37R L27

0029P C2022 05 21.16238 05 14 34.56 +29 10 43.0 16.79R 718 6.76″ (7.13″) 20x30s 7deg altitude 21deg elongation

0029P C2022 05 25.16762 05 18 04.57 +29 11 35.5 >16.14R 718 7.40″ (7.77″) 18x20s 5deg altitude 18deg elongation
0029P C2022 05 25.16762 05 18 04.74 +29 11 35.5 >15.53R 718 5.92″ (6.29″) NOT DETECTED >16.0R

—– end —–

List of Observers:

List of Observatory Codes / Observers / Instruments / Photometric aperture in arcsec

N.B. This is a comprehensive list of observatories/people whose work has contributed to the current Observing Campaign, which began in 2014 February.

203 G. Galli, S. Foglia Italy 0.36-m f/5.76 Schmidt-Cassegrain 5.5
204 L. Buzzi, A. Aletti Italy 0.36-m f/6.5 reflector 4.8/6.0; Italy 0.84-m f/3.5 reflector 5.6
213 R. Naves, M. Campas Spain 0.30-m f/10 Schmidt-Cassegrain 10.0 square; Spain 0.30-m f/9 Schmidt-Cassegrain 5.4
323 P. Camilleri, J. Oey, R. Miles Australia 0.40-m f/5 reflector (Perth)
718 P. Wiggins Utah, USA 0.35-m f/7 Schmidt-Cassegrain 5.2
970 N. James England 0.28-m f/10 Schmidt-Cassegrain 5.2/5.8 check
A06 E. Cortes Spain 0.25-m f/3.6 Schmidt-Cassegrain 10.0 square
B74 J. M. Bosch Spain 0.40-m f/10 Schmidt-Cassegrain 10.0 square
B96 E. Bryssinck Belgium 0.4-m f/3.8 Astrograph 5.0
C10 J.-F. Soulier France 0.30-m f/3.8 Newtonian 6.5, 4.9
C35 J. Aledo Spain 0.4-m f/3.4 Reflector 10.0 square

C42 Q. Ye (Zwicky Transient Facility) Xingming, China 0.50-m ?

C77 A. Mantero Italy 0.25-m f/4 Reflector 6.7
D09 P.-J. Dekelver Belgium, 0.30-m f/4 Newtonian 4.84″ 4-pix

C90 L. Tremosa Spain 0.30-m f/5 reflector 10.0 square

E94 J. Drummond N.Zealand 0.35-m f/10 Schmidt-Cassegrain 5.9; 0.41-m f/5.2 Newtonian 7.2; 0.41-m f/4.5 Newtonian 6.0
G40 J. Tuten, N. Paul Slooh Canary Isles 0.43-m f/6.8 Dall-Kirkham 5.0
H06 N. James New Mexico 0.43-m f/4.5 5.8; A. Watkins New Mexico 0.43-m f/4.5 5.8; M. Mobberley 0.50-m T11, P. Manteca 0.50-m T11, E. Herman T11

I41 Q. Ye (Zwicky Transient Facility) Palomar, USA 1.20-m f/2.5

I64 A. Jones England 0.19-m f/5.2 Maksutov-Newtonian + Rc filter 5.6
I81 D. Buczynski Scotland 0.35-m f/6 Schmidt-Cassegrain 5.2
I88 J. Carrillo Spain 0.36-m f/5 reflector 10.0 square
J01 J. Gonzalez Spain 0.15-m f/6 Ritchey-Chretien 10.0 square
J22 K. Hills La Palma 0.50-m f/2.9 astrograph 5.9, 10.0 square
J24 J. F. Hernandez Spain 0.4-m f/10 Schmidt-Cassegrain 10.0 square
J38 F. Garcia Spain 0.25-m f/8.1 Ritchey-Chretien 10.0 square
J47 G. Muler Lanzarote 0.30-m Schmdt-Cassegrain 6.1

J69 D. Briggs England 0.30-m f/5.4 Newtonian 6.5
J77 R. Miles England 0.35-m f/8 Schmidt-Cassegrain + r’ 5.4 also V, B, Clear
K01 A. Watkins England 0.35-m f/7.7 Schmidt-Cassegrain 6.2
K02 P. Carson England 0.32-m f/5.4 Dall-Kirkham 5.5/6.5
K14 M. Morales Spain 0.25-m f/5 Newtonian 5.7, 10.0 square
K60 J. Warell, Sweden 0.25-m f/6.1 SCT 5.88 6.30

L27 J.-F. Soulier France 0.25-m f/4 Newtonian reflector 6.0 (6.7)
Q38 M. Mattiazzo Australia 0.28-m f/6.3 Schmidt-Cassegrain 5.5
Q67 P. Camilleri, J. Oey, R. Miles Australia 0.32-m F/8.8 RCOS 5.5
Q68 P. Camilleri, J. Oey, H. Williams Australia 0.30-m f/3.0 reflector 7.4; P. Camilleri, J. Oey Australia 0.34-m f/5.9 SCT
W88 K. Breedlove, J. Tuten, A. Hale Chile 0.35-m f/11 Schmidt-Cassegrain (Slooh) ???
W96 J.-F.Soulier, A.Maury, J.-B. de Vanssay Chile 0.4-m f/5.2 Ritchey-Chretien 6.4
Z08 E. Bryssinck, Oria, Spain 0.70-m f/6 reflector (remote) 5.2 r’

Z09 W. Hawley, England 0.25-m f/10 Schmidt-Cassegrain 5.5

Z08 J. Warell SAAF, Oria, Spain, 0.43-m f/6.8 CDK

Z08 E. Bryssinck, Oria, Spain, 0.7-m f/8 Ritchey-Chretien 

Z10 P. Carson, Spain 0.32-m f/5.4 Dall-Kirkham 5.5
Z30 D. Storey, England 0.35-m Ritchey-Chretien 5.9
Z39 A. Acosta, Lanzarote 0.23-m Schmidt-Cassegrain 10.0 square
Z42 J. Savage, England 0.35-m f/7.7 Schmidt-Cassegrain + V 5.5, 7.9
Z74 F. Soldan, Spain 0.20-m f/6.7 Schmidt-Cassegrain 10.0 square

Z80 G. Wells, D. Bamberger, England 0.25-m f/8 Ritchey-Chretien 6.7

Z85 T. Angel, Spain 0.35-m f/11 Schmidt-Cassegrain 5.6

Z92 A. Pratt, England 0.28-m f/3.3 Schmidt-Cassegrain 5.25

XXX C.S. Morris, California, USA 0.406-m f/6.8 Schmidt-Cassegrain 4.84

XXX T. Haymes, England 0.28-m f/5.5 Schmidt-Cassegrain 5.6
XXX R. Sargent, England 0.35-m f/7 Schmidt-Cassegrain 5.04 6-pix

Las Cumbres Observatory / Faulkes Telescope Project (R. Miles, A. Hale):

A major contribution to this ’24/7′ comet monitoring activity have been the observations from the Las Cumbres Observatoryglobal network of telescopes. Access to this network has been made available thanks to the Dill Faulkes Education Trust, and to Dr Paul Roche of the Faulkes Telescope Project based at Cardiff University, Wales assisted by Alison Tripp.

E10 coj 2m0a Siding Spring-FT South 2.0-m f/10 Ritchey-Chretien 5.4
F65 ogg 2m0a Haleakala-FT North 2.0-m f/10 Ritchey-Chretien 5.4

K91 cpt Sutherland A S. Africa 1.0-m f/8 Ritchey-Chretien 5.5
K92 cpt Sutherland B S. Africa 1.0-m f/8 Ritchey-Chretien 5.5
K93 cpt Sutherland C S. Africa 1.0-m f/8 Ritchey-Chretien 5.5

Q63 coj Siding Spring A Australia 1.0-m f/8 Ritchey-Chretien 5.5

Q64 coj Siding Spring B Australia 1.0-m f/8 Ritchey-Chretien 5.5
V37 elp McDonald Observatory A Texas, USA

Latest rotational phase plot showing all outbursts since 2002 August:

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