Observation by Alex Pratt: (1640) Nemo occults TYC 2417-01016-1

Uploaded by

Alex Pratt

Observer

Alex Pratt

Observed

2024 Dec 22 - 22:27

Uploaded

2024 Dec 28 - 16:00

Objects

1640 Nemo

Equipment

C11 f/10 and f/3.3 focal reducer
QHY174M-GPS camera
SharpCap Pro (recording)
Tangra and AOTA (reduction)

Exposure

0.050 s exposures

Location

Z92 - Leeds, West Yorkshire (Bortle 7)

Target name

(1640) Nemo occults TYC 2417-01016-1

Title

(1640) Nemo occults TYC 2417-01016-1

About this image

Another rare, clear evening gave me the opportunity to monitor this event - the mag. 15.8 Mars-crossing asteroid (1640) Nemo, 7 km in diameter, was predicted to occult a mag. 11.3 star in Auriga for up to 0.7 seconds. I was less than 1 km from the predicted centreline and recorded a dip of 0.35 seconds.

The resultant timings:

Event time in UTC

D: 22 27 4.98 ± 0.03

R: 22 27 5.33 ± 0.03

Instead of displaying its light curve, the animated GIF shows the brief event (left of centre). The cold wind was gusting to 40 km/hr, so I closed the roll-off-roof as much as I could to shelter the telescope.

The MPC citation for (1640) Nemo reads:

"Named for the fictional builder of advanced technology in the novel by Jules Verne, 'Twenty Thousand Leagues under the Sea'. Name proposed by J. Meeus."

Files associated with this observation

(1640) Nemo_20241222_222705_ARP.gif (1.6 MB)

Like this image

Jeremy Shears, Oliver Hext, Steve Knight, Graham Winstanley, Geof Lewis, Honor Wheeler, Nick Quinn

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