Observation by Tim Haymes: (54598) Bienor to occult a m16 star.

Uploaded by

Tim Haymes

Observer

Tim Haymes

Observed

2023 Feb 14 - 00:00

Uploaded

2023 Feb 14 - 16:44

Objects

54598 Bienor

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Constellation

Auriga

Field centre

RA: 05^h54^m
Dec: +43°14'
Position angle: +4°23'

Field size

0°24' × 0°15'

Equipment

C11 at F5.8
QHY174mGPS

Exposure

58 x 30s subs

Location

N. Oxfordshire

Target name

(54598) Bienor and 1B 1332-191103

Title

(54598) Bienor to occult a m16 star.

About this image

Images were taken 1hr 30min before Bienor occulted 1B 1332-191103 (Bienor is indicated with white marker lines on the negative image inset, and "1B" is the nearest star to lower right.). Bienor is a Centeur of diameter 188Km and orbits near Uranus. This star is magnitude 16.4, and Bienor m19.

The image is a stack of 58 x 30s exposures, and in that time Bienor moved 4.5 arcsec. The motion can just be seen on the image which has a plate scale of 0.75 arcsec/pix

I didn,t record the occultation because of thick fog (it clouded over a bit), but at least two observers did succeed - one in the UK and one in Europe. Congrats to them. The occultation prediction was provided by the ERC Lucky-Star project.

https://lesia.obspm.fr/lucky-star/index.php

The star image was measured at RA 05 54 29.1 +43 13 29.5 (J2000). It was an unusual opportunity for the UK. An exposure of 2-3 sec/frame was needed to video the star over a 2 min period.

Files associated with this observation

60x30s stack_overlay_lab.jpg (242.7 kB)

Like this image

Simon Kidd, Dr Paul Leyland, Mike Harlow, David Basey

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