Observation by Tim Haymes: Small asteroid occults 9th mag star.

Uploaded by

Tim Haymes

Observer

Tim Haymes

Observed

2026 Jan 10 - 21:23

Uploaded

2026 Feb 03 - 11:27

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Constellation

Grus

Field centre

RA: 22^h26^m
Dec: -45°56'
Position angle: -2°03'

Field size

0°07' × 0°02'

Equipment

C11 xlt at F5.8
QHY174mGPS
Sharp Cap

Exposure

0.05s, video at 20fps

Location

Steeple Aston

Target name

(77671) 2001 MD13

Title

Small asteroid occults 9th mag star.

About this image

This 18th mag asteroid (Diam 8km +/-1) occulted TYC 1367-01864-01 (Vmag 9.0) for 0.6sec duration. I had just attended a meeting of my local AS in Abingdon and was returning home. I encountered a detour on the journey which gave me only 10min to point the telescope, get a GPS lock and start recording. A compressed video is at the link. The blue line is the occulted star with drop. The other lines (yellow-green) are comparison stars in the same field of view used as checks on seeing conditions. The event is reported to the European Data Base SODIS.

Event time in UTC
   D: 21 23  0.33 ± 0.04
   R: 21 23  0.89 ± 0.03

https://www.stargazer.me.uk/asteroids/(77671)2001MD13%20and%20mag9.mp4

Files associated with this observation

(77671)_Tangra.PNG (220.9 kB)

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