2022 January 05 - successful observation of the asteroid occultation event at Hokoon, with Power Wong and Kenneith Hui.
Asteroid : (57) Mnemosyne
Magnitude: 12.83
Star: TYC 5237-00287-1 (RA: 22h 41m 57.7248s, Dec: -02d 50m 04.181s)
Magnitude: 8.7
Telescope : 0.5 m RC reflector at Hokkon, f/8
Camera : ASI1600MM Pro, cooled to -18C
Exposure for timing : 100 ms
Cropped 1200x1200
binning : 3x3
The first photo shows the star field around TYC 5237-00287-1, with the following key (magnitude in bracket):
A - TYC 5237-00287-1 (9.30)
B - (57) Mnemosyne (12.
C - GSC 5237:353 (13.0)
D - GSC 5237:167 (13.2)
E - PGC 69531 (14.9)
F - UCAC 2.0 Star (14.0)
G - GSC 5237:32 (15.6)
H - GSC 5237:124 (15.0)
The next 4 images show the asteroid approaching the target star.
Result:
Time of disappearance of star : 12:55:16:197 UTC
Time of re-appearance of star : 12:55:19:297 UTC
Duration of occultation : 3.10 s
Estimate of error : +/- 0.1 s
2022 January 05 - successful observation of the asteroid occultation event at Hokoon
2022 January 05 - successful observation of the asteroid occultation event at Hokoon
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Re: 2022 January 05 - successful observation of the asteroid occultation event at Hokoon
Data reduction done by NAO, Japan
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