Fast rotating near-Earth asteroid 2022 AB
Taken by Filipp Romanov on January 11, 2022 @
Remotely at Abbey Ridge Observatory, Canada
Click photo for larger image
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Details:
Fast rotating near-Earth asteroid 2022 AB was first observed at GINOP-KHK, Piszkesteto (K88), by K. Sarneczky. The asteroid passed 9.6 LD from the Earth on January 20th, 2022, at 13:21 UT. I observed 2022 AB remotely using 0.355-m f/6.2 Schmidt-Cassegrain telescope of Abbey Ridge Observatory, Canada (I22), as part of the observing campaign https://groups.io/g/mpml/topic/observing_campaign_for_2022/88247083 for 2022 AB. Unfiltered photos were taken over several nights in January 2022, with exposure times of 18 and 10 seconds for each image. For the first time (previously I only did phase plots of variable stars, including discovered by me) I plotted the rotation phased light curve of asteroid. I made photometric measurements (in MaxIm DL software) of asteroid in comparison to V magnitudes (from the APASS DR9 catalog) of nearby stars from 590 images taken on 2022-01-11 (from 02:08:55 to 09:30:48 UT). I am attaching the phase plot created in VStar software for the best (which is searched using VStar) period = 0.002105 days = 181.87 seconds.
Photographer's website:
https://twitter.com/romanov_filipp/status/1484175476788629510
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