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Asteroid 3122 Florence fly-by

Posted: Fri Sep 01, 2017 3:18 pm
by rwilkinson
This shouldn't be too difficult to observe or image with a small telescope:
http://www.skyandtelescope.com/press-re ... -florence/

Re: Asteroid 3122 Florence fly-by

Posted: Sat Sep 02, 2017 7:12 am
by rwilkinson
I managed to track it over the course of 40 minutes, until it completely clouded over:
florence.gif
3122 Florence on 1-Sep. 29x 60-sec with HX916 on 80ED at f/4.6.
florence.gif (5.22 MiB) Viewed 2641 times
It was moving so quickly that it was trailing significanly even over my 1-minute exposures - I'd have been better using 15 or even 10-sec!

Re: Asteroid 3122 Florence fly-by

Posted: Mon Sep 04, 2017 10:14 am
by PMiskiw
It looks as though it's rotating Ross.

Re: Asteroid 3122 Florence fly-by

Posted: Mon Sep 04, 2017 10:33 am
by rwilkinson
PMiskiw wrote:It looks as though it's rotating Ross.
No Peter, what's happening is that the target is moving significantly during my 1-min exposures, and combined with the periodic tracking errors of my RA drive over this interval gives its progress a jerky appearance.
In fact its rotation period has been measured at just under 2.4 hours.