Asteroid Florence (3122) Two Nights from Close Approach to Earth

Mike Olason
Location of photo
Denver Colorado
Date/Time of photo
30 August 2017, 0510UT
11" SCT f/6.4, 1" Refractor f/4, STF-8300M and ST-402ME CCD Cameras
Asteroid Florence is only 2 nights from it's close approach to Earth at 3AM MDT September 1. In these images the asteroid is magnitude 9 and about 4.6 million miles from Earth. The 7 different images try to show the asteroid in different ways. The asteroid was moving about 1/3 degree per hour across the night sky.
All comments must follow the Sky & Telescope Terms of Use and will be moderated prior to posting. Please be civil in your comments. Sky & Telescope reserves the right to use the comments we receive, in whole or in part, and to use the commenter’s username, in any medium. See also the Terms of Use and Privacy Policy.