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[AZ-Observing] Re: Very NEO
- From: Brian Skiff <Brian.Skiff@xxxxxxxxxx>
- To: az-observing@xxxxxxxxxxxxx
- Date: Wed, 1 Oct 2003 19:48:08 -0700 (MST)
>> ...the day of closest approach the magnitude shot up from 36 to 17.7!
>> Any Ideas?
Yes, this happened because the phase changed dramatically, so that
the illumination went from "thin crescent" to "Full" (near opposition)
in the time you mention. So just as with the Moon, the brightness
varied greatly even though the distance didn't change very much.
\Brian
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