Date: 06 Oct 2006 22:19:58
From: canopus56
Subject: 99942 Apophis (2004 MN4) 2036-2037 - apparent brightness
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When asteriod Apophis makes its passage between the Earth and the Moon
are there any rough estimates of what its apparent brightness will be?
(Please, no obvious jokes about how if it impacts, it will be really
bright. -:) )
The NASA NOE search page lists A99942 with a standard H magnitude of
19, passing on 2036-04-13.37 at 0.53 Earth radi at 3,420 kilometers.
http://neo.jpl.nasa.gov/risk/a99942.html.
Similarly, the NASA NOE search page for 2006 TC1 lists the object with
a standard H of 19.6, passing on 2015-02-13.26 at 0.12 earth radii or
about 770 kilometers.
http://neo.jpl.nasa.gov/risk/2006tc1.html
in
http://neo.jpl.nasa.gov/risk/
Assuming that they will pass on the night-side of the Earth, what will
the apparent brightness of these objects likely be?
- Canopus56
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