RE: (meteorobs) Fireball Magnitudes

• To: meteorobs@latrade.com
• Subject: RE: (meteorobs) Fireball Magnitudes
• From: Stop Light Pollution! <GLIBA@grossc.gsfc.nasa.gov>
• Date: Fri, 6 Dec 1996 9:34:24 -0500 (EST)
• Reply-To: meteorobs@latrade.com
• Sender: owner-meteorobs

Oops, that one got away from me. As I was saying:

  As someone stated here a while back, many inexperianced observers will
overestimate the brightness of a fireball. This is understandable, but
it really isn't easy to estimate if it is brighter than -5 or so because
there isn't much to compare it to. If the Moon isn't up, all you can do
is estimate from the memory of the Moon's brightness. The Full Moon is
-12, but the Half Moon depends on which half I believe.

  My question is, if the Waxing Half Moon is about -10, is the Waning Half
Moon -9? Because of the distribution of the Lunar Mare, the Waning Half
Moon is somewhat fainter than than the waxing half moon.

GWG

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