[AZ-Observing] Forward-scattering event on C/2006 P1 (McNaught)
- From: Brian Skiff <bas@xxxxxxxxxx>
- To: az-observing@xxxxxxxxxxxxx
- Date: Fri, 12 Jan 2007 00:36:35 -0700 (MST)
Excerpt from IAU Circular 8793 issued this evening:
J. N. Marcus writes that forward-scattering brightness
enhancement should peak in C/2006 P1, as viewed from the earth, on
Jan. 14 at a level approximately 2.3 magnitudes brighter than what
would be predicted by a standard power law (model details in Marcus
2007, ICQ, submitted).
This Circular also quotes a number of fairly experienced comet
observers in re the total magnitude, which indicate that values
around -3 are typical near Jan 11.0 - 11.5 UT. Since this isn't
_so_ much fainter than Venus, it is certainly time to try looking
for it at midday in much the same way one would observe Venus---
and of course itself is conveniently in the sky, too, at midday.
\Brian
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