46P/Wirtanen 2007-Dec-17 Charles Bell

46P/Wirtanen
2007-Dec-17 00:41:21 UTC
Exposure 306 seconds
Stacked with Astrometrica
Observation data image
Sky motion 1.63 "/min P.A. 52.2 deg
Magnitude 16.4 R aperture radius 5.52 arc sec (UCAC4)
Coma 16" x 11" extended PA 62 deg
Tail 0.5 arc minutes PA 031 deg
Charles Bell H47 Vicksburg
0.3-m Schmidt-Cassegrain + SBIG ST8-CCD
Annotated with Photoshop

Ephemeris data:
t - T = -47.46597 days
Delta = 1.061 AU
r = 1.231 AU
El