21P/Giacobini-Zinner 2018-Jun-16 Charles Bell

21P/Giacobini-Zinner
2018-Jun-16 07:54:53 UTC
Sky motion 1.67 "/min P.A. 031.1
Stack 15 x 87 secs (total 1305 secs)
Magnitude 14.5 R aperture radius 8.2 arc sec (UCAC4)
Coma 64" x 40" extended 240 deg
Tail 4.0 arc min PA 245 deg
Charles Bell H47 Vicksburg
0.3-m Schmidt-Cassegrain + CCD + R filter
Cropped slightly, ArcSinh stretch applied

Ephemeris data:
t - T = -85.94523 days
Delta = 0.989 AU
r = 1.540 AU
El

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