2017e3 20180421 cbell

C/2017 E3 (PANSTARRS)
2018-Apr-21 08:35:46 UTC
Stack 6 x 344 secs
Sky motion 0.44 "/min P.A. 320.3 deg
Magnitude 17.7 R aperture radius 10.25 arc sec (UCAC4)
Coma diameter 19 arc sec
Tail 0.5 arc min PA 220 deg
Charles Bell H47 Vicksburg

0.3-m Schmidt-Cassegrain + CCD + R filter
Ephemeris data:
t - T = +318.45494 days
Delta = 5.358 AU
r = 6.339 AU
Elongation = 166.3 deg
Phase = 2.2 deg
PsAng = 269.5 deg
PsAMV = 216.0 deg
plAng = 1.8 deg
Constellation: Libra (Lib)