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Video astrometry of comet 21P/Giacobini-Zinner

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About this observation
Observer
Alex Pratt
Time of observation
21/06/2018 - 23:25
Object
Comet 21P/Giacobini-Zinner
Observing location
Z92
Equipment
C11 f/10 @ f/3.3
Watec 910 video camera
IOTA-VTI GPS time inserter
OccuRec
Tangra
Exposure
0.64s
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Cygnus is now riding high at local midnight so the comet was at a favourable altitude of 50 degrees. The following astrometric measures were submitted to the MPC

0021P C2018 06 21.95868 21 07 38.76 +44 56 06.8 13.1 N

0021P C2018 06 21.96913 21 07 40.12 +44 56 28.9 13.1 N

0021P C2018 06 21.97608 21 07 40.95 +44 56 43.3 13.2 N

Comparing these with the MPC Ephemeris gave provisional O-Cs of around (2, -1.3) arcsec.

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