31P/Schwassmann-Wachmann (Record n° 18656)
Orbital period : 8.72 years
NASA/JPL elements
IAU/MPC elements
On 2017 Dec 19 20h49 UT by Jean-Francois Soulier
(Copyright Jean-Francois Soulier)Nuclear magnitude (m2) 19.9 m2 standard deviation 0.2 Aperture radius used for m2 6.6 " r (dist/Sun) 4.023 AU d (dist/Earth) 3.328 AU Right ascension 02 22 46.17 h m s Declination +08 52 27.6 ° ' " MPC report COD A77
CON JEAN-FRANCOIS SOULIER [jean-francois.soulier2@wanadoo.fr]
OBS J.-F. Soulier
MEA J.-F. Soulier
TEL 0.20-m f/4 Newtonian reflector + CCD
ACK MPCReport file updated 2017.12.19
AC2 jean-francois.soulier2@wanadoo.fr
NET UCAC-4
0031P KC2017 12 19.86718 02 22 46.17 +08 52 27.6 19.7 N A77
0031P KC2017 12 19.88528 02 22 45.93 +08 52 28.2 20.0 N A77
Instrument type Newton Instrument aperture (0=naked eye) 200 mm Instrument focale length 800 mm Instrument focale/diameter 4 Filter(s) None Camera ATIK 314L+ Sensor CCD Sensor temperature -20 °C Binning 1x1 Mount Astronomy Equipment AEb Autoguide No Exposure details 50 x 60s Observatory MPC code A77 Location Dauban (04) Reference stars catalog UCAC-4
Used softwares ASTROMETRICA Resulting picture sampling (scale) 1.65 "/pix Observation submission date 2017 Dec 20 00h43m22s Observation modification date 2017 Dec 21 01h31m35s