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31P/Schwassmann-Wachmann

Perihelion distance : 3.41 AU
Inclination to ecliptic : 5 °
Orbital period : 8.69 years
Eccentricity : 0.19

NASA/JPL elements
IAU/MPC elements


On 2017 Aug 17 06h42 UT by Jean-Gabriel Bosch


(Copyright Jean-Gabriel Bosch)

Magnitude (MPC m2)20.6
Magnitude standard deviation0.2
Aperture radius for m26.4 "
r (dist/Sun) 4.226 AU
d (dist/Earth) 3.973 AU
Right ascension45.47508 °
Declination+12.19106 °
MPC report
COD W96
CON Jean-Gabriel Bosch [JGBosch@free.fr]
OBS A. Maury, J.-B. de Vanssay, J.-G. Bosch
MEA J.-G.Bosch
TEL 0.4-m f/5.4 Ritchey-Chretien + QHY9CCD
ACK MPCReport file updated 2017.08.17 07:29:35
AC2 JGBosch@free.fr
NET UCAC-4
0031P        KC2017 08 17.27897 03 01 54.02 +12 11 27.8          20.8 N      W96
0031P        KC2017 08 17.31027 03 01 54.66 +12 11 30.1          20.4 N      W96
Instrument typeRitchey-Chretien
Instrument aperture (0=naked eye)400 mm
Instrument focale length2160 mm
Instrument focale/diameter5.4
FilterNone
CameraQHY
SensorCCD
Sensor temperature-30 °C
Binning3x3
MountVMA 200
AutoguideNo
Picture exposure details89x60s
Air mass1.5
Observatory MPC codeW96
LocationSan Pedro Atacama Chili
Reference stars catalog (ast)UCAC-4
Used softwaresASTROMETRICA
Resulting picture sampling (scale)1.59 "/pix
Observation submission date2017 Aug 20 11h00m47s
Observation modification date2017 Aug 20 11h01m58s

(Record n° 18084)

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