73P/Schwassmann-Wachmann (Record n° 17128)
Orbital period : 5.44 years
NASA/JPL elements
IAU/MPC elements
On 2017 Feb 11 08h18 UT by Thierry Noel
(Copyright Thierry Noel)Nuclear magnitude (m2) 14.7 m2 standard deviation 0.1 Aperture radius used for m2 6.5 " r (dist/Sun) 1.085 AU d (dist/Earth) 1.406 AU Right ascension 18 10 21.07 h m s Declination -20 10 06.6 ° ' " MPC report COD W97
CON Thierry Noel [thierrynoel38a@free.fr]
OBS A. Maury, B. Sandness, T. Noel
MEA T. Noel
TEL 0.38-m f/4.6 Newton + CCD
COM 73P=original comet (with tail)
COM 73Pa=fragment (without tail but still with same motion as 73P)
ACK MPCReport file updated 2017.02.11 14:00:13
AC2 thierrynoel38a@free.fr
NET Gaia DR1
0073P C2017 02 11.34595 18 10 21.07 -20 10 06.6 14.6 N W97
0073P C2017 02 11.35780 18 10 24.77 -20 10 12.8 14.8 N W97
Instrument type Newton Instrument aperture (0=naked eye) 380 mm Instrument focale length 1748 mm Instrument focale/diameter 4.6 Filter(s) None Camera ST11000 Sensor CCD Sensor temperature -25 °C Binning 1x1 Mount Nova Autoguide No Exposure details 8x30s Observatory MPC code W97 Location San Pedro de Atacama, Chile Reference stars catalog Gaia DR1
Used softwares ASTROMETRICA Resulting picture sampling (scale) 1.09 "/pix Image processing Prism (-dark, /flat), Astrometrica (add), Iris (levels, ddp, crop) Remarks or comments 73Pbt = fragment outburst (brighter than 73P) !
Tracking adjusted on 73P movement. Observation submission date 2017 Feb 11 14h04m27s Observation modification date 2017 Apr 16 20h25m29s