200P/Larsen (0200P)


Type: Periodic Perihelion date: 29 July 2019 Perihelion distance (q): 3.3 Aphelion distance (Q) : 6.6 Period (years): 11.0 Eccentricity (e): 0.33 Inclination (i): 12.1 JPL orbit diagram COBS lightcurve Jeff Larson (Lunar and Planetary Laboratory) discovered this comet on CCD images obtained with the 0.91-m Spacewatch telescope on 3 November 1997. The total magnitude was 16.6-16.7, while the coma was 14 arcsec across and contained a nuclear condensation of magnitude 19.2- 19.7. There was a tail extending 0.89 arcmin toward PA 258°. The first confirmation came from M. Tichy and Z. Moravec (Klet Observatory) when they detected the comet with the 0.57-m f/5.2 reflector and a CCD also on 3 November. Following the comet's recovery in 2008, K. Kinoshita integrated the comet's motion backwards and noted it was diverted into its present orbit just two years prior to its discovery because of a close approach to Jupiter. The approach occurred on 9 February 1995, when it passed 0.35 AU from the giant planet. The result was a decrease in the period from 13.56 to 10.95 years and a decrease in the perihelion distance from 3.95 AU to 3.29 AU. Observations (VEMag = visual equivalent magnitude) Date 10x10 mag Error VEmag Coma ' 01-Sep-19 20.29 0.07 20.0 0.2 01-Oct-19 20.02 0.13 19.7 0.2 21-Oct-19 20.21 0.12 20.1 0.2