Comets - 209P/LINEAR - 0209P
Type Periodic Perihelion Date 12 June 2019 Perihelion Distance (q) 1.0 Aphelion Distance (Q) 5.0 Period (Years)   5.1 Eccentricity (e)   0.67 Inclination (i)   21.3 Click for NASA orbit diagram
Hills Observatory: 1 January 2013 to 8 October 2018
COMETS COMETS
DEEP SKY DEEP SKY
This comet was discovered by the Lincoln Laboratory Near-Earth Asteroid Research (LINEAR) project (New Mexico, USA) on five images acquired during 3 February 2004. The images were obtained using a 1.0-m reflector and a CCD camera, but revealed no coma, prompting the Central Bureau for Astronomical Telegrams to consider it as a minor planet and give it the preliminary minor planet designation 2004 CB. The magnitude was given as 17.8-18.2. The "minor planet" was confirmed by S. Sposetti (Gnosca, Switzerland) on three images acquired using his 40-cm reflector and a CCD camera on 4 February. Numerous observations were acquired during the next few weeks, but R. H. McNaught (Siding Spring Observatory, Australia) made a discovery on 30 March. His CCD images using a 1.0-m reflector revealed a narrow tail extending 1.1' in PA 274°. The magnitude was given as 16.7- 17.0. The tail was confirmed by M. Kocer (Klet Observatory, Czech Republic) on 31 March, when CCD images revealed a tail extending about 90" in about PA 280°. Prediscovery images of the comet, dating back to 3 December 2003, were found during 2009. These were additional survey images acquired by LINEAR, with the comet's magnitude then given as 19.0-19.7. The comet was recovered by G. Hug (Scranton, Kansas, USA) using a 56-cm reflector and a CCD camera. The comet appeared on several images he had acquired on 4 and 5 December 2008. The nuclear magnitude was within the range of 19.3-19.7. Date 10x10 mag Error Kphot mag Coma ' 24 May 14 13.71 0.14 13.4 0.2 29 May 14 12.81 0.04 12.3 0.3 2 Jun 14 12.46 0.03 12.0 0.4 4 Jun 14 13.31 0.08 12.8 0.2 5 Jun 14 13.34 0.06 13.3 0.2 6 Jun 14 13.26 0.05 12.7 0.2 8 Jun 14 13.35 0.10 13.2 0.2 9 Jun 14 14.36 0.09 14.3 0.2 10 Jun 14 14.22 0.02 13.2 0.2 12 Jun 14 14.05 0.04 13.9 0.2 14 Jun 14 14.42 0.07 14.3 0.2 19 Jun 14 15.46 0.02 15.4 0.2 26 Jun 14 15.52 0.02 15.4 0.2 28 Jun 14 15.82 0.05 15.8 0.2 6 Jul 14 16.34 0.08 16.3 0.2 10 Jul 14 16.54 0.10 16.5 0.2 16 Jul 14 17.10 0.09 16.9 0.2 21 Jul 14 16.67 0.07 16.6 0.2 26 Jul 14 16.91 0.10 16.9 0.2 3 Aug 14 17.47 0.14 17.5 0.2 13 Aug 14 18.55 0.28 18.1 0.2 25 Aug 14 19.74 0.95 19.7 0.2