Comet P/2010 U2 (Hill)
Abstract
R. E. Hill reports his discovery of a comet on Catalina 0.68-m Schmidt
telescope CCD images (discovery observation tabulated below); co-added images show a diffuse nucleus with a 1"-2" coma and a thin tail about 15"-20" long in p.a. 240 deg. Following posting on the 'NEOCP', other CCD astrometrists have reported on the object's cometary appearance on Oct. 18 UT, including H. Sato (0.30-m reflector; diffuse 10" coma); E. Guido, G. Sostero, V. Gonano, and L. Donato (0.25-m reflector; slightly diffuse); L. Buzzi and S. Foglia (0.36-m reflector; faint tail); P. Miller, P. Roche, A. Tripp, and S. Foglia (2.0-m reflector; round 8" coma); and R. Ligustri (0.25-m reflector; coma diameter about 10"-15"); 2010 UT R.A. (2000) Decl. Mag. Observer Oct. 17.31577 2 06 43.63 +30 14 15.5 18.2 Hill The available astrometry (including prediscovery La Sagra Sky Survey observations from Oct. 1 and Catalina observations from Oct. 9), preliminary elliptical orbital elements (T = 2010 Nov. 9.746 TT, e = 0.40365, q = 2.55669 AU, Peri. = 44.270 deg, Node = 357.247 deg, i = 16.910 deg, equinox 2000.0, P = 8.9 years), and an ephemeris appear on MPEC 2010-U19.- Publication:
-
International Astronomical Union Circular
- Pub Date:
- October 2010
- Bibcode:
- 2010IAUC.9174....2H