1992 AD
Abstract
J. V. Scotti, on behalf of the Spacewatch team, reports the discovery by D. L. Rabinowitz of a slow-moving asteroidal object on CCD images taken on Jan. 9 and 10. The object was subsequently independently reported by the Shoemakers from films taken on Jan. 1. Available positions: 1992 UT R.A. (2000) Decl. Mag. Observer Jan. 1.44306 8 13 55.56 +19 40 08.7 18.0 Shoemaker 1.47951 8 13 54.97 +19 40 11.1 " 9.37595 8 11 37.72 +19 58 21.7 Rabinowitz 9.40108 8 11 37.27 +19 58 25.1 17.0 " 9.42475 8 11 36.81 +19 58 28.8 " 9.50243 8 11 35.51 +19 58 38.7 16.8 Helin 10.26864 8 11 21.57 +20 00 26.7 Rabinowitz 10.28200 8 11 21.33 +20 00 28.5 " 10.28979 8 11 21.20 +20 00 29.9 17.1 " 10.50729 8 11 17.27 +20 01 00.9 Helin 13.28817 8 10 26.15 +20 07 31.2 17.1 Rabinowitz 13.30324 8 10 25.87 +20 07 33.3 " 13.31323 8 10 25.66 +20 07 34.5 " 18.59456 8 08 46.89 +20 20 00.7 McNaught 18.60329 8 08 46.72 +20 20 02.0 " 18.61150 8 08 46.57 +20 20 03.0 " 23.56181 8 07 13.02 +20 31 39.0 16.6 Tholen C. S. Shoemaker, E. M. Shoemaker, and D. H. Levy (Palomar). 0.46-m Schmidt telescope films. Measured by T. M. King. D. L. Rabinowitz and J. V. Scotti. 0.91-m Spacewatch telescope. Measured by Scotti. V magnitudes. E. F. Helin, J. Alu, and K. Lawrence (Palomar). 0.46-m Schmidt telescope. Measured by J. Alu. R. H. McNaught and L. Frederick (Siding Spring). 1.0-m reflector + CCD. D. Tholen (Mauna Kea). NASA Infrared Telescope Facility. V magnitude. B. E. A. Mueller reports the following magnitudes obtained at Kitt Peak National Observatory on Jan. 9: V = 16.86 +/- 0.02, R = 16.11 +/- 0.02, I = 15.35 +/- 0.03; no obvious coma was visible, though the seeing was poor (2"). Tholen also notes that 1992 AD is redder than any other minor planet or comet that he has observed in the past.
- Publication:
-
International Astronomical Union Circular
- Pub Date:
- January 1992
- Bibcode:
- 1992IAUC.5434....1S