THE ASTRONOMER Electronic Circular No 593 1991 Dec 28 20.05UT Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise, Basingstoke, Hants, RG22 4PP,England. Telephone/FAX(0256)471074 Int:+44256471074 Telex: 9312111261 Answerback: TA G JANET BOXES: GMH at UK.AC.CAM.ASTRONOMY.STARLINK or GUYH at UK.AC.SUSSEX.CLUSTER TELECOM GOLD: 10074:MIK2885 PRESTEL 256471074 ------------------------------------------------------------------- COMET ZANOTTA-BREWINGTON (1991g1) Parabolic orbital elements from 9 observations Dec. 24-28: T = 1992 Jan. 31.887 TT Peri. = 197.719 Node = 255.100 2000.0 q = 0.64426 AU Incl. = 49.964 1991/92 R. A. (2000) Decl. Delta r Elong. Phase m1 Dec. 20 20 32.25 +20 24.0 1.182 1.081 59.0 51.3 9.7 25 20 48.97 +18 38.8 1.118 1.007 56.9 54.9 9.3 30 21 07.41 +16 35.0 1.052 0.936 54.6 59.0 8.8 Jan. 4 21 27.67 +14 04.9 0.986 0.867 52.3 63.7 8.3 9 21 49.76 +10 58.9 0.921 0.804 49.8 69.1 7.9 14 22 13.55 + 7 05.7 0.859 0.747 47.2 75.1 7.4 19 22 38.69 + 2 14.5 0.804 0.700 44.7 81.4 7.0 24 23 04.60 - 3 40.7 0.758 0.666 42.5 87.2 6.6 29 23 30.47 -10 34.6 0.725 0.647 41.1 91.6 6.4 Feb. 3 23 55.49 -18 06.9 0.707 0.646 40.9 93.4 6.3 8 0 19.09 -25 46.6 0.704 0.662 42.1 92.4 6.4 IAUC 5419 Guy M Hurst