THE ASTRONOMER Electronic Circular No 245 1989 Jan 15 18.37UT. Telecom Gold 72:MAG60138 Ed:Guy M Hurst, 16, Westminster Close, Kempshott Rise, Basingstoke, Hants, RG22 4PP, England. Telephone:(0256)471074.Int:+44256471074 Telex:265871(MONREF G) Quote"72:MAG60138 ATT G.HURST"in FIRST line. ------------------------------------------------------------------- COMET SHOEMAKER (1989e) Brian Marsden telexes that Shoemaker has discovered a comet as follows: 1989 Jan 13.52725UT RA 10h12.4m DEC +19 05' Mag 13 14.38489 10 11.0 +19 46 1989 AZ A fast-moving asteroid has been found by C.S.and E.M.Shoemaker with the 0.46-m Palomar Schmidt on Jan 8 at mag 17. Ephemeris: Jan 12 RA 09h36.06m DEC +15 44.9' Earth 0.134 Sun 1.102 V=15.9 14 09 23.50 +13 29.3 16 09 12.91 +11 34.8 0.160 1.133 16.1 18 09 03.90 +09 58.4 20 08 56.18 +08 37.4 0.188 1.166 16.4 IAUC 4713 COMET HELIN-ROMAN-CROCKETT (1989b) Updated elements: T =1988 June 30.40 ET Peri=357.53 e =0.1439 Node= 92.24 (1950) q =3.4797 AU Incl= 4.36 a =4.0648 AU n=0.12027 P = 8.20 years Ephemeris: Jan 14 08h30.27m +21 59.5 Earth 2.577 Sun 3.546 14.6 24 08 23.19 +22 33.2 Feb 3 08 16.10 +23 03.4 2.592 3.560 14.6 13 08 09.71 +23 27.8 23 08 04.67 +23 45.0 2.723 3.574 14.7 IAUC 4714 1989 AC Revised ephemeris(cfE-240): Jan 24 05h49.50m +23 02.6 26 05 56.82 +23 07.7 0.330 1.266 13.7 28 06 03.55 +23 11.2 30 06 09.76 +23 13.3 0.373 1.302 14.0 Feb 1 06 15.54 +23 14.4 3 06 20.96 +23 14.5 0.418 1.338 14.3 5 06 26.06 +23 13.9 7 06 30.89 +23 12.7 0.466 1.374 14.6 IAUC 4715 COMET BRADFIELD (1989c) Improved elements by Herald from 15 observations Jan 7-13: T =1988 Dec. 5.477 ET Peri=195.969 Node= 27.485 (1950) q =0.42654 AU Incl= 82.885 Ephemeris: Jan 14 22h22.97m -51 53.0 1.472 1.019 11.9 24 23 24.91 -44 30.0 1.670 1.201 12.9 Feb 3 00 03.60 -37 41.7 1.893 1.376 13.8 13 00 30.72 -31 57.7 2.127 1.545 14.5 IAUC 4716 Guy M Hurst