------------------------------------------------------------------- THE ASTRONOMER Electronic Circular No 1462 1999 Oct 26 18.05UT Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise, Basingstoke, Hants, RG22 4PP,England.Telephone/FAX(01256)471074Int:+441256471074 INTERNET: GUY@TAHQ.DEMON.CO.UK GMH at AST.STAR.RL.AC.UK WORLD WIDE WEB http://www.demon.co.uk/astronomer ------------------------------------------------------------------- EDITORIAL ABSENCE The editor will be away and not contactable from October 27 (after BAA AGM) until Sunday evening October 31. During that time please refer urgent queries to Nick James or Denis Buczynski. COMET C/1999 S4 (LINEAR) Updated orbital elements and ephemeris (cf E1452): T 2000 July 26.4630 TT w 150.98620 ) e 1.00000000 O 83.15000 ) 2000.0 q 0.7666180 A.U. i 149.34540 ) Source: IAUC 7285 Positions are geocentric m = 7.0 + 5.0 log R + 10.0 log r Date R.A. (2000) Dec. R r Elong Mag. Motion h m o ' (AU) (AU) o "/hr P.A. 1999 Oct 19.00 4 45.67 +35 56.0 3.393 4.096 129.2 15.8 38 286 24.00 4 39.15 +36 16.6 3.276 4.042 135.0 15.6 43 283 29.00 4 31.67 +36 35.1 3.167 3.987 140.9 15.5 49 280 1999 Nov 3.00 4 23.23 +36 50.4 3.065 3.932 146.7 15.4 54 277 8.00 4 13.86 +37 1.4 2.972 3.877 152.4 15.3 59 274 13.00 4 3.63 +37 7.3 2.889 3.822 157.5 15.1 64 271 18.00 3 52.66 +37 6.9 2.816 3.766 161.4 15.0 68 268 23.00 3 41.10 +36 59.6 2.754 3.710 163.0 14.9 71 266 28.00 3 29.16 +36 44.9 2.703 3.653 161.7 14.8 73 263 1999 Dec 3.00 3 17.05 +36 22.6 2.664 3.596 157.8 14.7 74 260 8.00 3 5.02 +35 52.9 2.637 3.539 152.4 14.6 74 257 13.00 2 53.30 +35 16.8 2.620 3.482 146.2 14.5 73 254 18.00 2 42.11 +34 35.2 2.614 3.424 139.7 14.4 71 252 23.00 2 31.61 +33 49.5 2.618 3.366 133.0 14.4 67 249 28.00 2 21.93 +33 1.3 2.630 3.308 126.2 14.3 63 247 2000 Jan 2.00 2 13.14 +32 11.9 2.650 3.249 119.5 14.2 58 245 7.00 2 5.30 +31 22.8 2.675 3.190 112.9 14.2 53 243 12.00 1 58.41 +30 35.1 2.706 3.130 106.5 14.1 48 241 17.00 1 52.45 +29 49.8 2.740 3.070 100.2 14.1 42 239 22.00 1 47.37 +29 7.7 2.776 3.010 94.0 14.0 37 236 27.00 1 43.13 +28 29.2 2.813 2.949 88.1 13.9 31 234 2000 Feb 1.00 1 39.66 +27 54.7 2.851 2.888 82.3 13.9 26 232 6.00 1 36.91 +27 24.4 2.887 2.827 76.6 13.8 21 229 11.00 1 34.81 +26 58.3 2.921 2.765 71.2 13.7 17 225 16.00 1 33.29 +26 36.5 2.951 2.702 65.9 13.7 13 220 21.00 1 32.30 +26 18.7 2.978 2.639 60.7 13.6 9 213 26.00 1 31.79 +26 4.9 3.000 2.576 55.7 13.5 6 199 2000 Mar 2.00 1 31.70 +25 55.0 3.017 2.512 50.9 13.4 4 170 7.00 1 31.99 +25 48.7 3.029 2.448 46.2 13.3 4 126 12.00 1 32.61 +25 46.0 3.033 2.383 41.6 13.2 5 96 17.00 1 33.54 +25 46.5 3.031 2.318 37.2 13.1 7 81 22.00 1 34.72 +25 50.3 3.022 2.253 33.0 12.9 9 73 27.00 1 36.13 +25 57.0 3.005 2.187 29.0 12.8 11 68 Guy M Hurst