------------------------------------------------------------------- THE ASTRONOMER Electronic Circular No 999 1995 Sep 21 19.49UT Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise, Basingstoke, Hants, RG22 4PP,England. Telephone/FAX(0256)471074 Int:+44256471074 INTERNET: GUY@TAHQ.DEMON.CO.UK GMH at AST.STAR.RL.AC.UK WORLD WIDE WEB http://www.demon.co.uk/astronomer ------------------------------------------------------------------- COMET P/1995 S1 = P/1846 D1 (DE VICO) >From 39 observations reported in recent IAU Circulars covering the period Sept 17-20, Dan Green, Central Bureau reports a striking resemblance of the orbital elements to those of Comet D/1846 D1 (=1846 IV), Comet De Vico. From unpublished observations of 1846 Feb 27-Apr 27 a link was established to the latest data with the following elements derived: T 1995 Oct 6.0260 TT w 12.97800 ) e 0.96274000 O 79.62600 ) 2000.0 q 0.6589100 A.U. i 85.38200 ) Source: IAUC 6232 Positions are geocentric The comet was evidently missed at its 1922 return. Ephemeris calculated by Guy Hurst using EPH.EXE by Nick James: m = 7.5 + 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. 1995 Sept 21.00 9 15.30 +0 40.6 1.143 0.728 39.0 6.4 211 44 22.00 9 19.30 +1 42.3 1.129 0.720 38.9 6.3 218 44 23.00 9 23.46 +2 45.5 1.115 0.712 38.8 6.3 225 45 24.00 9 27.80 +3 50.1 1.102 0.704 38.7 6.2 232 45 25.00 9 32.34 +4 56.0 1.089 0.697 38.7 6.1 240 46 26.00 9 37.07 +6 3.3 1.076 0.691 38.6 6.1 247 47 27.00 9 42.01 +7 11.8 1.064 0.685 38.6 6.0 255 47 28.00 9 47.18 +8 21.4 1.052 0.680 38.5 5.9 263 48 29.00 9 52.59 +9 32.0 1.041 0.675 38.5 5.9 270 49 30.00 9 58.24 +10 43.4 1.030 0.671 38.5 5.8 278 50 1995 Oct 1.00 10 4.14 +11 55.4 1.020 0.667 38.5 5.8 285 51 2.00 10 10.31 +13 7.8 1.010 0.664 38.6 5.7 293 52 3.00 10 16.75 +14 20.4 1.001 0.662 38.6 5.7 300 53 4.00 10 23.47 +15 32.8 0.993 0.660 38.7 5.7 306 54 5.00 10 30.47 +16 44.8 0.986 0.659 38.8 5.7 313 55 6.00 10 37.76 +17 56.1 0.980 0.659 38.9 5.6 318 56 7.00 10 45.32 +19 6.2 0.974 0.659 39.0 5.6 323 57 8.00 10 53.17 +20 15.0 0.970 0.660 39.1 5.6 328 59 9.00 11 1.30 +21 21.9 0.966 0.662 39.3 5.6 332 60 10.00 11 9.68 +22 26.6 0.964 0.664 39.5 5.6 335 62 11.00 11 18.32 +23 28.8 0.962 0.667 39.7 5.7 337 63 12.00 11 27.19 +24 28.1 0.962 0.670 39.9 5.7 339 65 13.00 11 36.26 +25 24.3 0.963 0.675 40.2 5.7 339 66 14.00 11 45.52 +26 16.9 0.964 0.679 40.5 5.7 339 68 15.00 11 54.94 +27 5.9 0.967 0.685 40.8 5.8 338 70 16.00 12 4.48 +27 50.9 0.971 0.690 41.0 5.8 336 71 17.00 12 14.12 +28 31.8 0.976 0.697 41.4 5.9 333 73 18.00 12 23.81 +29 8.6 0.982 0.704 41.7 5.9 330 75 19.00 12 33.52 +29 41.1 0.989 0.711 42.0 6.0 326 76 20.00 12 43.22 +30 9.3 0.997 0.719 42.3 6.1 321 78 Guy M Hurst