------------------------------------------------------------------- THE ASTRONOMER Electronic Circular No 1431 1999 Jly 31 15.24UT 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 ------------------------------------------------------------------- COMET C/1999 N2 (LYNN) Updated orbital elements (cf E1428): T 1999 July 23.0274 TT w 357.78420 ) e 1.00000000 O 254.64630 ) 2000.0 q 0.7613040 A.U. i 111.66580 ) Source: MPEC 1999-O23 Positions are geocentric Revised ephemeris by Guy Hurst using EPH.EXE by Nick James: m = 9.5 + 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. 1999 July 31.00 11 54.84 +12 54.8 0.907 0.777 47.3 8.2 209 43 1999 Aug 1.00 11 58.63 +13 53.6 0.934 0.781 47.1 8.3 196 43 2.00 12 2.19 +14 49.1 0.960 0.786 46.8 8.4 184 43 3.00 12 5.52 +15 41.7 0.987 0.791 46.5 8.5 174 42 4.00 12 8.66 +16 31.4 1.013 0.797 46.3 8.5 164 42 5.00 12 11.61 +17 18.6 1.040 0.803 46.0 8.6 154 42 6.00 12 14.38 +18 3.3 1.067 0.809 45.7 8.7 146 41 7.00 12 17.00 +18 45.8 1.093 0.816 45.4 8.8 138 41 8.00 12 19.48 +19 26.2 1.119 0.823 45.0 8.9 131 41 9.00 12 21.83 +20 4.7 1.146 0.831 44.7 9.0 124 41 10.00 12 24.05 +20 41.3 1.172 0.838 44.4 9.1 118 40 11.00 12 26.16 +21 16.3 1.197 0.847 44.1 9.2 112 40 12.00 12 28.18 +21 49.8 1.223 0.855 43.7 9.3 107 40 13.00 12 30.10 +22 21.8 1.248 0.864 43.4 9.3 102 40 14.00 12 31.93 +22 52.4 1.273 0.873 43.1 9.4 97 40 15.00 12 33.68 +23 21.8 1.298 0.883 42.7 9.5 93 39 16.00 12 35.37 +23 50.0 1.322 0.892 42.4 9.6 89 39 17.00 12 36.99 +24 17.1 1.346 0.902 42.1 9.7 86 39 18.00 12 38.54 +24 43.1 1.370 0.913 41.8 9.8 83 39 19.00 12 40.04 +25 8.2 1.394 0.923 41.4 9.9 80 39 20.00 12 41.49 +25 32.4 1.417 0.934 41.1 10.0 77 39 21.00 12 42.90 +25 55.8 1.440 0.945 40.8 10.0 74 39 22.00 12 44.26 +26 18.4 1.462 0.956 40.6 10.1 72 39 23.00 12 45.59 +26 40.2 1.484 0.967 40.3 10.2 69 39 24.00 12 46.88 +27 1.3 1.506 0.979 40.0 10.3 67 39 25.00 12 48.13 +27 21.8 1.527 0.990 39.8 10.4 65 39 26.00 12 49.36 +27 41.7 1.548 1.002 39.5 10.5 64 39 27.00 12 50.56 +28 1.0 1.569 1.014 39.3 10.5 62 40 28.00 12 51.74 +28 19.8 1.589 1.026 39.1 10.6 60 40 29.00 12 52.90 +28 38.1 1.609 1.039 38.9 10.7 59 40 30.00 12 54.03 +28 55.9 1.629 1.051 38.7 10.8 58 40 31.00 12 55.15 +29 13.2 1.648 1.064 38.5 10.9 56 40 Guy M Hurst