------------------------------------------------------------------- THE ASTRONOMER Electronic Circular No 1401 1999 Apr 20 06.51UT 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 H1 (LEE) Orbital elements for the comet reported on E1400: T 1999 July 11.4210 TT w 39.67800 ) e 1.00000000 O 161.96700 ) 2000.0 q 0.7149600 A.U. i 149.51500 ) Source: IAUC 7147 Positions are geocentric Ephemeris by G.Hurst using EPH.EXE by N.James: 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 Apr 20.00 12 51.73 -67 17.7 0.884 1.662 123.2 8.9 263 288 21.00 12 34.57 -66 40.0 0.865 1.647 123.4 8.9 274 292 22.00 12 17.71 -65 52.8 0.847 1.633 123.5 8.8 286 297 23.00 12 1.34 -64 56.1 0.830 1.619 123.5 8.7 298 301 24.00 11 45.64 -63 49.9 0.814 1.604 123.4 8.6 309 305 25.00 11 30.72 -62 34.4 0.799 1.590 123.1 8.5 320 308 26.00 11 16.67 -61 9.9 0.786 1.576 122.7 8.5 331 312 27.00 11 3.54 -59 36.9 0.773 1.562 122.1 8.4 341 315 28.00 10 51.33 -57 56.0 0.762 1.547 121.4 8.3 351 318 29.00 10 40.04 -56 7.9 0.753 1.533 120.5 8.2 359 321 30.00 10 29.62 -54 13.2 0.744 1.518 119.5 8.2 367 323 1999 May 1.00 10 20.03 -52 12.7 0.737 1.504 118.3 8.1 373 325 2.00 10 11.23 -50 7.3 0.732 1.490 117.0 8.1 378 327 3.00 10 3.15 -47 57.8 0.728 1.475 115.5 8.0 381 329 4.00 9 55.73 -45 45.0 0.725 1.461 113.9 7.9 383 331 5.00 9 48.93 -43 29.9 0.724 1.447 112.2 7.9 384 332 6.00 9 42.69 -41 13.2 0.724 1.432 110.4 7.9 383 334 7.00 9 36.95 -38 55.7 0.726 1.418 108.5 7.8 380 335 8.00 9 31.68 -36 38.3 0.729 1.403 106.6 7.8 376 336 9.00 9 26.82 -34 21.6 0.733 1.389 104.6 7.8 370 337 10.00 9 22.35 -32 6.2 0.739 1.375 102.6 7.7 363 338 11.00 9 18.23 -29 52.9 0.746 1.360 100.5 7.7 355 339 12.00 9 14.41 -27 41.9 0.754 1.346 98.4 7.7 347 339 13.00 9 10.89 -25 33.9 0.764 1.332 96.3 7.7 337 340 14.00 9 7.62 -23 29.0 0.774 1.317 94.2 7.6 327 341 15.00 9 4.60 -21 27.6 0.786 1.303 92.1 7.6 316 341 16.00 9 1.78 -19 29.9 0.798 1.289 90.1 7.6 306 342 17.00 8 59.17 -17 36.0 0.811 1.274 88.0 7.6 295 342 18.00 8 56.73 -15 46.1 0.826 1.260 86.0 7.6 284 343 19.00 8 54.45 -14 0.0 0.841 1.246 84.0 7.6 273 343 20.00 8 52.33 -12 17.9 0.856 1.232 82.0 7.6 262 343 21.00 8 50.33 -10 39.7 0.873 1.217 80.1 7.6 252 344 22.00 8 48.47 -9 5.2 0.889 1.203 78.2 7.5 241 344 23.00 8 46.71 -7 34.5 0.907 1.189 76.4 7.5 232 344 24.00 8 45.06 -6 7.4 0.925 1.175 74.5 7.5 222 344 25.00 8 43.50 -4 43.7 0.943 1.161 72.7 7.5 213 345 26.00 8 42.03 -3 23.4 0.962 1.147 71.0 7.5 204 345 27.00 8 40.63 -2 6.3 0.981 1.133 69.3 7.5 196 345 28.00 8 39.31 -0 52.2 1.000 1.119 67.6 7.5 188 345 29.00 8 38.05 +0 19.0 1.019 1.106 65.9 7.5 181 345 30.00 8 36.86 +1 27.4 1.039 1.092 64.3 7.5 174 345 31.00 8 35.71 +2 33.2 1.059 1.078 62.7 7.5 167 345 Guy M Hurst