記事タイトル：Comet C/2001 HT50最新の情報は「更新」や「再読み込み」ボタンを押してリロードしてご覧ください。 |
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S. Pravdo, E. Helin と K. Lawrence (JPL)は、 Palomarの1.2-m Schmidt鏡 で得たNEATによるCCD画像上に彗星らしき天体を発見した。 T. B. Spahr （小惑星センター）は、4月23日に LINEAR によって、また4月26日に LONEOS によって観測された小惑星状の天体 2001 HT50 （MPS 30375）と 同定し、3月3日の観測も見いだした。 発見位置、軌道要素と位置推算表は、次のとおり。 2001 UT R.A. (2000) Decl. m2 Observer Apr. 23.21809 11 49 06.20 -11 25 18.3 18.4 LINEAR 26.13959 11 47 16.89 -11 12 36.1 18.5 LONEOS May 14.22046 11 37 23.71 - 9 57 32.4 18.3 NEAT Orbital elements: C/2001 HT50 T 2003 July 8.4161 TT Marsden q 2.799521 (2000.0) P Q Peri. 323.8537 +0.2076169 +0.9583263 Node 42.8682 +0.9514875 -0.2444079 e 1.0 Incl. 163.2355 +0.2270831 +0.1479033 From 25 observations 2001 Mar. 3-May 14. Ephemeris: C/2001 HT50 Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 2001 05 11 11 38.96 -10 10.2 6.908 7.572 128.0 6.0 17.5 2001 05 21 11 34.40 -09 32.1 6.982 7.501 117.4 6.9 17.5 2001 05 31 11 30.76 -08 58.5 7.072 7.431 106.9 7.5 17.5 2001 06 10 11 28.05 -08 30.2 7.172 7.361 96.8 7.9 17.4 2001 06 20 11 26.26 -08 07.7 7.275 7.290 86.8 8.0 17.4 2001 06 30 11 25.34 -07 51.3 7.377 7.219 77.1 7.9 17.4 2001 07 10 11 25.22 -07 40.9 7.472 7.148 67.7 7.6 17.4 2001 07 20 11 25.81 -07 36.4 7.556 7.077 58.4 7.0 17.4 2001 07 30 11 27.02 -07 37.5 7.624 7.006 49.4 6.3 17.4 2001 08 09 11 28.77 -07 43.7 7.674 6.935 40.5 5.5 17.3 2001 08 19 11 30.96 -07 54.7 7.701 6.863 31.9 4.5 17.3 2001 08 29 11 33.49 -08 10.0 7.705 6.792 23.6 3.4 17.3 2001 09 08 11 36.26 -08 29.1 7.682 6.720 16.1 2.4 17.2 2001 09 18 11 39.18 -08 51.5 7.633 6.648 10.8 1.6 17.1 2001 09 28 11 42.14 -09 16.7 7.555 6.577 11.6 1.7 17.1 2001 10 08 11 45.04 -09 44.0 7.450 6.505 17.6 2.7 17.0 2001 10 18 11 47.76 -10 13.1 7.317 6.433 25.5 3.8 16.9 2001 10 28 11 50.19 -10 43.1 7.159 6.360 34.1 5.0 16.8 2001 11 07 11 52.19 -11 13.5 6.976 6.288 43.1 6.2 16.7 2001 11 17 11 53.62 -11 43.4 6.771 6.216 52.3 7.2 16.6 2001 11 27 11 54.32 -12 12.1 6.548 6.144 61.8 8.1 16.5 2001 12 07 11 54.14 -12 38.4 6.310 6.071 71.6 8.9 16.3 2001 12 17 11 52.89 -13 01.4 6.062 5.999 81.7 9.3 16.2 2001 12 27 11 50.41 -13 19.5 5.809 5.926 92.0 9.5 16.0 (IAUC 7624、MPEC 2001-J31)[2001年5月15日 20時23分15秒]