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Summary of the brighter comets in 1989


The following table gives a summary of the comets brighter than 16 mag, which were observed by members of the German Comet Section.

The maximum brightness of comets brighter than 10.0 mag is given with an accuracy of 0.1 mag, that of fainter comets with an accuracy of 0.5 mag. The maximum coma diameter is given with an accuracy of 0.1' for comae less than 1', with an accuracy of 0.5' for comae between 1' and 5' and with an accuracy of 1' for larger comae.

old Design. new Design. Comet's Name discovered T q [AU] m_max Coma ['] FGK
1988r C/1988 Y1 Yanaka Dec 29, 1988 Dec 11, 1988 0.43 9.0 2.5 V, P
1989a C/1989 A1 Yanaka Jan 01, 1989 Oct 31, 1988 1.89 10.5 2.5 V, P
1989b 111P P/Helin-Roman-Crockett Jan 02, 1989 Sep 13, 1988 3.47 14.0 1.0 P
1989e C/1989 A5 Shoemaker Jan 13, 1989 Feb 26, 1989 2.64 13.5 1.0 V, P
1989j 121P P/Shoemaker-Holt 2 Mar 09, 1989 Aug 07, 1988 2.64 13.5 0.8 P
1989n 78P P/Gehrels 2 Jun 14, 1989 Nov 03, 1989 2.35 13.5 0.7 P
1989o 23P P/Brorsen-Metcalf Jul 04, 1989 Sep 11, 1989 0.48 5.6 12 V, P
1989p 93P P/Lovas 1 Jul 07, 1989 Oct 10, 1989 1.68 13.0 0.8 P
1989r C/1989 Q1 Okazaki-Levy-Rudenko Aug 25, 1989 Nov 11, 1989 0.64 5.7 8 V, P
1989s C/1989 R1 Helin-Roman Sep 04, 1989 Aug 20, 1989 1.32 13.0 1.5 V, P
1989v C/1989 T1 Helin-Roman-Alu Oct 01, 1989 Dec 15, 1989 1.05 9.8 4.5 V, P
1989a1 C/1989 W1 Aarseth-Brewington Nov 16, 1989 Dec 27, 1989 0.30 3.0 5.0 V, P
1989e1 C/1989 Y1 Skorichenko-George Dec 18, 1989 Apr 11, 1990 1.57 8.7 3.0 V, P
29P P/Schwassmann-Wachmann 1 - Sep 12, 1989 5.76 12.5 1.0 V, P
65P P/Gunn - Sep 24, 1989 2.47 12.5 1.0 V, P

Explanation

Andreas Kammerer


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