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M.P.E.C. 2002-E25 Issued 2002 Mar. 9, 00:57 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets and routine data on comets. They are published
on behalf of Commission 20 of the International Astronomical Union by the
Minor Planet Center, Smithsonian Astrophysical Observatory,
Cambridge, MA 02138, U.S.A.
Prepared using the Tamkin Foundation Computer Network
MPC@CFA.HARVARD.EDU
URL http://cfa-www.harvard.edu/iau/mpc.html ISSN 1523-6714
COMETS C/1998 A2, 1998 A3, 2000 B8 (SOHO)
Observations:
CJ98A020 S1998 01 03.87985 18 54 30.0 -21 53 48 249
CJ98A020 s1998 01 03.87985 2 -0.00177615 -0.00939377 -0.00449789 249
CJ98A020 S1998 01 03.88864 18 54 17.5 -21 52 41 249
CJ98A020 s1998 01 03.88864 2 -0.00177503 -0.00939371 -0.00449762 249
CJ98A020 S1998 01 03.90153 18 53 59.2 -21 51 08 249
CJ98A020 s1998 01 03.90153 2 -0.00177340 -0.00939362 -0.00449723 249
CJ98A020 S1998 01 03.92128 18 53 32.3 -21 48 44 249
CJ98A020 s1998 01 03.92128 2 -0.00177090 -0.00939348 -0.00449663 249
CJ98A020 S1998 01 03.94312 18 53 02.8 -21 46 12 249
CJ98A020 s1998 01 03.94312 2 -0.00176813 -0.00939333 -0.00449596 249
CJ98A020 S1998 01 03.98050 18 52 14.3 -21 41 57 249
CJ98A020 s1998 01 03.98050 2 -0.00176338 -0.00939306 -0.00449482 249
CJ98A030 S1998 01 09.46408 19 19 53.6 -21 13 35 249
CJ98A030 s1998 01 09.46408 2 -0.00103004 -0.00932805 -0.00430825 249
CJ98A030 S1998 01 09.49135 19 19 14.3 -21 10 30 249
CJ98A030 s1998 01 09.49135 2 -0.00102617 -0.00932762 -0.00430724 249
CJ98A030 S1998 01 09.51108 19 18 45.5 -21 08 25 249
CJ98A030 s1998 01 09.51108 2 -0.00102338 -0.00932730 -0.00430650 249
CJ98A030 S1998 01 09.54501 19 17 57.9 -21 05 04 249
CJ98A030 s1998 01 09.54501 2 -0.00101856 -0.00932676 -0.00430524 249
CJ98A030 S1998 01 09.58062 19 17 08.8 -21 01 32 249
CJ98A030 s1998 01 09.58062 2 -0.00101351 -0.00932620 -0.00430392 249
CJ98A030 S1998 01 09.60298 19 16 39.6 -20 59 34 249
CJ98A030 s1998 01 09.60298 2 -0.00101033 -0.00932584 -0.00430309 249
CK00B080 S2000 01 16.70423 19 56 29.7 -19 58 46 249
CK00B080 s2000 01 16.70423 2 +0.00088826 -0.00835387 -0.00313056 249
CK00B080 S2000 01 16.72923 19 55 58.2 -19 52 07 249
CK00B080 s2000 01 16.72923 2 +0.00089443 -0.00835208 -0.00312914 249
CK00B080 S2000 01 16.74590 19 55 39.8 -19 47 25 249
CK00B080 s2000 01 16.74590 2 +0.00089854 -0.00835088 -0.00312820 249
CK00B080 S2000 01 16.75423 19 55 30.1 -19 45 20 249
CK00B080 s2000 01 16.75423 2 +0.00090060 -0.00835029 -0.00312772 249
CK00B080 S2000 01 16.77091 19 55 08.9 -19 40 43 249
CK00B080 s2000 01 16.77091 2 +0.00090471 -0.00834909 -0.00312678 249
CK00B080 S2000 01 16.78756 19 54 47.9 -19 36 23 249
CK00B080 s2000 01 16.78756 2 +0.00090882 -0.00834789 -0.00312583 249
CK00B080 S2000 01 16.81344 19 54 13.9 -19 30 06 249
CK00B080 s2000 01 16.81344 2 +0.00091521 -0.00834603 -0.00312436 249
CK00B080 S2000 01 16.82923 19 53 53.5 -19 26 13 249
CK00B080 s2000 01 16.82923 2 +0.00091911 -0.00834489 -0.00312346 249
CK00B080 S2000 01 16.83758 19 53 42.6 -19 24 26 249
CK00B080 s2000 01 16.83758 2 +0.00092117 -0.00834429 -0.00312298 249
CK00B080 S2000 01 16.85424 19 53 23.1 -19 21 13 249
CK00B080 s2000 01 16.85424 2 +0.00092528 -0.00834309 -0.00312204 249
CK00B080 S2000 01 16.88067 19 52 46.7 -19 15 58 249
CK00B080 s2000 01 16.88067 2 +0.00093181 -0.00834117 -0.00312053 249
CK00B080 S2000 01 16.89590 19 52 27.3 -19 13 16 249
CK00B080 s2000 01 16.89590 2 +0.00093557 -0.00834007 -0.00311966 249
Observer details:
249 SOHO. SOHO-LASCO coronagraph C2. Comet detections by R. Kracht and
M. Meyer, measurements by D. Hammer, reduction by B. G. Marsden.
Orbital elements:
Comet T q e Peri. Node Incl. C
CJ98A020 1998 Jan. 3.74 0.0410 1.0 26.31 80.78 27.93 X
CJ98A030 1998 Jan. 9.30 0.0419 1.0 22.97 80.73 27.35 X
CK00B080 2000 Jan. 16.86 0.0340 1.0 54.63 75.09 70.75 X
Meyer's discovery C/2000 B8 is a member of the Meyer group. The other two
comets, detected by Kracht, are members of the Marsden group, objects that
could in fact have orbits differing significantly from the assumed parabolas.
Nevertheless, the objects clearly have orbits that pass rather close to that
of the earth (postperihelion), and D. A. J. Seargent has remarked on the
similarity to that of the Daytime Arietid meteor stream, with q = 0.09 AU and
L = 104, B = +10 (degrees, J2000.0; cf. MPEC 2002-E18). Although q is still
larger, and there are substantial differences in the other orbital elements,
the L and B values are also similar to those of both comet 96P/Machholz 1 and
the Quadrantid meteor stream.
Brian G. Marsden (C) Copyright 2002 MPC M.P.E.C. 2002-E25
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