MPEC 2009-J14 : COMET C/2002 S7 = 2008 N4 = 1996 X3 (SOHO)
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M.P.E.C. 2009-J14 Issued 2009 May 4, 03:19 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
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URL http://www.cfa.harvard.edu/iau/mpc.html ISSN 1523-6714
COMET C/2002 S7 = 2008 N4 = 1996 X3 (SOHO)
Orbital elements:
Epoch 1996 Dec. 23.0 TT = JDT 2450440.5
T 1996 Dec. 6.12338 TT MPC
q 0.0490795 (2000.0) P Q
n 0.17006641 Peri. 51.39986 -0.19306219 -0.96411157
a 3.2264407 Node 50.72645 +0.81106449 -0.26134311
e 0.9847883 Incl. 13.61683 +0.55217875 +0.04678309
P 5.80
Epoch 2002 Sept. 3.0 TT = JDT 2452520.5
T 2002 Sept. 21.06697 TT MPC
q 0.0482438 (2000.0) P Q
n 0.17039402 Peri. 51.58326 -0.19352578 -0.96417362
a 3.2223038 Node 50.56599 +0.81094498 -0.26128641
e 0.9850282 Incl. 13.58602 +0.55219201 +0.04581097
P 5.78
Epoch 2008 June 23.0 TT = JDT 2454640.5
T 2008 July 4.38322 TT MPC
q 0.0481635 (2000.0) P Q
n 0.17042230 Peri. 52.38575 -0.19486007 -0.96455411
a 3.2219474 Node 49.82469 +0.81045099 -0.26052514
e 0.9850514 Incl. 13.46737 +0.55244796 +0.04197640
P 5.78
Residuals in seconds of arc
961205 249(89.2- 52.2-)Y 020920 249(19.4+ 29.8-)Y 020921 249 1.4- 7.3+ Y
961205 249 9.0- 18.1- Y 020920 249 18.3+ 15.8+ Y 020921 249 15.1- 18.9+ Y
961205 249 19.5- 2.3- Y 020920 249(63.1+ 18.4+)Y 020921 249 7.2- 9.7+ Y
961206 249(37.5- 7.3+)Y 020921 249 (5.9- 24.1-)Y 080704 249 5.2+ 5.2+ Y
961206 249 3.8+ 14.3- Y 020921 249(29.1- 6.0-)Y 080704 249 4.3+ 7.1+ Y
961206 249 6.4+ 12.3- Y 020921 249(29.1- 40.7+)Y 080704 249 0.2+ 5.0+ Y
020920 249(28.1- 16.2-)Y 020921 249 9.1+ 16.0+ Y 080704 249 2.0+ 4.4+ Y
020920 249 5.8+ 8.7- Y 020921 249(13.1- 51.3+)Y 080704 249 5.7- 5.0+ Y
020920 249 7.6+ 2.3+ Y 020921 249 9.3+ 16.9- Y 080704 249 3.3- 7.2+ Y
020920 249(30.0- 7.3+)Y 020921 249 4.6- 17.7- Y 080704 249 5.8+ 0.5+ Y
020920 249(15.5- 20.7+)Y 020921 249(22.0+ 32.0-)Y 080704 249 4.3+ 4.0+ Y
020920 249 13.2- 9.7- Y 020921 249(29.2- 21.4-)Y 080704 249 7.6- 1.3- Y
020920 249(13.6+ 30.7-)Y 020921 249 2.1- 6.4- Y 080704 249(15.2+ 21.0+)Y
020920 249 9.7- 7.8+ Y 020921 249 1.6- 12.7- Y 080704 249(33.1+ 41.7+)Y
020920 249 9.9- 9.5- Y 020921 249 4.4- 10.3- Y 080704 249(23.9- 14.0+)Y
Following up on MPEC 2008-P60 (where the comets C/1996 S5, C/1996 S4 and
C/1996 S3 should have been given as C/1996 X5, C/1996 X4 and C/1996 X3),
R. Kracht has suggested that the correct linkage for C/2002 S7 = C/2008 N4 is
with C/1996 X3, on the assumption that the comet was affected by small
nongravitational forces (see also MPEC 2009-H56). The above nongravitational
linkage, with parameters A1 = 0.0000, A2 = +0.0027, is based on Kracht's work.
Brian G. Marsden (C) Copyright 2009 MPC M.P.E.C. 2009-J14
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