MPEC 2005-H24 : COMETS C/1996 N3, 1997 J5, 1998 U7 (SOHO)
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M.P.E.C. 2005-H24 Issued 2005 Apr. 22, 22:25 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.
Supported in part by the Brinson Foundation
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/1996 N3, 1997 J5, 1998 U7 (SOHO)
Observations:
CJ96N030 2S1996 07 03.38330 06 44 46.5 +22 19 00 EH024249
CJ96N030 2s1996 07 03.38330 2 +0.00066154 +0.01055656 +0.00376688 EH024249
CJ96N030 2S1996 07 03.48372 06 46 26.7 +22 48 23 EH024249
CJ96N030 2s1996 07 03.48372 2 +0.00065539 +0.01055573 +0.00376829 EH024249
CJ96N030 2S1996 07 03.51454 06 46 59.8 +22 57 26 EH024249
CJ96N030 2s1996 07 03.51454 2 +0.00065350 +0.01055547 +0.00376873 EH024249
CJ96N030 2S1996 07 03.60776 06 48 45.4 +23 24 44 EH024249
CJ96N030 2s1996 07 03.60776 2 +0.00064775 +0.01055470 +0.00377004 EH024249
CJ96N030 2S1996 07 03.64637 06 49 31.8 +23 35 52 EH024249
CJ96N030 2s1996 07 03.64637 2 +0.00064536 +0.01055438 +0.00377059 EH024249
CJ96N030 2S1996 07 03.67726 06 50 10.4 +23 44 33 EH024249
CJ96N030 2s1996 07 03.67726 2 +0.00064344 +0.01055412 +0.00377103 EH024249
CJ96N030 3S1996 07 03.95437 06 56 25.1 +24 45 15 EH024249
CJ96N030 3s1996 07 03.95437 2 +0.00062608 +0.01055181 +0.00377497 EH024249
CJ96N030 3S1996 07 03.98527 06 57 12.3 +24 48 52 EH024249
CJ96N030 3s1996 07 03.98527 2 +0.00062412 +0.01055156 +0.00377541 EH024249
CJ96N030 3S1996 07 04.01614 06 57 51.6 +24 52 43 EH024249
CJ96N030 3s1996 07 04.01614 2 +0.00062216 +0.01055130 +0.00377586 EH024249
CJ96N030 3S1996 07 04.04700 06 58 31.1 +24 55 28 EH024249
CJ96N030 3s1996 07 04.04700 2 +0.00062020 +0.01055104 +0.00377630 EH024249
CJ96N030 3S1996 07 04.08302 06 59 19.9 +24 57 50 EH024249
CJ96N030 3s1996 07 04.08302 2 +0.00061791 +0.01055073 +0.00377682 EH024249
CJ96N030 3S1996 07 04.10867 06 59 52.7 +24 58 55 EH024249
CJ96N030 3s1996 07 04.10867 2 +0.00061627 +0.01055052 +0.00377718 EH024249
CJ96N030 3S1996 07 04.17547 07 01 11.0 +25 01 02 EH024249
CJ96N030 3s1996 07 04.17547 2 +0.00061200 +0.01054995 +0.00377815 EH024249
CJ96N030 3S1996 07 04.20877 07 01 53.5 +25 01 20 EH024249
CJ96N030 3s1996 07 04.20877 2 +0.00060986 +0.01054967 +0.00377863 EH024249
CJ96N030 3S1996 07 04.27098 07 03 02.6 +25 00 12 EH024249
CJ96N030 3s1996 07 04.27098 2 +0.00060586 +0.01054914 +0.00377952 EH024249
CJ96N030 3S1996 07 04.30961 07 03 46.0 +25 00 00 EH024249
CJ96N030 3s1996 07 04.30961 2 +0.00060336 +0.01054882 +0.00378008 EH024249
CJ96N030 3S1996 07 04.34050 07 04 17.2 +24 58 35 EH024249
CJ96N030 3s1996 07 04.34050 2 +0.00060136 +0.01054855 +0.00378053 EH024249
CJ96N030 3S1996 07 04.37143 07 04 50.6 +24 57 33 EH024249
CJ96N030 3s1996 07 04.37143 2 +0.00059936 +0.01054829 +0.00378098 EH024249
CJ97J050 3S1997 05 02.19660 02 48 47.0 +12 03 14 EH024249
CJ97J050 3s1997 05 02.19660 2 +0.00507040 +0.00912580 +0.00338858 EH024249
CJ97J050 3S1997 05 02.26465 02 48 19.4 +12 10 22 EH024249
CJ97J050 3s1997 05 02.26465 2 +0.00506546 +0.00913111 +0.00338912 EH024249
CJ97J050 3S1997 05 02.32715 02 47 52.9 +12 18 02 EH024249
CJ97J050 3s1997 05 02.32715 2 +0.00506092 +0.00913598 +0.00338961 EH024249
CJ97J050 3S1997 05 02.37160 02 47 33.8 +12 22 58 EH024249
CJ97J050 3s1997 05 02.37160 2 +0.00505770 +0.00913943 +0.00338995 EH024249
CJ97J050 3S1997 05 02.41951 02 47 10.4 +12 28 55 EH024249
CJ97J050 3s1997 05 02.41951 2 +0.00505422 +0.00914315 +0.00339032 EH024249
CJ97J050 3S1997 05 02.46189 02 46 52.7 +12 34 04 EH024249
CJ97J050 3s1997 05 02.46189 2 +0.00505115 +0.00914643 +0.00339065 EH024249
CJ97J050 3S1997 05 02.57720 02 46 01.1 +12 49 03 EH024249
CJ97J050 3s1997 05 02.57720 2 +0.00504278 +0.00915534 +0.00339153 EH024249
CJ97J050 3S1997 05 02.62576 02 45 35.0 +12 55 56 EH024249
CJ97J050 3s1997 05 02.62576 2 +0.00503925 +0.00915908 +0.00339190 EH024249
CJ97J050 3S1997 05 02.69673 02 45 01.3 +13 05 34 EH024249
CJ97J050 3s1997 05 02.69673 2 +0.00503410 +0.00916453 +0.00339243 EH024249
CJ97J050 3S1997 05 02.75001 02 44 35.1 +13 12 46 EH024249
CJ97J050 3s1997 05 02.75001 2 +0.00503023 +0.00916862 +0.00339283 EH024249
CJ98U070 3S1998 10 26.97932 13 53 24.8 -15 29 27 EH024249
CJ98U070 3s1998 10 26.97932 2 -0.00689342 -0.00756036 -0.00397684 EH024249
CJ98U070 3S1998 10 27.02090 13 54 15.5 -15 23 22 EH024249
CJ98U070 3s1998 10 27.02090 2 -0.00689090 -0.00756224 -0.00397856 EH024249
CJ98U070 3S1998 10 27.06381 13 55 09.7 -15 17 33 EH024249
CJ98U070 3s1998 10 27.06381 2 -0.00688830 -0.00756417 -0.00398032 EH024249
CJ98U070 3S1998 10 27.10423 13 56 02.4 -15 12 16 EH024249
CJ98U070 3s1998 10 27.10423 2 -0.00688585 -0.00756599 -0.00398198 EH024249
CJ98U070 3S1998 10 27.14590 13 56 57.8 -15 06 06 EH024249
CJ98U070 3s1998 10 27.14590 2 -0.00688333 -0.00756785 -0.00398369 EH024249
CJ98U070 3S1998 10 27.18756 13 57 48.8 -14 59 45 EH024249
CJ98U070 3s1998 10 27.18756 2 -0.00688082 -0.00756970 -0.00398539 EH024249
CJ98U070 3S1998 10 27.22923 13 58 47.2 -14 53 36 EH024249
CJ98U070 3s1998 10 27.22923 2 -0.00687830 -0.00757155 -0.00398709 EH024249
CJ98U070 3S1998 10 27.27090 13 59 39.4 -14 46 47 EH024249
CJ98U070 3s1998 10 27.27090 2 -0.00687579 -0.00757339 -0.00398879 EH024249
CJ98U070 3S1998 10 27.31375 14 00 40.2 -14 38 19 EH024249
CJ98U070 3s1998 10 27.31375 2 -0.00687322 -0.00757528 -0.00399053 EH024249
Observer details:
249 SOHO. SOHO-LASCO coronagraphs C2 and C3. Comet detections by R. Kracht
and X. Leprette, measurements by K. Battams, reductions by B. G. Marsden.
Orbital elements:
Comet T q e Peri. Node Incl. C
CJ96N030 1996 July 3.85 0.0351 1.0 57.17 73.16 72.12 X
CJ97J050 1997 May 3.36 0.0077 1.0 57.56 331.00 138.67 X
CJ98U070 1998 Oct. 27.67 0.0067 1.0 48.66 316.22 131.34 X
C/1996 N3 is a member of the Meyer group, whereas C/1997 J5 and C/1998 U7
belong to the Kreutz group.
Further to the statement at the end of MPEC 2005-G94, it should be noted
that the best fit of C/2005 G2 to earlier comets is to C/1999 N5, the
resulting orbital solution (using C2 observations alone, although the C3
observations do not show any systematic departure above 1 arcmin) being as
follows:
Epoch 1999 July 1.0 TT = JDT 2451360.5
T 1999 July 11.19490 TT MPC
q 0.0491952 (2000.0) P Q
n 0.17125016 Peri. 22.12065 -0.20082361 -0.87351581
a 3.2115552 Node 81.78500 +0.81825112 -0.39846583
e 0.9846818 Incl. 26.61790 +0.53864179 +0.27963390
P 5.76
Epoch 2005 Apr. 20.0 TT = JDT 2453480.5
T 2005 Apr. 14.25300 TT MPC
q 0.0492009 (2000.0) P Q
n 0.17117101 Peri. 22.23192 -0.20027078 -0.87472552
a 3.2125452 Node 81.62939 +0.81832607 -0.39702389
e 0.9846848 Incl. 26.49073 +0.53873375 +0.27789800
P 5.76
Residuals in seconds of arc
J997A 249 2.2+ 2.5- Y J997B 249 2.0- 0.1- Y J997B 249 1.5+ 0.5- Y
J997A 249 4.3+ 3.0- Y J997B 249 1.8+ 2.9- Y J997B 249 4.1+ 3.4- Y
J997A 249 3.8- 1.2+ Y J997B 249 4.7- 1.3+ Y J997B 249 2.2+ 1.7+ Y
J997B 249(13.5+ 6.6+)Y J997B 249 0.6+ 2.9- Y K054D 249 1.0+ 14.0- Y
J997B 249 1.3+ 0.3- Y J997B 249 2.4+ 0.1+ Y K054D 249 3.3- 9.5+ Y
J997B 249 4.9+ 0.4- Y J997B 249 0.4+ 3.1+ Y K054D 249 1.9+ 10.3- Y
J997B 249 2.6- 0.0 Y J997B 249 0.6- 0.0 Y K054D 249 (6.6+ 19.3-)Y
J997B 249 1.7- 3.8+ Y J997B 249 1.4+ 3.7+ Y K054D 249 1.1+ 3.2+ Y
J997B 249 2.8- 3.1+ Y J997B 249 2.5+ 1.7- Y K054D 249 1.6- 2.2+ Y
J997B 249 4.1- 2.4+ Y J997B 249 3.1+ 2.2- Y K054D 249 4.8+ 4.8+ Y
J997B 249 0.7- 0.4+ Y J997B 249 0.3+ 0.3+ Y K054D 249 1.1- 6.3- Y
J997B 249 3.3- 4.5+ Y J997B 249 3.0- 1.8- Y K054D 249 2.0- 10.1+ Y
On MPEC 2005-E87, C/1999 N5 was linked (with comparable residuals) to
C/2005 E4. It therefore seems plausible that C/2005 G2 separated from
C/2005 E4 around the time of the C/1999 N5 perihelion passage, in much the
same manner that C/1999 N5 may have separated from C/1999 J6 around a mutual
Nov. 1993 perihelion passage. If C/1999 P6 (cf. MPEC 2002-F43) also separated
at that 1993 perihelion passage, it should return (if it has survived) within
a few days of 2005 Apr. 28 (likewise for C/1999 P8 and P9 around 2005 May 18).
Brian G. Marsden (C) Copyright 2005 MPC M.P.E.C. 2005-H24
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