MPEC 2005-C25 : 1990 SM = 1987 SB4
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M.P.E.C. 2005-C25 Issued 2005 Feb. 5, 15:28 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
1990 SM = 1987 SB4
Additional Observations:
J90S00M C2005 02 04.16626 04 40 05.78 +11 16 12.7 21.1 V EC025691
J90S00M C2005 02 04.19072 04 40 05.08 +11 16 18.5 21.2 V EC025691
J90S00M C2005 02 04.21355 04 40 04.43 +11 16 23.2 21.6 V EC025691
J90S00M C2005 02 05.11458 04 39 41.89 +11 19 52.9 21.4 R EC025673
J90S00M C2005 02 05.12257 04 39 41.70 +11 19 54.8 EC025673
J90S00M C2005 02 05.13021 04 39 41.52 +11 19 56.6 EC025673
J90S00M C2005 02 05.13669 04 39 41.36 +11 19 58.2 EC025673
J90S00M C2005 02 05.14329 04 39 41.23 +11 19 59.6 EC025673
Observer details:
673 Table Mountain Observatory, Wrightwood. Observer J. Young. 0.6-m
reflector + CCD.
691 Steward Observatory, Kitt Peak. Observer J. V. Scotti. 0.9-m f/3
reflector + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
050204 691 6.23+ 1.44+ 050205 673 6.18+ 1.45+ MPO 57655 -90.4 day
Orbital elements:
1990 SM = 1987 SB4
Epoch 2005 Jan. 30.0 TT = JDT 2453400.5 MPC
M 276.61571 (2000.0) P Q
n 0.32365611 Peri. 106.94413 -0.42731612 +0.89365040
a 2.1009393 Node 136.91321 -0.88694141 -0.38495878
e 0.7661165 Incl. 11.57593 -0.17531647 -0.23064194
P 3.05 H 16.1 G 0.15 U 3
Residuals in seconds of arc
870928 675 0.8- 1.6+ 900924 413 0.9+ 0.8- 050204 691 0.4- 0.5-
870928 675 1.4- 1.3+ 900925 323 0.1- 1.2- 050205 673 0.5- 0.5-
900922 413 (2.0+ 0.7+) 901015 568 0.4- 0.2+ 050205 673 0.3- 0.5-
900922 413 1.2- 0.9- 901015 568 0.3+ 0.4+ 050205 673 0.1- 0.5-
900922 413 (3.8- 1.0-) 901016 474 1.9- 0.8+ 050205 673 0.0 0.4-
900923 413 0.3+ 0.6- 901016 474 0.5- 1.1+ 050205 673 0.6+ 0.5-
900924 413 0.1+ 0.5- 050204 691 0.5+ 0.2-
900924 413 1.1+ 0.4- 050204 691 0.0 0.0
Ephemeris:
1990 SM = 1987 SB4 a,e,i = 2.10, 0.77, 12 q = 0.4914
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2005 01 30 04 42.72 +10 57.1 2.312 2.930 119.9 16.9 21.2
2005 02 09 04 38.34 +11 35.5 2.395 2.873 109.1 18.9 21.3
2005 02 19 04 36.79 +12 18.8 2.486 2.813 98.9 20.3 21.3
2005 03 01 04 37.90 +13 05.5 2.578 2.751 89.4 21.1 21.4
2005 03 11 04 41.45 +13 54.0 2.667 2.686 80.4 21.4 21.4
2005 03 21 04 47.22 +14 43.1 2.749 2.619 72.0 21.2 21.4
2005 03 31 04 54.95 +15 31.4 2.820 2.548 64.1 20.7 21.4
Brian G. Marsden (C) Copyright 2005 MPC M.P.E.C. 2005-C25
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