MPEC 2001-S21 : 2001 SL9
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M.P.E.C. 2001-S21 Issued 2001 Sept. 21, 18:21 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
2001 SL9
Revision to MPEC 2001-S16
Observations:
K01S09L 1 1954 11 27.18819 00 26 55.85 -31 15 47.2 261
K01S09L 1 1954 11 27.19513 00 26 55.68 -31 15 57.0 261
K01S09L 2 1991 06 17.40486 20 04 50.76 +72 33 44.5 261
K01S09L 2 1991 06 17.44306 20 04 37.78 +72 32 58.0 261
K01S09L 5 1991 08 08.17986 18 30 03.07 +47 35 46.7 261
K01S09L 5 1991 08 08.23889 18 30 03.00 +47 33 20.6 261
Observer details:
261 Palomar. 1991 trails located and measured by R. Haver, A. Pelloni,
G. Forti and A. Boattini. 1951 trail located and measured by DANEOPS
(A. Gnadig, R. Stoss), who also located and measured the 1991 June 17
trail.
Orbital elements:
2001 SL9
Epoch 2001 Oct. 18.0 TT = JDT 2452200.5 Williams
M 231.38100 (2000.0) P Q
n 0.90158626 Peri. 329.25205 -0.97632497 -0.16026230
a 1.0612015 Node 202.92525 +0.16955341 -0.98404462
e 0.2699885 Incl. 21.89804 -0.13431751 -0.07727984
P 1.09 H 17.2 G 0.15 U 3
Residuals in seconds of arc
541127 261 0.9+ 0.1+ 010908 704 0.1+ 0.3+ 010918 113 0.0 0.1-
541127 261 0.4- 0.4+ 010918 644 0.1+ 0.2+ 010919 854 0.4+ 0.1-
910617 261 1.1+ 0.3- 010918 644 0.3+ 0.0 010919 854 0.1- 0.1-
910617 261 0.1+ 0.9- 010918 644 0.1- 0.0 010919 918 1.2+ 0.0
910808 261 2.5- 1.2+ 010918 557 0.1- 0.1+ 010919 918 0.2+ 0.2+
910808 261 1.0- 0.5+ 010918 557 0.2- 0.5- 010919 918 0.4- 0.3+
010823 704 0.5+ 0.5- 010918 557 0.1- 0.3- 010919 854 0.4+ 0.6-
010823 704 0.1+ 0.1+ 010918 557 0.1- 0.1- 010919 854 1.8- 0.4-
010823 704 0.6+ 0.4+ 010918 151 0.2+ 0.4- 010919 644 0.1+ 0.1-
010823 704 0.3+ 0.4- 010918 151 0.5+ 0.6- 010919 644 0.0 0.0
010823 704 0.1+ 0.2- 010918 151 0.2- 0.1- 010919 644 0.0 0.1-
010823 704 0.1+ 0.2- 010918 046 0.1- 0.2+ 010919 046 0.1- 0.1-
010823 704 0.1- 0.4- 010918 151 0.8- 0.2+ 010919 046 0.4- 0.0
010823 704 0.2- 0.5- 010918 046 0.0 0.1+ 010919 046 0.2- 0.0
010823 704 0.7- 0.4- 010918 046 0.1+ 0.1+ 010919 046 0.0 0.0
010823 704 0.4- 0.1- 010918 151 0.0 0.0 010920 719 0.6+ 1.6+
010824 644 0.3+ 0.1- 010918 046 0.2- 0.2+ 010920 719 0.4+ 0.9+
010824 644 0.2+ 0.0 010918 046 0.1- 0.2+ 010920 644 0.3- 0.4+
010824 644 0.4+ 0.0 010918 151 0.0 0.9- 010920 644 0.3- 0.3+
010908 704 0.1+ 0.2+ 010918 113 0.4+ 0.2+ 010920 644 0.4- 0.3+
010908 704 0.0 1.1- 010918 113 0.1+ 0.2-
Ephemeris:
2001 SL9 a,e,i = 1.06, 0.27, 22 q = 0.7747
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2001 09 18 02 06.32 +32 34.5 0.433 1.332 131.5 34.4 17.4
2001 09 28 01 57.93 +27 17.3 0.364 1.318 145.2 25.7 16.8
2001 10 08 01 42.20 +18 40.4 0.311 1.299 162.6 13.3 16.0
2001 10 18 01 21.14 +06 37.0 0.281 1.277 176.1 3.0 15.3
2001 10 28 00 59.35 -06 43.5 0.279 1.250 153.7 20.7 15.9
2001 11 07 00 41.69 -18 05.8 0.302 1.219 133.6 36.1 16.5
2001 11 17 00 30.83 -26 08.1 0.340 1.185 117.5 47.8 17.0
2001 11 27 00 27.19 -31 20.1 0.382 1.147 105.0 56.3 17.4
2001 12 07 00 29.53 -34 39.7 0.422 1.105 95.0 62.6 17.8
2001 12 17 00 36.28 -36 51.2 0.454 1.061 86.9 67.8 18.0
2001 12 27 00 45.93 -38 25.0 0.476 1.015 80.0 72.5 18.2
2002 01 06 00 56.79 -39 42.5 0.485 0.969 73.9 77.3 18.3
2002 01 16 01 07.11 -40 57.5 0.479 0.922 68.4 82.7 18.3
2002 01 26 01 14.46 -42 20.8 0.459 0.878 63.1 89.1 18.4
2002 02 05 01 14.81 -43 55.5 0.425 0.839 57.7 97.0 18.4
Timothy B. Spahr (C) Copyright 2001 MPC M.P.E.C. 2001-S21
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