MPEC 2001-Q05: 1998 SU27
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M.P.E.C. 2001-Q05 Issued 2001 Aug. 17, 15:35 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
1998 SU27
Revision to MPEC 1998-S35
Observations:
J98S27U C2001 08 15.98485 21 42 43.35 -00 27 34.8 21.5 493
J98S27U tC2001 08 15.98736 21 42 43.07 -00 27 34.4 493
J98S27U C2001 08 16.39225 21 42 03.15 -00 27 51.0 21.7 V 691
J98S27U C2001 08 16.40054 21 42 02.27 -00 27 51.2 21.8 V 691
J98S27U C2001 08 16.40881 21 42 01.44 -00 27 51.7 22.1 V 691
Observer details:
493 Calar Alto. Observers K. Sarneczky, Gy. Szabo, K. Sziladi. 1.23-m
reflector + CCD.
691 Steward Observatory, Kitt Peak. Observer T. Gehrels. 0.9-m Spacewatch
telescope.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
010815 493 0.07+ 0.03+ 010816 691 0.07+ 0.03+ MPO 7472 -0.10 day
Orbital elements:
1998 SU27
Epoch 2001 Oct. 18.0 TT = JDT 2452200.5 Spahr
M 335.80487 (2000.0) P Q
n 0.31840611 Peri. 169.39873 +0.15469884 -0.98022726
a 2.1239704 Node 271.62038 +0.89716501 +0.19167821
e 0.5932637 Incl. 7.09010 +0.41371877 -0.04913231
P 3.10 H 19.4 G 0.15 U 1
Residuals in seconds of arc
980924 704 0.3- 0.3+ 980926 699 0.1+ 1.8- 981009 046 0.1+ 0.4-
980924 704 1.3- 0.7+ 980926 704 0.2+ 1.3- 981009 046 0.3+ 0.6-
980924 704 0.7- 1.4+ 980926 699 0.4+ 0.8- 981009 046 0.1- 0.3-
980924 704 1.5- 0.7+ 980926 704 0.5+ 1.6- 981009 046 0.1- 0.3-
980924 046 0.2+ 0.4- 980926 699 (0.4+ 2.5-) 981012 557 0.2- 0.3+
980924 046 0.6+ 0.3- 980926 704 0.5+ 1.1- 981012 557 0.4- 0.4+
980924 118 0.5+ 0.1- 980926 704 0.1+ 0.3- 981012 557 0.5- 0.4+
980924 046 0.2+ 0.0 980926 704 0.4+ 0.1- 981012 587 (0.6- 2.2+)
980924 118 0.4+ 0.2- 980926 426 0.6- 0.7+ 981012 587 1.0+ 0.3-
980924 118 0.6+ 0.3- 980926 426 0.0 0.2- 981012 587 0.4- 0.3+
980925 557 0.3+ 0.3- 980926 426 0.2- 1.0+ 981015 049 (2.2+ 3.3-)
980925 557 0.4+ 0.4- 980926 046 0.4+ 0.8+ 981015 049 (1.8+ 2.8-)
980925 557 0.5+ 0.2- 980926 046 (0.0 2.6+) 981015 049 (2.1+ 3.2-)
980925 422 (0.2- 2.5-) 980926 046 0.9+ 1.9+ 981015 118 0.2+ 0.4-
980925 422 0.8+ 0.3- 980926 046 0.9- 0.3+ 981015 118 0.2+ 0.2-
980925 422 0.6+ 0.6- 980926 557 0.1- 0.7+ 981015 118 0.1+ 0.2-
980925 046 0.1- 0.1+ 980926 557 0.0 0.6+ 981022 587 0.0 0.2-
980925 046 0.0 0.1+ 980926 557 0.0 0.5+ 981022 587 0.1- 0.1+
980925 046 0.1+ 0.1- 980927 046 0.5- 0.5- 981022 587 0.4- 0.6-
980925 046 0.1+ 0.3- 980927 046 0.2- 0.3+ 990220 711 1.4- 1.2+
980925 557 0.1- 0.0 980927 046 0.2- 0.3+ 990220 711 1.4- 0.4-
980925 557 0.1+ 0.1- 980927 046 0.1- 0.1+ 990222 711 0.1- 0.3-
980925 557 0.1- 0.1- 980930 046 0.2+ 0.8+ 990222 711 0.3+ 0.1-
980925 557 0.1+ 0.4- 980930 046 0.1- 0.3+ 990414 693 0.7+ 1.7-
980926 734 0.9+ 1.5+ 980930 046 0.6- 0.7+ 990414 693 0.3+ 0.9-
980926 734 1.0- 0.3+ 980930 046 0.7- 0.4+ 990414 693 0.0 0.8-
980926 734 (0.1- 2.1-) 980930 658 0.4- 0.2+ 010815 493 0.4- 0.3-
980926 704 1.1- 0.2- 980930 658 0.2- 0.2+ 010815 493 0.8- 0.2+
980926 704 0.6- 0.8- 980930 658 0.3- 0.0 010816 691 0.7+ 0.0
980926 704 0.0 0.5- 981002 402 0.7+ 0.3+ 010816 691 0.2+ 0.2+
980926 704 0.2+ 1.6- 981002 402 0.5+ 0.1+ 010816 691 0.3+ 0.1+
980926 704 0.1+ 0.6- 981002 402 0.9+ 0.2-
Ephemeris:
1998 SU27 a,e,i = 2.12, 0.59, 7 q = 0.8639
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2001 08 09 21 53.21 -00 28.6 0.914 1.904 162.0 9.5 21.2
2001 08 19 21 37.68 -00 30.6 0.826 1.826 167.1 7.1 20.8
2001 08 29 21 19.50 -00 55.9 0.761 1.746 160.5 11.1 20.7
2001 09 08 21 00.86 -01 41.0 0.719 1.664 148.5 18.5 20.7
2001 09 18 20 44.30 -02 38.1 0.697 1.580 135.6 26.4 20.8
2001 09 28 20 32.05 -03 37.4 0.687 1.494 123.2 34.1 20.9
2001 10 08 20 25.29 -04 30.2 0.685 1.407 112.0 41.2 20.9
2001 10 18 20 24.29 -05 10.9 0.682 1.320 102.1 47.5 21.0
2001 10 28 20 28.84 -05 36.2 0.675 1.234 93.4 53.5 21.0
2001 11 07 20 38.36 -05 44.8 0.659 1.150 85.9 59.2 20.9
2001 11 17 20 52.32 -05 37.3 0.630 1.071 79.5 65.2 20.9
2001 11 27 21 10.25 -05 15.8 0.589 0.999 73.9 71.6 20.8
2001 12 07 21 31.75 -04 45.8 0.535 0.938 69.1 78.8 20.7
2001 12 17 21 56.78 -04 17.4 0.468 0.893 65.0 86.7 20.6
2001 12 27 22 25.94 -04 06.7 0.393 0.868 61.6 94.9 20.5
2002 01 06 23 01.36 -04 38.7 0.315 0.866 59.3 102.5 20.3
2002 01 16 23 49.45 -06 28.1 0.239 0.887 59.5 107.1 20.0
2002 01 26 01 05.83 -10 13.6 0.176 0.928 66.3 103.7 19.3
2002 02 05 03 13.34 -14 47.3 0.142 0.986 85.9 85.9 18.1
2002 02 15 05 39.24 -14 40.5 0.159 1.056 111.4 60.6 17.7
2002 02 25 07 14.91 -11 08.2 0.218 1.134 127.0 44.2 18.1
2002 03 07 08 09.30 -07 56.9 0.300 1.217 133.2 36.5 18.7
2002 03 17 08 44.09 -05 37.0 0.398 1.303 134.0 33.3 19.4
2002 03 27 09 09.80 -03 59.8 0.509 1.390 131.9 32.3 20.0
2002 04 06 09 30.96 -02 56.5 0.632 1.477 128.1 32.2 20.6
2002 04 16 09 49.73 -02 20.4 0.767 1.563 123.4 32.4 21.2
2002 04 26 10 07.20 -02 07.0 0.913 1.647 118.2 32.6 21.7
Timothy B. Spahr (C) Copyright 2001 MPC M.P.E.C. 2001-Q05
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