MPEC 1999-Y32 : 1998 XE12
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M.P.E.C. 1999-Y32 Issued 1999 Dec. 30, 22:31 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
BMARSDEN@CFA.HARVARD.EDU or GWILLIAMS@CFA.HARVARD.EDU
URL http://cfa-www.harvard.edu/iau/mpc.html ISSN 1523-6714
1998 XE12
Revision to MPEC 1998-Y07
Observations:
J98X12E C1999 12 29.99648 07 01 02.69 +22 48 34.4 046
J98X12E C1999 12 29.99787 07 01 02.27 +22 48 34.6 046
J98X12E C1999 12 29.99936 07 01 01.93 +22 48 33.7 17.9 R 046
J98X12E C1999 12 30.00071 07 01 01.49 +22 48 33.2 046
J98X12E C1999 12 30.00426 07 01 00.38 +22 48 32.8 046
J98X12E C1999 12 30.00580 07 00 59.89 +22 48 32.4 046
J98X12E C1999 12 30.00704 07 00 59.59 +22 48 32.5 046
J98X12E C1999 12 30.00882 07 00 59.02 +22 48 31.6 046
J98X12E C1999 12 30.00985 07 00 58.78 +22 48 31.3 046
J98X12E C1999 12 30.01094 07 00 58.38 +22 48 30.8 18.1 R 046
J98X12E C1999 12 30.88933 06 56 35.43 +22 44 44.0 18.1 R 046
J98X12E C1999 12 30.89076 06 56 35.06 +22 44 43.5 046
J98X12E C1999 12 30.89486 06 56 33.77 +22 44 41.5 046
J98X12E C1999 12 30.89576 06 56 33.52 +22 44 40.7 046
J98X12E C1999 12 30.89657 06 56 33.28 +22 44 42.7 046
J98X12E C1999 12 30.89837 06 56 32.71 +22 44 41.9 046
J98X12E C1999 12 30.90495 06 56 30.61 +22 44 40.2 046
J98X12E C1999 12 30.90583 06 56 30.43 +22 44 39.9 046
Observer details:
046 Klet. Observers J. Ticha, M. Tichy. 0.57-m f/5.2 reflector + CCD.
Orbital elements:
1998 XE12
Id. J. Ticha (1999 observations)
Epoch 2000 Feb. 26.0 TT = JDT 2451600.5 Williams
M 279.64331 (2000.0) P Q
n 1.19757439 Peri. 353.02301 +0.05823914 +0.97177151
a 0.8782154 Node 280.12811 -0.90433748 -0.04564135
e 0.7391248 Incl. 13.42909 -0.42282611 +0.23146707
P 0.82 H 18.9 G 0.15 U 6
Residuals in seconds of arc
981214 704 0.6+ 0.8+ 981217 402 0.1- 0.2+ 991229 046 1.0- 0.4+
981214 704 1.2+ 0.4+ 981217 402 0.0 0.6- 991229 046 0.5+ 0.2-
981214 704 0.1+ 1.6- 981217 402 0.7+ 0.0 991230 046 0.1+ 0.3-
981214 704 1.2+ 0.3- 981217 402 0.1+ 0.4- 991230 046 0.4- 0.1+
981214 704 (3.1- 3.3+) 981218 402 0.1+ 0.5- 991230 046 0.7- 0.1+
981216 557 0.1- 0.2- 981218 402 0.9- 1.4- 991230 046 0.4+ 0.5+
981216 557 0.1+ 0.1- 981218 402 0.1- 0.2- 991230 046 0.1- 0.1+
981216 704 1.4- 0.0 981219 658 1.1- 0.6+ 991230 046 0.9+ 0.0
981216 704 0.1+ 1.7- 981219 658 0.2- 0.0 991230 046 0.0 0.2-
981216 704 1.3- 0.8+ 981219 658 0.5- 0.8+ 991230 046 0.4- 0.1+
981216 704 0.9- 1.0- 981219 587 0.1+ 0.2- 991230 046 0.6+ 0.0
981216 704 0.4- 0.8+ 981219 587 0.6- 0.5- 991230 046 0.1+ 1.0-
981216 402 0.3- 0.2- 981219 587 0.1+ 0.8+ 991230 046 0.4+ 1.5-
981216 402 0.9+ 0.1- 981224 402 0.7+ 0.5+ 991230 046 0.6+ 0.7+
981216 402 0.7+ 0.1- 981224 402 0.4- 0.5+ 991230 046 0.3+ 0.4+
981216 402 0.5- 0.3+ 981224 402 0.1- 0.9- 991230 046 0.8- 0.4+
981217 684 0.2+ 0.4+ 990108 658 0.0 0.4- 991230 046 0.4+ 0.3+
981217 684 0.0 1.3+ 990108 658 0.8+ 1.5+
981217 684 1.1+ 1.4+ 991229 046 1.0- 0.2-
Ephemeris:
1998 XE12 a,e,i = 0.88, 0.74, 13 q = 0.2291
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1999 12 28 07 10.79 +22 55.5 0.524 1.502 169.5 6.8 18.9
2000 01 02 06 45.83 +22 33.8 0.506 1.490 179.4 0.4 18.4
2000 01 07 06 19.76 +21 55.7 0.498 1.475 168.5 7.6 18.8
2000 01 12 05 54.17 +21 02.6 0.500 1.458 157.4 15.0 19.0
2000 01 17 05 30.51 +19 59.1 0.511 1.438 146.7 22.0 19.3
2000 01 22 05 09.76 +18 51.6 0.529 1.416 136.7 28.5 19.5
2000 01 27 04 52.32 +17 45.7 0.553 1.391 127.4 34.2 19.8
2000 02 01 04 38.21 +16 45.3 0.581 1.364 118.8 39.3 20.0
2000 02 06 04 27.17 +15 52.4 0.611 1.333 111.0 43.7 20.1
2000 02 11 04 18.81 +15 07.4 0.642 1.300 103.8 47.5 20.3
2000 02 16 04 12.71 +14 30.0 0.673 1.264 97.2 50.8 20.4
2000 02 21 04 08.44 +13 59.0 0.702 1.224 91.1 53.9 20.5
2000 02 26 04 05.64 +13 33.4 0.729 1.181 85.4 56.7 20.6
2000 03 02 04 03.98 +13 12.0 0.752 1.135 79.9 59.3 20.7
2000 03 07 04 03.16 +12 53.6 0.771 1.085 74.7 62.0 20.7
2000 03 12 04 02.88 +12 37.3 0.785 1.030 69.7 64.7 20.7
2000 03 17 04 02.81 +12 21.8 0.794 0.972 64.7 67.7 20.7
Gareth V. Williams (C) Copyright 1999 MPC M.P.E.C. 1999-Y32
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