MPEC 1999-V46: 1998 UR43
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M.P.E.C. 1999-V46 Issued 1999 Nov. 14, 19:37 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.
BMARSDEN@CFA.HARVARD.EDU or GWILLIAMS@CFA.HARVARD.EDU
URL http://cfa-www.harvard.edu/iau/mpc.html ISSN 1523-6714
1998 UR43
Revision to MPEC 1998-X05
Observations:
J98U43R 5C1999 10 10.49534 02 30 04.54 +12 14 19.2 22.9 R 568
J98U43R 5C1999 10 10.56097 02 30 04.18 +12 14 18.1 23.1 R 568
J98U43R 5C1999 11 09.47782 02 27 04.96 +12 01 04.4 23.0 R 568
J98U43R 5C1999 11 09.50362 02 27 04.78 +12 01 03.9 22.9 R 568
Observer details:
568 Mauna Kea. Observer S. Sheppard. 2.2-m University of Hawaii reflector
+ CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc and reference
991010 568 16.5- 2.7- 991109 568 22.7- 4.2- MPC 33762
Orbital elements:
1998 UR43
Epoch 1999 Aug. 10.0 TT = JDT 2451400.5 Marsden
M 340.17003 (2000.0) P Q
n 0.00392852 Peri. 15.28716 +0.35738276 -0.92584609
a 39.7786487 Node 53.92505 +0.84016296 +0.26125834
e 0.2212500 Incl. 8.74097 +0.40792617 +0.27304414
P 251 H 7.7 G 0.15 U 6
Residuals in seconds of arc
981022 695 0.3+ 0.6- 981217 950 0.2- 0.0 991010 568 0.1+ 0.5+
981022 695 0.1+ 0.3- 981217 950 0.1+ 0.1- 991109 568 0.1+ 0.3-
981118 695 0.5- 0.3+ 981218 950 0.1- 0.1+ 991109 568 0.2- 0.1-
981118 695 0.4- 0.5+ 981218 950 0.4+ 0.2+
981118 695 0.3+ 0.1- 991010 568 0.1- 0.1-
Ephemeris:
1998 UR43 a,e,i = 39.78, 0.22, 9 q = 30.978
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1999 11 08 02 27.23 +12 01.7 30.805 31.789 172.8 0.2 22.7
1999 11 18 02 26.23 +11 57.5 30.840 31.786 162.8 0.5 22.8
1999 11 28 02 25.30 +11 53.8 30.904 31.782 152.5 0.8 22.8
1999 12 08 02 24.47 +11 50.7 30.995 31.779 142.2 1.1 22.8
1999 12 18 02 23.77 +11 48.4 31.111 31.776 131.9 1.3 22.9
1999 12 28 02 23.24 +11 46.9 31.247 31.773 121.6 1.5 22.9
2000 01 07 02 22.90 +11 46.5 31.399 31.770 111.3 1.7 22.9
2000 01 17 02 22.75 +11 47.1 31.563 31.767 101.1 1.7 22.9
2000 01 27 02 22.82 +11 48.8 31.732 31.763 91.0 1.8 22.9
2000 02 06 02 23.10 +11 51.5 31.902 31.760 80.9 1.8 22.9
2000 02 16 02 23.58 +11 55.2 32.067 31.757 70.9 1.7 23.0
2000 02 26 02 24.26 +11 59.9 32.222 31.754 61.0 1.6 23.0
2000 03 07 02 25.11 +12 05.3 32.363 31.751 51.2 1.4 22.9
2000 03 17 02 26.12 +12 11.3 32.486 31.748 41.5 1.2 22.9
2000 03 27 02 27.25 +12 17.9 32.587 31.745 31.9 1.0 22.9
Brian G. Marsden (C) Copyright 1999 MPC M.P.E.C. 1999-V46
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