MPEC 2003-T05 : 2001 HG31
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M.P.E.C. 2003-T05 Issued 2003 Oct. 2, 02:47 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 Steven and Michele Kirsch Foundation
Prepared using the Tamkin Foundation Computer Network
MPC@CFA.HARVARD.EDU
URL http://cfa-www.harvard.edu/iau/mpc.html ISSN 1523-6714
2001 HG31
Revision to MPEC 2001-H48
Additional Observations:
K01H31G C2003 08 04.57321 21 01 57.80 -25 55 06.8 19.3 R 474
K01H31G C2003 08 04.57650 21 01 57.65 -25 55 07.0 19.5 R 474
K01H31G C2003 08 04.58005 21 01 57.47 -25 55 08.2 19.7 R 474
K01H31G C2003 08 04.58422 21 01 57.16 -25 55 10.4 19.1 R 474
K01H31G C2003 08 04.58906 21 01 56.89 -25 55 10.7 19.3 R 474
K01H31G 1C2003 09 26.17619 20 22 39.78 -27 01 58.5 696
K01H31G 1C2003 09 26.19550 20 22 39.51 -27 01 56.7 696
Observer details:
474 Mount John Observatory, Lake Tekapo. Observers A. C. Gilmore,
P. M. Kilmartin. 1.0-m f/7.7 reflector + CCD.
696 Whipple Observatory, Mt. Hopkins. Observer C. W. Hergenrother. Measurer
T. B. Spahr. 1.2-m reflector + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
030804 474 28.3+ 9.5+ 030926 696 23.4+ 6.2+ MPO 30455 -0.072 day
Orbital elements:
2001 HG31
Epoch 2003 Dec. 27.0 TT = JDT 2453000.5 MPC
M 282.61435 (2000.0) P Q
n 0.23663357 Peri. 66.86830 -0.23766187 -0.96917882
a 2.5887204 Node 37.07030 +0.84718490 -0.23949426
e 0.5278846 Incl. 6.17871 +0.47517848 -0.05774868
P 4.17 H 15.8 G 0.15 U 3
Residuals in seconds of arc
010222 704 0.3+ 0.2- 010426 118 0.4+ 1.0- 010429 118 0.4+ 0.5-
010222 704 0.6+ 0.6- 010426 118 0.1+ 0.3- 010429 118 0.3+ 0.3-
010222 704 0.8- 0.5- 010426 118 0.2- 0.8- 010430 649 1.1- 0.6-
010222 704 0.3+ 1.0+ 010426 046 0.3- 0.4- 010430 704 1.2+ 0.8+
010414 608 0.6- 0.3+ 010426 046 0.5- 0.3+ 010430 926 0.4+ 0.3+
010414 608 0.9- 1.1+ 010426 046 0.3- 0.2+ 010430 926 0.1- 0.7+
010414 608 0.0 0.8+ 010426 046 0.1+ 0.4+ 010430 649 1.6+ 1.1+
010424 291 0.8+ 0.1+ 010426 046 0.7- 0.2- 010430 926 0.3+ 0.5+
010424 291 0.9+ 0.1+ 010426 046 0.2+ 0.1- 010430 704 0.0 0.4+
010424 291 0.9+ 0.0 010427 704 0.2- 0.4+ 010430 704 0.2- 0.7-
010424 608 0.3+ 1.6+ 010427 704 0.2+ 0.8+ 010430 649 1.5- 1.6-
010424 608 0.3+ 1.5+ 010427 704 0.9- 0.9- 010430 704 0.7+ 0.1-
010424 608 0.2+ 1.3+ 010427 704 0.3+ 0.3- 010503 926 0.6+ 0.1+
010424 046 0.2- 0.2- 010427 691 0.2- 0.3- 010503 926 0.4+ 0.2+
010424 046 0.2+ 0.1- 010427 691 0.2- 0.3- 010526 291 0.4- 0.3+
010424 046 0.5+ 0.7- 010427 691 0.4- 0.3- 010526 291 0.7- 0.5+
010424 046 0.0 0.2+ 010428 651 0.9- 0.1- 010526 291 0.6- 0.4+
010424 557 0.1- 0.4- 010428 651 1.2- 0.9- 010704 413 0.7- 0.2-
010424 557 0.1- 0.3- 010428 651 (2.3+ 1.1+) 010704 413 0.5+ 0.1-
010424 557 0.4- 0.5- 010428 926 0.3+ 0.2+ 010704 413 0.3+ 0.1+
010425 918 1.9- 0.2- 010428 926 0.4+ 0.2- 030804 474 0.7- 0.0
010425 918 0.1+ 0.2- 010428 926 0.4+ 0.3+ 030804 474 0.0 0.6+
010425 918 0.2+ 0.3- 010429 926 0.3+ 0.3+ 030804 474 0.5+ 0.2+
010426 649 0.4+ 0.4- 010429 673 (0.6- 2.1-) 030804 474 0.2- 1.0-
010426 649 0.0 0.2+ 010429 926 0.3+ 0.1- 030804 474 0.1+ 0.1-
010426 649 0.2- 0.1+ 010429 673 (1.3- 2.1-) 030926 696 0.1- 0.2+
010426 422 0.2- 0.0 010429 926 0.4+ 0.4+ 030926 696 0.4+ 0.2+
010426 422 0.2- 0.1- 010429 673 1.1- 2.0-
010426 422 0.4+ 0.3+ 010429 118 1.0+ 0.3-
Ephemeris:
2001 HG31 a,e,i = 2.59, 0.53, 6 q = 1.2222
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2003 09 28 20 22.26 -26 59.1 2.775 3.349 116.8 15.5 21.5
2003 10 08 20 21.49 -26 38.5 2.879 3.312 107.0 16.8 21.6
2003 10 18 20 23.03 -26 11.0 2.989 3.274 97.7 17.6 21.7
2003 10 28 20 26.72 -25 37.3 3.101 3.235 88.7 17.9 21.7
2003 11 07 20 32.35 -24 58.0 3.211 3.195 80.2 17.8 21.8
2003 11 17 20 39.66 -24 13.5 3.316 3.153 71.9 17.3 21.8
2003 11 27 20 48.44 -23 23.7 3.413 3.110 64.0 16.6 21.8
Kyle E. Smalley (C) Copyright 2003 MPC M.P.E.C. 2003-T05
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