MPEC 2002-C101: 1998 HE3
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M.P.E.C. 2002-C101 Issued 2002 Feb. 15, 02:30 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 HE3
Revision to MPEC 1998-H17
Observations:
J98H03E C2002 02 13.41240 13 14 15.19 +11 03 19.0 696
J98H03E C2002 02 13.41435 13 14 14.69 +11 03 23.0 696
J98H03E C2002 02 13.43517 13 14 08.39 +11 04 04.9 19.3 R 649
J98H03E C2002 02 13.43929 13 14 07.28 +11 04 14.0 19.4 R 649
J98H03E C2002 02 13.44340 13 14 06.15 +11 04 23.1 19.5 R 649
J98H03E C2002 02 14.30956 13 10 20.13 +11 36 40.8 19.5 R 649
J98H03E C2002 02 14.31465 13 10 18.74 +11 36 53.0 19.2 R 649
J98H03E C2002 02 14.31975 13 10 17.29 +11 37 04.9 19.0 R 649
Observer details:
649 Powell Observatory, Louisburg. Observers K. Smalley, R. Fredrick,
R. Trentman. 0.75-m Newtonian + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
020213 696 0.07- 0.08+ 020214 649 0.08- 0.08+ MPC 32075 +0.027 day
Orbital elements:
1998 HE3 PHA 0.003
Epoch 2001 Oct. 18.0 TT = JDT 2452200.5 MPC
M 332.71861 (2000.0) P Q
n 1.19659135 Peri. 308.94791 +0.99763259 -0.04930822
a 0.8786963 Node 53.92970 +0.06514615 +0.90089818
e 0.4405454 Incl. 3.39997 -0.02202715 +0.43122056
P 0.82 H 21.8 G 0.15 U 6
Residuals in seconds of arc
980421 683 0.4+ 0.3- 980424 118 0.4+ 0.5- 980505 700 (2.7+ 0.1+)
980421 683 1.0- 0.4+ 980424 046 0.0 0.2+ 980505 700 (2.5+ 0.2+)
980421 683 0.4- 0.8+ 980424 046 0.2+ 0.1- 980505 700 0.9- 0.1+
980421 683 1.0- 0.2+ 980424 118 0.4+ 0.3- 980505 683 0.1+ 0.2-
980421 683 0.4- 0.2+ 980424 046 0.7+ 0.3- 980505 683 0.1- 0.3+
980421 683 0.2- 0.4+ 980424 118 0.1+ 0.3- 980505 683 0.6+ 0.2+
980421 104 1.4- 0.9+ 980426 118 0.7- 0.3+ 980509 046 0.6+ 0.8+
980421 104 0.7- 0.8+ 980426 118 1.0- 0.4+ 980509 046 1.5+ 0.4+
980421 104 0.5+ 0.3+ 980427 683 0.5- 0.0 980509 046 0.6- 1.7+
980421 046 0.1- 0.2+ 980427 683 0.2+ 0.1+ 980509 046 0.3- 1.0+
980421 046 0.6- 0.3- 980427 683 0.4+ 0.1+ 980509 046 0.5+ 0.3+
980421 046 1.3- 0.2+ 980427 557 0.9- 0.0 980509 046 0.2+ 0.9+
980421 046 0.3- 0.4+ 980427 557 0.3- 0.6- 980511 683 1.4+ 0.3+
980421 046 0.3+ 0.5+ 980427 557 0.5+ 0.2- 980511 683 (2.1- 0.8+)
980422 557 0.7- 0.6+ 980428 360 0.4+ 0.0 980511 683 0.1- 0.9+
980422 557 0.0 0.3- 980428 360 0.2+ 0.2+ 980511 118 0.7- 1.1-
980422 557 1.5+ 0.4- 980428 360 0.3+ 0.1- 980511 118 1.1- 0.9-
980422 557 1.0- 0.2+ 980430 683 0.7- 0.0 980511 118 0.7+ 0.2-
980422 683 0.7+ 0.3+ 980430 683 1.9+ 0.7- 980511 118 0.8- 0.3+
980422 683 0.2- 0.0 980430 683 0.1+ 0.3+ 980511 046 0.3+ 0.3-
980422 683 0.1+ 0.2+ 980430 046 0.0 0.8- 980511 046 0.2+ 1.2-
980422 683 1.3+ 0.1- 980430 046 0.0 0.1- 980511 046 0.0 0.5-
980422 683 0.1- 0.1+ 980430 046 0.9- 0.8- 980511 046 0.8+ 0.2+
980422 557 0.1+ 0.2- 980430 046 0.5- 0.7- 980511 046 0.4- 0.9-
980422 557 1.0+ 0.3+ 980430 046 0.7- 0.2- 980512 046 0.0 0.2+
980423 118 0.1- 0.0 980501 557 0.7- 0.4- 980512 046 0.3+ 0.5+
980423 118 0.4+ 0.3- 980501 557 0.2- 0.7- 980512 046 0.5- 1.3+
980423 118 0.5+ 0.3- 980501 557 0.5- 0.3- 980512 046 0.2+ 0.7+
980423 046 0.5+ 0.3- 980502 700 (2.5+ 1.2+) 980512 046 0.2- 0.8+
980423 046 0.1- 0.5- 980502 700 (4.4+ 0.1-) 980512 046 0.0 1.0-
980423 046 0.8- 0.1+ 980502 700 0.7- 1.5- 980515 683 0.8- 0.6-
980423 683 0.3+ 0.3+ 980502 700 0.2+ 0.1- 980515 683 (3.8+ 0.5+)
980423 683 0.5- 0.3- 980503 683 1.6- 0.6+ 980515 683 (5.5- 1.0-)
980423 683 0.2+ 0.6+ 980503 683 0.7- 0.5+ 020213 696 0.4- 0.8+
980423 704 1.8+ 1.0- 980503 683 1.9- 1.2+ 020213 696 0.1+ 0.4+
980423 704 (2.1+ 1.5-) 980503 557 0.1+ 0.8- 020213 649 0.0 0.0
980423 704 (2.2+ 2.1-) 980503 557 0.1+ 0.7- 020213 649 0.2+ 0.0
980423 704 0.6+ 0.0 980503 557 0.6+ 0.3- 020213 649 0.0 0.1-
980424 557 0.5+ 0.1+ 980504 402 1.0+ 0.3- 020214 649 0.2+ 0.7-
980424 557 0.0 0.2- 980504 402 1.1+ 0.7- 020214 649 0.5+ 0.0
980424 046 0.4+ 0.2+ 980504 402 0.4+ 0.5- 020214 649 0.1+ 0.3+
Ephemeris:
1998 HE3 a,e,i = 0.88, 0.44, 3 q = 0.4916
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2002 02 15 13 07.21 +12 02.9 0.221 1.149 132.7 39.1 20.4
2002 02 20 12 42.60 +15 11.8 0.217 1.170 143.3 30.3 20.1
2002 02 25 12 15.00 +18 10.5 0.218 1.189 153.4 21.9 19.9
2002 03 02 11 46.01 +20 41.7 0.225 1.206 161.1 15.4 19.8
2002 03 07 11 17.66 +22 33.5 0.237 1.221 162.8 13.9 19.9
2002 03 12 10 51.92 +23 42.7 0.254 1.233 158.0 17.6 20.2
2002 03 17 10 30.10 +24 14.2 0.277 1.244 150.8 23.0 20.6
2002 03 22 10 12.69 +24 16.9 0.303 1.252 143.3 28.4 20.9
2002 03 27 09 59.52 +23 59.6 0.332 1.259 136.4 33.2 21.3
2002 04 01 09 50.10 +23 29.4 0.363 1.263 130.0 37.3 21.6
2002 04 06 09 43.82 +22 51.1 0.395 1.265 124.1 40.9 21.9
Brian G. Marsden (C) Copyright 2002 MPC M.P.E.C. 2002-C101
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