MPEC 2004-J73 : COMET P/2004 HC18 (LINEAR)
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M.P.E.C. 2004-J73 Issued 2004 May 15, 14:55 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
COMET P/2004 HC18 (LINEAR)
Observations:
PK04H18C C2004 05 11.86310 15 07 42.95 -07 12 39.8 17.3 N EJ073104
PK04H18C C2004 05 11.86701 15 07 42.86 -07 12 32.8 17.7 N EJ073104
PK04H18C C2004 05 11.87309 15 07 42.79 -07 12 21.3 17.6 N EJ073104
PK04H18C C2004 05 11.87812 15 07 42.70 -07 12 12.0 17.1 N EJ073104
PK04H18C C2004 05 13.26427 15 07 23.77 -06 29 10.3 16.7 T EJ073699
PK04H18C C2004 05 13.27775 15 07 23.54 -06 28 45.3 EJ073699
PK04H18C C2004 05 13.29128 15 07 23.32 -06 28 19.8 EJ073699
PK04H18C C2004 05 13.30480 15 07 23.06 -06 27 55.2 EJ073699
PK04H18C C2004 05 14.25089 15 07 10.65 -05 58 46.5 17.9 T EJ073704
PK04H18C C2004 05 14.26068 15 07 10.46 -05 58 27.9 18.0 T EJ073704
PK04H18C C2004 05 14.27021 15 07 10.30 -05 58 10.7 17.8 T EJ073704
PK04H18C C2004 05 14.27971 15 07 10.17 -05 57 53.6 17.9 T EJ073704
PK04H18C C2004 05 14.28917 15 07 09.99 -05 57 35.9 18.1 T EJ073704
PK04H18C C2004 05 14.47015 15 07 07.42 -05 52 00.3 17.8 T EJ073608
PK04H18C C2004 05 14.48041 15 07 07.26 -05 51 41.3 17.8 T EJ073608
PK04H18C C2004 05 14.49069 15 07 07.08 -05 51 22.3 17.8 T EJ073608
PK04H18C C2004 05 14.58866 15 07 06.21 -05 48 23.2 17.1 T EJ073900
PK04H18C C2004 05 14.59740 15 07 06.10 -05 48 08.4 17.4 T EJ073900
PK04H18C C2004 05 14.60356 15 07 05.98 -05 47 57.0 17.1 T EJ073360
PK04H18C C2004 05 14.60757 15 07 05.93 -05 47 49.5 EJ073360
PK04H18C C2004 05 14.61156 15 07 05.86 -05 47 42.6 EJ073360
PK04H18C C2004 05 14.98758 15 07 00.97 -05 36 13.6 16.1 N EJ073213
PK04H18C C2004 05 14.98957 15 07 00.92 -05 36 10.6 16.3 N EJ073213
PK04H18C C2004 05 15.00234 15 07 00.82 -05 35 45.0 17.1 N EJ073J87
PK04H18C C2004 05 15.00381 15 07 00.70 -05 35 42.6 17.3 N EJ073J87
PK04H18C C2004 05 15.05853 15 06 59.71 -05 34 04.3 17.0 N EJ073118
PK04H18C C2004 05 15.05970 15 06 59.69 -05 34 02.6 17.0 N EJ073118
PK04H18C C2004 05 15.06087 15 06 59.64 -05 34 00.3 17.1 N EJ073118
Observer details:
104 San Marcello Pistoiese. Observers L. Tesi, A. Boattini, M. Tombelli,
G. Fagioli. Measurers G. Forti, L. Tesi, A. Boattini, M. Tombelli.
0.60-m f/4 reflector + CCD.
118 Modra. Observers S. Gajdos, J. Vilagi. 0.6-m f/5.5 reflector + CCD.
213 Observatorio Montcabre. Observer R. Naves. Measurer M. Campas. 0.30-m
f/6.6 Schmidt-Cassegrain + CCD.
360 Kuma Kogen. Observer A. Nakamura. 0.60-m f/5.8 Ritchey-Chretien + CCD.
608 Haleakala-NEAT/MSSS. Observers R. Bambery, M. Hicks, K. Lawrence,
E. Helin, P. Kervin, J. Africano, R. Maeda. 1.2-m reflector + CCD.
699 Lowell Observatory-LONEOS. Observer B. A. Skiff. 0.59-m LONEOS Schmidt
+ CCD.
704 Lincoln Laboratory ETS, New Mexico. Observers M. Blythe, F. Shelly,
M. Bezpalko, R. Huber, L. Manguso, D. Torres, R. Kracke, M. McCleary,
H. Stange, A. Milner. Measurers J. Stuart, R. Sayer, J. Evans, J. Kommers.
1.0-m f/2.15 reflector + CCD.
900 Moriyama. Observer Y. Ikari. 0.25-m f/6.3 Schmidt-Cassegrain + CCD.
J87 La Canada. Observer J. Lacruz. 0.30-m f/3.3 Schmidt-Cassegrain + CCD.
Orbital elements:
P/2004 HC18 (LINEAR)
T 2004 June 18.6490 TT MPC
q 1.711654 (2000.0) P Q
n 0.1511462 Peri. 30.8225 -0.3628062 +0.8965601
a 3.490369 Node 219.5614 -0.9154530 -0.3938576
e 0.509606 Incl. 23.5103 -0.1741191 +0.2026230
P 6.52
From 51 observations 2004 Apr. 17-May 15.
Ephemeris:
P/2004 HC18 (LINEAR)
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2
2004 05 15 15 07.01 -05 35.7 0.744 1.742 165.7 8.2 17.6
2004 05 25 15 05.41 -00 48.1 0.756 1.727 154.7 14.5 17.9
2004 06 04 15 05.62 +03 08.3 0.789 1.717 144.0 20.3 18.2
2004 06 14 15 08.31 +06 01.8 0.839 1.712 134.6 25.0 18.4
2004 06 24 15 13.79 +07 52.8 0.901 1.712 126.4 28.5 18.7
2004 07 04 15 22.03 +08 49.4 0.973 1.718 119.3 31.1 18.9
2004 07 14 15 32.76 +09 02.4 1.052 1.728 113.3 32.7 19.2
2004 07 24 15 45.70 +08 42.1 1.137 1.743 108.0 33.7 19.4
Brian G. Marsden (C) Copyright 2004 MPC M.P.E.C. 2004-J73
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