MPEC 2004-Y57 : COMET P/2004 Y1 (CHRISTENSEN)
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M.P.E.C. 2004-Y57 Issued 2004 Dec. 24, 15:52 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 Brinson 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 Y1 (CHRISTENSEN)
Observations:
PK04Y010 C1998 01 24.48614 10 14 11.47 +32 10 18.0 17.0 N EY057566
PK04Y010 C1998 01 24.49612 10 14 10.92 +32 10 25.2 17.1 N EY057566
PK04Y010 C1998 01 24.50694 10 14 10.37 +32 10 32.5 17.0 N EY057566
PK04Y010 C1998 04 18.21801 09 34 04.68 +33 15 34.0 18.6 N EY057699
PK04Y010 C1998 04 18.22794 09 34 04.89 +33 15 29.8 EY057699
PK04Y010 C1998 04 18.23787 09 34 05.13 +33 15 25.0 EY057699
PK04Y010 C2004 10 19.42181 09 41 18.93 +20 37 17.4 18.4 N EY057704
PK04Y010 C2004 10 19.43365 09 41 20.33 +20 37 15.7 18.7 N EY057704
PK04Y010 C2004 10 19.44729 09 41 21.88 +20 37 14.9 18.4 N EY057704
PK04Y010 C2004 10 21.44759 09 45 09.63 +20 34 08.0 18.3 N EY057704
PK04Y010 C2004 10 21.45926 09 45 10.83 +20 34 06.8 18.2 N EY057704
PK04Y010 C2004 10 21.47100 09 45 12.24 +20 34 06.6 18.8 N EY057704
PK04Y010 C2004 10 21.48268 09 45 13.44 +20 34 05.1 18.5 N EY057704
PK04Y010 C2004 10 21.49435 09 45 14.70 +20 34 04.0 18.5 N EY057704
PK04Y010 C2004 11 19.44557 10 32 09.25 +20 29 29.7 18.4 N EY057704
PK04Y010 C2004 11 19.45804 10 32 10.28 +20 29 31.4 18.7 N EY057704
PK04Y010 C2004 11 19.47049 10 32 11.26 +20 29 33.1 18.5 N EY057704
PK04Y010 C2004 12 23.65462 11 03 25.73 +23 09 50.3 EY057D83
PK04Y010 C2004 12 23.65646 11 03 26.00 +23 09 50.9 EY057D83
PK04Y010 C2004 12 23.66037 11 03 26.03 +23 09 52.7 EY057D83
PK04Y010 C2004 12 23.66772 11 03 26.24 +23 09 55.2 17.4 T EY057D83
PK04Y010 C2004 12 23.71823 11 03 27.38 +23 10 20.8 EY057349
PK04Y010 C2004 12 23.72045 11 03 27.45 +23 10 22.1 EY057349
PK04Y010 C2004 12 23.72267 11 03 27.52 +23 10 23.3 17.0 T EY057349
PK04Y010 C2004 12 24.09235 11 03 37.06 +23 13 20.6 16.6 N EY057A61
PK04Y010 C2004 12 24.09742 11 03 37.19 +23 13 21.7 16.7 N EY057A61
PK04Y010 C2004 12 24.10257 11 03 37.35 +23 13 24.3 16.5 N EY057A61
Observer details:
349 Ageo. Observer K. Kadota. 0.25-m f/5.0 reflector + CCD.
566 Haleakala-NEAT/GEODSS. Observers E. F. Helin, S. Pravdo, K. J. Lawrence,
D. L. Rabinowitz for the NEAT team. 1.0-m f/2.2 GEODSS telescope + CCD.
699 Lowell Observatory-LONEOS. Observers C. A. Onken, B. W. Koehn. Measurers
B. W. Koehn, E. Bowell. 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.
A61 Tortona. Observers F. Fratev, E. Mihaylova. Measurer F. Fratev. 0.25-m
f/4.7 reflector + CCD.
D83 Miwa. Observer Y. Ohshima. 0.25-m f/5 reflector + CCD.
Orbital elements:
P/2004 Y1 (Christensen)
Epoch 1997 July 11.0 TT = JDT 2450640.5
T 1997 July 22.17978 TT MPC
q 1.6427053 (2000.0) P Q
n 0.14279438 Peri. 325.29560 +0.56419430 -0.77685115
a 3.6251722 Node 88.76634 +0.80663048 +0.44637132
e 0.5468615 Incl. 16.24137 +0.17615922 +0.44413392
P 6.90
Epoch 2004 June 4.0 TT = JDT 2453160.5
T 2004 June 21.89339 TT MPC
q 1.6457463 (2000.0) P Q
n 0.14260453 Peri. 325.45234 +0.56315660 -0.77760349
a 3.6283889 Node 88.68929 +0.80715649 +0.44511988
e 0.5464251 Incl. 16.24191 +0.17706793 +0.44407331
P 6.91
Residuals in seconds of arc
980124 566 0.0 1.0- 041209 704 0.8- 0.1+ 041222 673 1.2+ 0.4+
980124 566 0.3- 0.7- 041209 704 0.8- 0.3+ 041222 703 1.1- 0.2-
980124 566 0.1- 1.0- 041209 704 0.3+ 0.2- 041222 673 1.5+ 0.7+
980418 699 0.3+ 0.1+ 041209 704 (2.2+ 2.8+) 041222 703 1.2- 0.2+
980418 699 0.4- 0.0 041215 704 0.1+ 0.0 041222 703 1.2- 0.0
980418 699 0.7- 0.7- 041215 704 0.5- 0.6- 041222 703 1.5- 0.6-
041019 704 0.2- 0.2- 041215 704 0.5+ 0.0 041223 D83 1.6- 0.2+
041019 704 0.5+ 0.8- 041215 704 0.4+ 0.5+ 041223 D83 1.5+ 0.1-
041019 704 0.4+ 0.4- 041215 704 0.3- 1.0+ 041223 D83 0.5+ 0.2-
041021 704 0.8+ 0.2+ 041221 703 0.5- 0.1- 041223 D83 0.9+ 1.3-
041021 704 0.7- 0.1- 041221 703 1.0- 0.4- 041223 349 0.8- 0.2-
041021 704 0.7+ 0.7+ 041221 703 0.9- 0.4- 041223 349 0.5- 0.1+
041021 704 0.8- 0.2+ 041221 703 1.8- 0.6- 041223 349 0.3- 0.2+
041021 704 1.5- 0.1+ 041222 673 1.7+ 1.6+ 041224 A61 0.2+ 0.8+
041119 704 0.4- 0.8- 041222 673 1.7+ 1.3+ 041224 A61 0.3+ 0.5-
041119 704 0.2+ 0.4- 041222 673 1.5+ 1.5+ 041224 A61 0.8+ 0.4-
041119 704 0.2+ 0.0 041222 673 1.8+ 1.1+
041209 704 0.3+ 0.3- 041222 673 1.6+ 0.8+
Ephemeris:
P/2004 Y1 (Christensen)
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2
2004 12 21 11 02.16 +22 49.4 1.815 2.352 110.9 23.0 16.0
2004 12 31 11 05.79 +24 13.1 1.762 2.410 120.1 20.7 16.1
2005 01 10 11 06.19 +25 52.7 1.721 2.469 129.8 17.8 16.1
2005 01 20 11 03.28 +27 42.2 1.697 2.528 139.6 14.6 16.2
2005 01 30 10 57.34 +29 32.2 1.694 2.587 148.7 11.4 16.3
2005 02 09 10 49.00 +31 11.8 1.715 2.646 155.7 8.8 16.4
2005 02 19 10 39.30 +32 31.0 1.763 2.704 157.8 8.0 16.6
2005 03 01 10 29.50 +33 22.8 1.838 2.763 153.9 9.1 16.7
Brian G. Marsden (C) Copyright 2004 MPC M.P.E.C. 2004-Y57
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