MPEC 2007-B30 : 2004 YR
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M.P.E.C. 2007-B30 Issued 2007 Jan. 22, 18:28 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
2004 YR
Revision to MPEC 2004-Y23
Additional Observations:
K04Y00R 2C2006 12 25.31749001 34 07.207-23 50 16.99 22.7 R EB030568
K04Y00R 2C2006 12 25.32477501 34 07.179-23 50 05.98 22.9 R EB030568
K04Y00R 2C2006 12 25.33212501 34 07.166-23 49 54.86 22.9 R EB030568
K04Y00R 2C2006 12 26.24642001 34 08.019-23 26 51.92 EB030568
K04Y00R 2C2006 12 26.25387801 34 08.025-23 26 40.73 23.5 R EB030568
Observer details:
568 Mauna Kea. Observer F. Bernardi. Measurers F. Bernardi, D. J. Tholen.
2.24-m University of Hawaii reflector + 2048 CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
061225 568 3.6+ 2.7+ 061226 568 3.6+ 2.7+ MPO 87643 -0.0052 day
Orbital elements:
2004 YR Earth MOID = 0.1855 AU
Epoch 2007 Apr. 10.0 TT = JDT 2454200.5 MPC
M 336.58981 (2000.0) P Q
n 0.43547430 Peri. 65.74728 -0.83474562 -0.24366243
a 1.7238297 Node 96.93392 +0.10610144 -0.95113385
e 0.4223101 Incl. 29.82998 +0.54031679 -0.18966554
P 2.26 H 20.3 G 0.15 U 1
Residuals in seconds of arc
041218 704 0.2+ 0.2- 041221 246 0.5+ 0.2+ 050102 J95 0.2- 0.1-
041218 704 0.7+ 0.8+ 041221 246 0.7+ 0.4+ 050102 932 0.0 0.3-
041218 704 0.7- 0.7- 041221 246 0.3+ 0.3- 050102 J95 0.1- 0.1-
041218 704 0.7+ 0.4+ 041221 246 0.5+ 0.0 050102 932 0.2- 0.1+
041219 941 0.3+ 0.0 041221 246 0.3+ 0.2- 050102 J95 0.5- 0.4-
041219 941 0.4+ 0.2+ 041221 246 0.1+ 0.5+ 050103 185 0.6- 0.1+
041219 941 0.6+ 0.0 041221 012 0.8- 1.1- 050103 185 0.5- 0.1+
041219 941 0.5+ 0.0 041221 012 0.2+ 0.6- 050103 185 0.6- 0.2-
041219 941 0.4+ 0.1+ 041221 012 1.1+ 1.3+ 050104 560 0.6- 1.5+
041219 734 1.4- 1.1+ 041221 012 0.2+ 0.5+ 050104 560 0.3- 1.3+
041219 734 0.4- 1.8- 041221 012 0.9+ 0.3+ 050104 560 0.1- 1.0+
041219 734 1.7+ 1.0+ 041221 704 0.0 0.4+ 050108 939 0.0 0.2+
041219 704 0.1- 0.5- 041221 704 0.5+ 0.8+ 050108 939 0.3+ 0.1+
041219 704 0.3+ 0.3- 041221 704 1.5+ 0.5- 050114 151 1.1+ 0.4+
041219 854 0.3- 0.5+ 041221 704 0.4+ 0.5+ 050114 151 0.2- 0.7+
041219 H06 0.2+ 0.3- 041221 704 1.2+ 0.4- 050114 151 1.1- 0.4+
041219 854 0.3- 0.3+ 041225 448 0.1+ 0.1- 050116 H41 0.8+ 1.3+
041219 G96 0.1- 0.5- 041225 448 0.3+ 0.0 050116 H41 0.3+ 0.3-
041219 704 0.4+ 0.7- 041225 448 0.0 0.1- 050116 H41 0.6+ 1.5+
041219 H06 0.1+ 0.1- 041231 952 0.0 0.6- 050407 696 1.2+ 0.3+
041219 H06 0.5+ 0.1- 041231 952 0.0 0.6- 050407 696 0.4- 0.5-
041219 854 0.0 0.3- 041231 952 0.0 0.4- 050513 673 0.6+ 1.1+
041219 G96 0.2- 0.5- 041231 952 0.1- 0.6- 050513 673 1.3+ 1.5+
041219 704 0.2+ 0.8- 041231 952 0.1+ 0.5- 050513 673 0.2+ 0.5+
041219 G96 0.0 0.1+ 041231 H06 0.3+ 0.1- 050514 673 0.2- 0.4+
041219 704 0.2+ 0.8- 041231 H06 0.0 0.3+ 050514 673 0.0 0.0
041219 G96 0.3- 0.5- 041231 H06 0.4- 0.1+ 050514 673 0.4+ 1.4+
041219 474 0.8+ 0.5+ 041231 448 0.1+ 0.4- 050613 G96 0.0 0.5+
041219 474 0.1+ 0.3+ 041231 448 0.3- 0.5+ 050613 G96 0.1- 0.5+
041219 474 0.4+ 0.2- 041231 448 0.0 0.1+ 050613 G96 0.1- 0.6+
041220 704 0.5+ 1.1+ 041231 448 0.2- 0.4+ 050613 G96 0.1- 0.6+
041220 704 0.3+ 0.0 041231 649 0.1- 0.0 050704 691 0.2+ 0.0
041220 704 0.1+ 0.1+ 041231 649 0.1- 0.1+ 050704 691 0.6+ 0.1-
041220 704 0.5+ 0.7+ 041231 649 0.3- 0.3- 050704 691 0.2+ 0.6+
041220 704 0.1+ 0.3+ 041231 649 0.1- 0.1+ 061225 568 0.0 0.0
041220 F65 0.3- 0.6+ 050101 H06 0.6- 0.1+ 061225 568 0.1- 0.0
041220 F65 0.5- 0.2+ 050101 H06 0.3- 0.3- 061225 568 0.0 0.0
041220 F65 0.5- 0.6+ 050101 H06 0.0 0.2- 061226 568 0.1- 0.2+
041220 F65 0.7- 0.2+ 050102 932 0.1+ 0.1- 061226 568 0.0 0.1+
Ephemeris:
2004 YR a,e,i = 1.72, 0.42, 30 q = 0.9958
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2007 01 20 01 45.81 -12 28.0 1.457 1.625 81.0 36.7 23.7
2007 01 25 01 50.47 -10 10.2 1.477 1.596 78.0 37.1 23.7
2007 01 30 01 55.79 -07 51.7 1.496 1.567 75.2 37.4 23.7
2007 02 04 02 01.73 -05 32.8 1.513 1.537 72.4 37.7 23.7
2007 02 09 02 08.26 -03 13.5 1.530 1.507 69.8 37.9 23.6
2007 02 14 02 15.36 -00 54.0 1.545 1.476 67.2 38.1 23.6
2007 02 19 02 23.02 +01 25.5 1.559 1.446 64.7 38.2 23.6
2007 02 24 02 31.24 +03 45.1 1.571 1.415 62.3 38.2 23.6
2007 03 01 02 40.00 +06 04.4 1.582 1.385 60.0 38.3 23.5
2007 03 06 02 49.31 +08 23.5 1.591 1.354 57.8 38.3 23.5
2007 03 11 02 59.20 +10 42.0 1.598 1.324 55.8 38.3 23.5
Timothy B. Spahr (C) Copyright 2007 MPC M.P.E.C. 2007-B30
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