MPEC 2009-B60 : 2008 YT30
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M.P.E.C. 2009-B60 Issued 2009 Jan. 27, 02:22 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://www.cfa.harvard.edu/iau/mpc.html ISSN 1523-6714
2008 YT30
Revision to MPEC 2008-Y85
Additional Observations:
K08Y30T C2001 12 24.52243 09 13 45.22 +01 18 02.4 19.4 R EB060608
K08Y30T C2001 12 24.53286 09 13 44.95 +01 17 44.0 19.5 R EB060608
K08Y30T C2001 12 24.54355 09 13 44.67 +01 17 24.1 19.6 R EB060608
K08Y30T C2002 01 11.48168 08 55 55.46 -08 46 50.9 19.0 R EB060644
K08Y30T C2002 01 11.51792 08 55 51.60 -08 48 10.1 18.8 R EB060644
K08Y30T C2002 01 11.55455 08 55 47.79 -08 49 29.4 18.8 R EB060644
Observer details:
608 Haleakala-NEAT/MSSS. Observers R. Bambery, E. Helin, S. Pravdo, M. Hicks,
K. Lawrence, P. Kervin. Measurer R. Matson. 1.2-m reflector + CCD.
644 Palomar Mountain/NEAT. Observers E. F. Helin, S. Pravdo, K. Lawrence,
K. Kuluhiwa, M. Hicks. Measurer R. Matson. 1.2-m Schmidt + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
011224 608 1.43+ 0.64- 020111 644 2.03+ 0.91- MPO151125 -0.60 day
Orbital elements:
2008 YT30 Earth MOID = 0.0728 AU
Epoch 2008 Nov. 30.0 TT = JDT 2454800.5 MPC
M 198.84804 (2000.0) P Q
n 0.68905680 Peri. 334.05877 -0.42564888 +0.86110825
a 1.2695000 Node 269.65216 -0.77429904 -0.50561776
e 0.2752048 Incl. 16.14457 -0.46827772 +0.05332218
P 1.43 H 19.3 G 0.15 U 3
Residuals in seconds of arc
011224 608 0.1- 0.0 081231 H01 0.2+ 0.0 090103 291 0.1+ 0.1+
011224 608 0.1+ 0.6+ 081231 291 0.3+ 0.1+ 090103 291 0.0 0.1-
011224 608 0.3+ 0.1+ 081231 291 0.1- 0.4+ 090103 291 0.4- 0.1-
020111 644 0.3- 0.1+ 081231 291 0.1- 0.0 090114 H55 0.4+ 0.2+
020111 644 0.4- 0.4- 081231 114 (2.3+ 0.1-) 090114 H55 0.4+ 0.2-
020111 644 0.4+ 0.2- 081231 114 1.3+ 1.2+ 090114 H55 0.8+ 0.0
081231 691 0.2- 0.1- 081231 114 1.1+ 0.6+ 090115 291 0.1+ 0.2+
081231 691 0.2- 0.2- 090101 H55 0.4+ 0.2- 090115 291 0.1- 0.0
081231 691 0.0 0.0 090101 H55 0.4+ 0.0 090115 291 0.1+ 0.1+
081231 291 0.1- 0.1- 090101 H55 0.1- 0.1- 090116 291 0.1+ 0.1+
081231 291 0.1- 0.0 090101 291 0.2- 0.1- 090116 291 0.1+ 0.1+
081231 291 0.0 0.3+ 090101 291 0.1+ 0.3+ 090116 291 0.2- 0.2+
081231 291 0.1+ 0.1+ 090101 291 0.1+ 0.2+ 090120 291 0.1+ 0.0
081231 291 0.2+ 0.2+ 090102 691 0.2- 0.5- 090120 291 0.1+ 0.0
081231 291 0.0 0.1+ 090102 691 0.5- 0.4- 090120 291 0.0 0.0
081231 H01 0.1+ 0.0 090102 691 0.2+ 0.0 090125 291 0.0 0.0
081231 H01 0.2+ 0.0 090102 291 0.1+ 0.0 090125 291 0.1- 0.1+
081231 H01 0.0 0.0 090102 291 0.4- 1.0- 090125 291 0.1- 0.2-
Ephemeris:
2008 YT30 a,e,i = 1.27, 0.28, 16 q = 0.9201
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2009 01 19 04 13.85 +17 09.1 0.727 1.527 125.7 31.6 20.9
2009 01 29 04 13.47 +15 03.2 0.791 1.501 115.0 36.5 21.2
2009 02 08 04 18.46 +13 34.5 0.859 1.473 105.8 40.1 21.4
2009 02 18 04 27.72 +12 33.7 0.926 1.443 97.8 42.7 21.6
2009 02 28 04 40.45 +11 52.0 0.989 1.409 90.8 44.7 21.7
2009 03 10 04 56.04 +11 21.5 1.045 1.373 84.7 46.1 21.8
2009 03 20 05 14.01 +10 55.9 1.093 1.335 79.3 47.1 21.9
2009 03 30 05 34.08 +10 30.3 1.132 1.295 74.6 48.0 21.9
2009 04 09 05 56.04 +10 00.2 1.160 1.253 70.4 48.8 21.9
2009 04 19 06 19.72 +09 22.6 1.178 1.210 66.8 49.7 21.9
2009 04 29 06 45.08 +08 34.9 1.184 1.167 63.7 50.7 21.9
2009 05 09 07 12.09 +07 35.0 1.179 1.123 61.2 51.9 21.8
Timothy B. Spahr (C) Copyright 2009 MPC M.P.E.C. 2009-B60
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