MPEC 2010-A52 : 2008 RH1
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M.P.E.C. 2010-A52 Issued 2010 Jan. 11, 01:33 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 RH1
Revision to MPEC 2008-R27
Additional Observations:
K08R01H 2C2009 08 12.31861917 50 29.162-43 01 31.60 EA052568
K08R01H 2C2009 08 12.32248717 50 29.270-43 01 24.63 22.2 R EA052568
K08R01H 2C2009 09 08.26875818 27 58.056-32 04 17.26 EA052568
K08R01H 2C2009 12 09.24159622 03 11.641-04 39 17.99 24.0 R EA052568
Observer details:
568 Mauna Kea. Observers M. Micheli, G. T. Elliott, D. J. Tholen. Measurer
D. J. Tholen. 2.24-m University of Hawaii reflector.
First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
090812 568 2.5+ 2.2- 091209 568 0.4- 0.0 MPO147459 +0.0013 day
Orbital elements:
2008 RH1 Earth MOID = 0.0702 AU
Epoch 2010 Jan. 4.0 TT = JDT 2455200.5 MPC
M 296.22371 (2000.0) P Q
n 0.89850835 Peri. 147.30927 -0.74648460 -0.66508605
a 1.0636236 Node 350.91524 +0.57915954 -0.63423567
e 0.1617686 Incl. 7.46912 +0.32762014 -0.39421524
P 1.10 H 22.6 G 0.15 U 2
Residuals in seconds of arc
080904 691 0.5- 0.5- 080910 691 0.3- 0.1+ 080925 H55 0.5- 0.1-
080904 691 0.2+ 0.1- 080910 691 0.1- 0.3- 080928 A13 0.6- 0.1+
080904 691 0.2+ 0.7+ 080917 H55 0.3+ 0.0 080928 A13 (1.6- 0.3-)
080904 291 0.2- 0.3+ 080917 H55 0.1- 0.2- 080929 291 0.1+ 0.6-
080904 291 0.1+ 0.3+ 080917 H55 0.1+ 1.3+ 080929 291 0.2+ 0.6-
080904 291 0.0 0.3+ 080918 H55 0.2+ 0.1- 080929 291 0.6+ 0.5-
080905 291 0.2- 0.2+ 080918 H55 0.2+ 0.3- 081001 291 0.8- 0.7-
080905 291 0.2- 0.1+ 080918 H55 0.3+ 0.3+ 081001 291 0.3+ 0.0
080905 291 0.1+ 0.1+ 080918 H55 0.7+ 0.3- 081001 291 0.2+ 0.2+
080906 291 1.6- 0.5+ 080919 H55 0.8+ 0.2+ 081002 291 0.3+ 0.0
080906 291 0.0 0.0 080919 H55 0.4+ 0.3- 081002 291 0.4+ 0.1-
080906 291 0.0 0.2- 080919 H55 0.2+ 0.2+ 081002 291 0.2+ 0.0
080906 691 0.8- 0.0 080919 H55 1.0+ 0.4+ 081005 H55 0.1- 0.2+
080906 691 0.1- 0.3- 080922 H55 0.9+ 0.2+ 081005 H55 0.4+ 0.5+
080906 691 0.3- 0.2+ 080922 H55 0.2+ 0.3+ 081005 H55 0.2+ 0.1+
080906 H01 0.1+ 0.0 080922 H55 0.9+ 0.5+ 081006 291 0.2+ 0.1+
080906 H01 0.0 0.0 080923 448 (0.2- 1.7-) 081006 291 0.2+ 0.2-
080906 H01 0.0 0.0 080923 448 0.4+ 1.0+ 081006 291 1.0- 0.0
080906 H01 0.1+ 0.1- 080923 448 0.1+ 1.1- 081012 H55 0.2+ 0.3+
080906 H01 0.1+ 0.0 080923 H55 0.0 0.3- 081012 H55 0.3+ 0.8+
080907 G96 0.3+ 1.0- 080923 H55 0.7+ 0.6- 081012 H55 (0.5+ 1.6+)
080907 G96 0.8+ 0.4- 080923 H55 0.6+ 0.1- 081028 291 0.1- 0.3+
080907 G96 1.0+ 0.4- 080923 291 1.2- 0.0 081028 291 0.3- 0.6+
080907 G96 0.3+ 0.3- 080923 291 0.2+ 0.1- 081028 291 0.2+ 0.2+
080910 H55 0.2+ 0.1- 080923 291 0.1+ 0.0 090812 568 0.1+ 0.0
080910 H55 0.9+ 0.7+ 080925 H55 0.4+ 0.2+ 090812 568 0.1- 0.0
080910 H55 0.5- 0.2+ 080925 H55 0.0 0.2+ 090908 568 0.0 0.0
080910 691 (2.1- 0.4-) 080925 H55 0.2+ 0.2+ 091209 568 0.1+ 0.0
Ephemeris:
2008 RH1 a,e,i = 1.06, 0.16, 7 q = 0.8916
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2010 01 04 23 14.45 +04 25.9 0.803 1.012 68.2 64.4 24.4
2010 01 14 23 44.15 +08 05.5 0.794 0.986 66.4 66.1 24.4
2010 01 24 00 15.47 +11 44.2 0.777 0.961 64.9 68.1 24.4
2010 02 03 00 48.77 +15 16.1 0.753 0.938 63.7 70.3 24.3
2010 02 13 01 24.45 +18 33.7 0.723 0.919 62.8 72.8 24.3
Gareth V. Williams (C) Copyright 2010 MPC M.P.E.C. 2010-A52
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