MPEC 2010-A13 : 2008 RJ1
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M.P.E.C. 2010-A13 Issued 2010 Jan. 4, 15:03 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 RJ1
Revision to MPEC 2008-R28
Additional Observations:
K08R01J 2C2009 12 06.41590704 59 40.480+01 42 10.59 22.2 R EA013568
K08R01J 2C2009 12 06.42038504 59 40.190+01 42 09.68 EA013568
K08R01J 2C2009 12 06.42581104 59 39.835+01 42 08.57 22.1 R EA013568
K08R01J 2C2009 12 09.39982204 56 30.043+01 33 10.87 22.9 R EA013568
K08R01J 2C2009 12 09.40324404 56 29.811+01 33 10.32 22.8 R EA013568
K08R01J 2C2009 12 09.40712704 56 29.560+01 33 09.66 22.4 R EA013568
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
091206 568 4.7+ 2.0- 091209 568 4.7+ 2.1- MPO147459 -0.026 day
Orbital elements:
2008 RJ1 Earth MOID = 0.2291 AU
Epoch 2010 Jan. 4.0 TT = JDT 2455200.5 MPC
M 210.25521 (2000.0) P Q
n 0.30894381 Peri. 54.16955 -0.41102622 +0.90975174
a 2.1671204 Node 191.98724 -0.90049795 -0.41515225
e 0.4713292 Incl. 16.32753 -0.14198901 -0.00062027
P 3.19 H 17.9 G 0.15 U 2
Residuals in seconds of arc
080904 691 0.2- 0.2- 080920 291 0.1- 0.1+ 081002 291 0.1+ 0.0
080904 691 0.0 0.1- 080921 691 0.1+ 0.4- 081006 291 0.1- 0.1+
080904 691 0.0 0.1+ 080921 691 0.5- 0.3- 081006 291 0.1+ 0.1+
080904 291 0.1- 0.0 080921 291 0.1- 0.1- 081006 291 0.1- 0.0
080904 291 0.1+ 0.1- 080921 291 0.0 0.9- 081011 H55 0.6- 0.1+
080904 291 0.2+ 0.1+ 080921 291 0.6+ 0.0 081011 H55 0.2- 0.4+
080905 291 0.1- 0.2+ 080925 H55 0.2+ 0.4- 081011 H55 0.7- 0.1-
080905 291 0.4- 0.7+ 080925 H55 0.2+ 0.3+ 081017 691 0.1- 0.1+
080905 291 0.1+ 0.1+ 080925 H55 0.4+ 0.6+ 081017 691 0.4+ 0.1+
080905 701 2.0+ 1.5+ 080928 H55 0.6- 0.1- 081017 691 0.1- 0.3+
080905 H36 0.2+ 0.2- 080928 H55 0.4+ 0.3+ 081018 691 0.1- 0.6+
080905 H36 0.7+ 0.7+ 080928 H55 0.3- 0.4+ 081018 691 0.4- 0.0
080905 H36 1.0+ 0.4- 080929 291 0.0 0.1- 081018 691 0.5- 0.1+
080905 701 0.1- 0.7- 080929 291 0.1+ 0.0 081020 H55 0.0 1.3-
080906 291 0.0 0.0 080929 291 0.0 0.1- 081020 H55 0.5+ 0.0
080906 291 0.3- 0.4+ 080929 448 0.2+ 0.6- 081020 H55 0.1+ 0.3+
080906 291 0.2- 0.3+ 080929 448 0.7+ 0.5- 081021 291 0.2- 0.1+
080908 291 0.0 0.5- 080929 448 0.7+ 0.5+ 081021 291 0.0 0.2+
080908 291 0.1- 0.3- 080930 291 0.1- 0.2- 081021 291 0.0 0.3+
080908 291 0.0 0.3- 080930 291 0.4+ 0.0 081024 G96 0.8+ 0.3+
080910 H55 0.9+ 0.4+ 080930 291 0.1+ 0.7- 081024 G96 0.2+ 0.1+
080910 H55 0.3+ 0.3+ 081001 G96 0.2+ 0.2- 081024 G96 0.2+ 0.2-
080910 H55 0.1+ 0.2- 081001 G96 0.3+ 0.4- 081024 G96 0.2+ 0.1+
080910 691 0.3- 0.3+ 081001 G96 0.6+ 0.2- 081106 H55 0.2+ 0.4+
080910 691 0.2+ 0.2+ 081001 G96 0.1+ 0.2- 081106 H55 0.2+ 0.2-
080910 691 0.0 0.0 081001 291 0.1- 0.1+ 081106 H55 0.1+ 1.6-
080918 H55 0.8- 0.0 081001 291 0.1- 0.0 091206 568 0.0 0.0
080918 H55 0.2+ 0.3+ 081001 291 0.0 0.1+ 091206 568 0.0 0.0
080918 H55 0.3+ 0.2- 081001 G96 0.4+ 0.2- 091206 568 0.0 0.1-
080919 291 0.0 0.1+ 081001 G96 0.6+ 0.3- 091209 568 0.1+ 0.0
080919 291 0.0 0.0 081001 G96 0.2+ 0.4- 091209 568 0.0 0.0
080919 291 0.0 0.0 081001 G96 0.3+ 0.2- 091209 568 0.0 0.0
080920 291 0.1- 0.1+ 081002 291 0.1+ 0.1+
080920 291 0.2- 0.1- 081002 291 0.1- 0.1-
Ephemeris:
2008 RJ1 a,e,i = 2.17, 0.47, 16 q = 1.1457
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2010 01 04 04 32.20 +01 18.3 2.317 3.123 138.6 12.0 22.9
2010 01 06 04 30.74 +01 21.7 2.332 3.120 136.6 12.5 23.0
2010 01 08 04 29.37 +01 25.7 2.347 3.117 134.5 13.0 23.0
2010 01 10 04 28.09 +01 30.2 2.364 3.114 132.5 13.5 23.0
2010 01 12 04 26.89 +01 35.3 2.382 3.111 130.5 13.9 23.0
2010 01 14 04 25.79 +01 40.9 2.400 3.108 128.4 14.4 23.1
Timothy B. Spahr (C) Copyright 2010 MPC M.P.E.C. 2010-A13
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