MPEC 2009-D09 : 2004 QG20
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M.P.E.C. 2009-D09 Issued 2009 Feb. 17, 05:24 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
2004 QG20
Additional Observations:
K04Q20G C2009 02 16.07955 09 50 25.34 +08 03 37.4 22.7 C ED009493
K04Q20G C2009 02 16.09090 09 50 24.58 +08 03 43.1 22.4 C ED009493
K04Q20G C2009 02 16.10227 09 50 23.83 +08 03 48.6 22.5 C ED009493
K04Q20G C2009 02 16.97453 09 49 27.82 +08 11 14.7 22.2 C ED009493
K04Q20G C2009 02 16.98231 09 49 27.37 +08 11 18.1 22.3 C ED009493
Observer details:
493 Calar Alto. Observers F. Hormuth, J. C. Datson. 1.23-m reflector + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
090216 493 35.9- 7.7+ 090216 493 35.2- 7.1+ MPO 74323 +0.028 day
Orbital elements:
2004 QG20 Earth MOID = 0.2959 AU
Epoch 2008 Nov. 30.0 TT = JDT 2454800.5 MPC
M 57.87048 (2000.0) P Q
n 0.27504620 Peri. 208.51064 +0.94953945 -0.31273441
a 2.3417055 Node 169.62889 +0.30704771 +0.91129184
e 0.4497522 Incl. 7.63452 +0.06400412 +0.26785140
P 3.58 H 19.1 G 0.15 U 1
Residuals in seconds of arc
040826 703 0.7- 0.8- 040909 246 0.3+ 0.1+ 040922 704 0.3+ 0.1-
040826 703 0.2+ 0.1+ 040909 246 0.1- 0.2- 040924 704 0.4+ 0.2-
040826 703 0.8- 0.1- 040909 246 0.2- 0.0 040924 704 0.5- 0.4-
040826 703 0.4- 0.3+ 040909 246 0.4- 0.2- 040924 704 0.8- 0.3-
040826 703 0.3- 0.6+ 040910 704 0.2- 0.4+ 040924 704 0.6+ 0.2-
040826 703 0.8- 0.5+ 040910 704 0.3- 0.5+ 040924 704 0.2+ 0.0
040826 703 0.5- 1.4+ 040910 704 0.0 0.3+ 041007 704 0.7- 0.1+
040826 413 0.2+ 0.5- 040910 704 0.1+ 0.2+ 041007 704 0.1- 0.3-
040826 413 0.4+ 0.7- 040910 704 0.1+ 1.2+ 041007 704 0.5- 0.2+
040826 413 0.4+ 0.2- 040910 704 0.4- 0.2+ 041007 704 0.4+ 0.0
040827 H36 0.1- 0.1+ 040910 704 0.3- 1.0+ 041007 704 0.2- 0.3+
040827 854 0.5+ 0.1- 040910 704 0.5- 0.1+ 041008 699 0.4- 0.3-
040827 854 0.6- 0.5- 040910 704 0.2- 0.2+ 041008 699 0.4- 0.2-
040827 H36 1.7- 0.3- 040910 704 0.4- 1.0+ 041008 699 0.5- 0.6-
040827 854 0.3+ 0.1- 040910 704 1.0- 0.9+ 041008 699 0.0 0.1+
040827 703 0.3+ 0.7- 040910 704 1.4- 0.3+ 041018 704 0.4+ 0.1+
040827 H36 1.3+ 0.5- 040910 704 0.8+ 1.0+ 041018 704 0.4+ 0.4+
040827 703 0.7+ 0.4+ 040911 704 0.3- 1.1+ 041018 704 0.1- 0.5+
040827 H36 1.1+ 0.1- 040911 704 0.1- 0.7+ 041018 704 0.2+ 0.5+
040827 703 0.0 0.7+ 040911 704 0.7+ 0.4+ 041018 704 0.7+ 0.2+
040827 673 0.0 0.0 040911 704 0.1+ 0.2- 041019 704 0.5- 0.1+
040827 673 0.0 0.0 040911 704 0.7+ 0.2+ 041019 704 0.1- 0.2-
040827 673 0.2+ 0.5- 040912 704 0.4- 0.6- 041019 704 0.3+ 0.4-
040827 673 0.0 0.0 040912 704 0.2- 0.5- 041019 704 0.1+ 0.1-
040827 G90 0.1- 0.3- 040912 704 0.6+ 0.0 041023 670 0.0 0.1+
040827 G90 0.1- 0.1- 040912 704 0.1+ 0.4- 041201 644 0.1- 0.2+
040827 G90 0.1+ 0.2- 040917 704 0.0 0.2+ 041201 644 0.2- 0.3+
040905 413 0.1+ 0.3- 040917 704 0.0 0.3- 041201 644 0.5+ 0.2+
040905 413 0.1+ 0.3- 040917 704 0.2- 0.1- 041204 699 0.5- 0.1+
040907 691 0.2+ 0.3- 040917 704 0.3- 0.1- 041204 699 0.7- 0.1+
040907 691 0.0 0.3- 040917 704 0.3- 0.5+ 041204 699 0.5+ 1.3-
040907 691 0.0 0.3- 040918 170 0.4+ 0.3- 041204 699 0.1- 0.6-
040909 704 0.3- 0.1- 040918 170 0.5+ 0.3- 090216 493 0.1- 0.3+
040909 704 0.1+ 0.4+ 040918 170 0.3+ 0.0 090216 493 0.2- 0.2+
040909 704 0.1- 0.8- 040922 704 0.7+ 0.3+ 090216 493 0.1- 0.1-
040909 704 0.7+ 0.6- 040922 704 0.8+ 0.3+ 090216 493 0.3- 0.2+
040909 704 0.1+ 0.1- 040922 704 0.5+ 0.5+ 090216 493 0.7+ 0.4-
040909 246 0.1- 0.5- 040922 704 0.3+ 0.6+
Ephemeris:
2004 QG20 a,e,i = 2.34, 0.45, 8 q = 1.2885
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2009 02 18 09 48.37 +08 20.0 1.625 2.611 174.5 2.1 22.5
2009 02 28 09 38.35 +09 42.4 1.688 2.654 163.7 6.0 22.8
2009 03 10 09 30.18 +10 55.5 1.780 2.696 151.7 10.1 23.2
2009 03 20 09 24.48 +11 55.1 1.896 2.736 140.2 13.5 23.5
Gareth V. Williams (C) Copyright 2009 MPC M.P.E.C. 2009-D09
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