MPEC 2008-B20 : 2004 XN50
The following Minor Planet Electronic Circular may be linked-to from your own Web pages, but must not otherwise be redistributed electronically.
Read MPEC 2008-B19
Read MPEC 2008-B21
M.P.E.C. 2008-B20 Issued 2008 Jan. 19, 21:01 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 XN50
Revision to MPEC 2004-X78
Additional Observations:
K04X50N 2C2008 01 08.47389909 53 30.675+17 26 18.79 23.0 R EB020568
K04X50N 2C2008 01 08.48128509 53 30.231+17 26 21.65 23.0 R EB020568
K04X50N 2C2008 01 09.49838709 52 30.025+17 32 55.88 22.8 R EB020568
K04X50N 2C2008 01 09.50406209 52 29.672+17 32 58.12 22.7 R EB020568
Observer details:
568 Mauna Kea. Observers F. Bernardi, M. Micheli. Measurers F. Bernardi,
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
080108 568 7.9+ 2.7- 080109 568 8.0+ 2.6- MPO 77794 -0.014 day
Orbital elements:
2004 XN50 PHA, Earth MOID = 0.0077 AU
Epoch 2007 Oct. 27.0 TT = JDT 2454400.5 MPC
M 133.41929 (2000.0) P Q
n 0.45177536 Peri. 252.93431 +0.71491799 +0.69730868
a 1.6821098 Node 62.81920 -0.61748064 +0.66419865
e 0.7781133 Incl. 3.31929 -0.32803954 +0.26944529
P 2.18 H 18.8 G 0.15 U 3
Residuals in seconds of arc
041214 704 0.2+ 0.2+ 041215 198 0.3+ 0.0 041230 170 0.6- 0.6+
041214 704 0.2- 0.1+ 041215 198 0.3+ 0.1+ 041230 170 0.5- 0.5+
041214 704 0.5+ 0.3+ 041215 198 0.2+ 0.1+ 041230 170 0.5- 0.5+
041214 704 0.3- 0.4+ 041215 198 0.0 0.0 050101 104 0.8- 0.0
041214 704 0.5- 0.4+ 041215 198 0.1- 0.0 050101 104 1.0- 0.1+
041215 H06 0.6+ 0.1+ 041215 J95 0.1- 0.1+ 050101 104 0.7+ 0.6+
041215 H06 0.5+ 0.4- 041215 J95 0.2+ 0.1+ 050101 104 0.1- 0.3+
041215 H06 0.8+ 0.0 041215 J95 0.2+ 1.0- 050101 104 0.6+ 0.5+
041215 651 1.2+ 0.5+ 041216 J95 0.1+ 0.2- 050101 J95 0.1- 0.1-
041215 651 0.9+ 0.5- 041216 J95 0.1- 0.4- 050101 J95 0.4- 0.1-
041215 704 0.4- 1.2+ 041216 J95 0.1+ 0.5- 050101 J95 0.2+ 0.2-
041215 651 (0.8- 2.1+) 041217 734 0.2- 0.2- 050102 952 0.4- 0.0
041215 448 0.2+ 0.6- 041217 734 0.4- 0.1- 050102 952 0.4+ 0.1+
041215 448 0.1+ 0.0 041217 734 0.1- 0.0 050102 952 0.5+ 0.2+
041215 448 0.2- 0.3- 041217 734 0.5+ 0.0 050103 185 0.4- 0.3-
041215 704 1.9- 0.8+ 041217 734 0.3- 0.1- 050103 185 0.3- 0.4-
041215 448 0.1+ 0.2- 041217 734 0.1- 0.0 050103 185 0.5- 1.3-
041215 448 0.1+ 0.4- 041217 734 0.6- 0.1- 050103 185 0.2+ 0.1+
041215 704 0.6- 0.1- 041217 734 1.3+ 0.5+ 050103 185 0.4+ 0.0
041215 673 0.2+ 1.1+ 041217 734 0.4+ 0.1+ 050106 952 0.8+ 0.2-
041215 673 0.0 1.4+ 041217 734 0.4+ 0.1- 050106 952 0.7+ 0.4-
041215 704 0.1+ 0.7+ 041221 448 0.2+ 0.1- 050106 952 0.8+ 0.4-
041215 704 0.2+ 0.8+ 041221 448 0.4+ 0.3- 050106 952 0.6+ 0.6-
041215 673 0.8- 0.6- 041221 448 1.1+ 0.2- 050106 952 0.4+ 0.9-
041215 673 0.2- 0.0 041225 J95 0.1- 0.5+ 050111 118 0.4+ 0.3+
041215 704 0.1- 0.5+ 041225 J95 0.6+ 0.6+ 050111 118 0.9+ 0.8-
041215 704 0.3+ 0.3+ 041225 J95 0.1+ 0.4- 050113 448 0.0 0.0
041215 673 0.2+ 0.1- 041226 448 0.1+ 0.2- 050113 448 0.2- 0.1-
041215 673 0.4+ 0.2- 041226 448 0.1+ 0.3- 050113 448 0.2- 0.5-
041215 704 0.3- 0.4+ 041226 448 0.1+ 0.2- 050304 F65 0.1- 0.3+
041215 704 0.0 0.5+ 041226 J95 0.5- 0.2+ 050304 F65 0.2+ 0.3+
041215 246 1.0- 0.2+ 041226 J95 0.4- 0.1+ 050304 F65 0.2- 0.1+
041215 246 0.6- 0.6+ 041226 J95 0.2+ 0.2+ 080108 568 0.0 0.0
041215 246 1.1- 0.6+ 041229 734 0.1- 0.4- 080108 568 0.1- 0.0
041215 246 1.8- 0.3- 041229 734 0.7- 0.2- 080109 568 0.1+ 0.0
041215 246 0.9- 0.6+ 041230 587 0.2+ 0.7+ 080109 568 0.0 0.0
041215 246 (2.2- 0.2-) 041230 587 0.2+ 0.4-
Ephemeris:
2004 XN50 a,e,i = 1.68, 0.78, 3 q = 0.3732
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2008 01 15 09 46.58 +18 10.1 2.085 2.984 151.0 9.2 23.4
2008 01 25 09 33.94 +19 22.1 2.030 2.989 164.1 5.2 23.1
2008 02 04 09 19.63 +20 33.5 2.008 2.991 175.0 1.6 22.9
2008 02 14 09 04.85 +21 37.4 2.020 2.990 166.9 4.3 23.1
2008 02 24 08 50.95 +22 28.0 2.067 2.987 154.0 8.4 23.3
2008 03 05 08 39.03 +23 03.4 2.143 2.982 141.3 12.0 23.6
2008 03 15 08 29.87 +23 23.8 2.243 2.973 129.2 15.0 23.8
2008 03 25 08 23.77 +23 31.1 2.361 2.963 118.0 17.3 23.9
Gareth V. Williams (C) Copyright 2008 MPC M.P.E.C. 2008-B20
Read MPEC 2008-B19
Read MPEC 2008-B21
Our Web policy. Index to the CBAT/MPC/ICQ pages.
