MPEC 2005-S40 : 2004 UP10
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M.P.E.C. 2005-S40 Issued 2005 Sept. 25, 14:18 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.
Supported in part by the Brinson Foundation
Prepared using the Tamkin Foundation Computer Network
MPC@CFA.HARVARD.EDU
URL http://cfa-www.harvard.edu/iau/mpc.html ISSN 1523-6714
2004 UP10
Revision to MPEC 2005-H21
Additional Observations:
K04U10P C2005 09 24.35444 00 24 41.17 +01 53 51.9 ES040695
K04U10P C2005 09 24.42294 00 24 40.72 +01 53 48.8 ES040695
K04U10P C2005 09 25.45316 00 24 34.35 +01 53 08.2 ES040695
Observer details:
695 Kitt Peak. Observers J. W. Parker, A. Bieryla. 3.5-m reflector + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc and reference
050924 695 7.6- 3.1- 050925 695 7.7- 3.4- MPO 77791
Orbital elements:
2004 UP10
Eccentricity assumed
Epoch 2005 Aug. 18.0 TT = JDT 2453600.5 MPC
M 298.59629 (2000.0) P Q
n 0.00596053 Peri. 38.18068 +0.29420867 -0.95563487
a 30.1263251 Node 34.71584 +0.87060522 +0.26181682
e 0.0529126 Incl. 1.43445 +0.39431942 +0.13495905
P 165.36 H 8.9 G 0.15
Residuals in seconds of arc
041016 304 0.1- 0.1+ 041212 568 0.1+ 0.1+ 050924 695 0.1+ 0.2+
041016 304 0.1- 0.1- 041213 568 0.0 0.1+ 050924 695 0.2- 0.2-
041016 304 0.2+ 0.2- 041214 568 0.2- 0.0 050925 695 0.1+ 0.0
Ephemeris:
2004 UP10 a,e,i = 30.13, 0.05, 1 q = 28.532
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2005 09 17 00 25.44 +01 58.7 28.444 29.426 167.5 0.4 23.6
2005 09 27 00 24.41 +01 52.1 28.423 29.425 177.5 0.1 23.5
2005 10 07 00 23.38 +01 45.5 28.433 29.423 172.3 0.3 23.6
2005 10 17 00 22.37 +01 39.2 28.472 29.422 162.1 0.6 23.6
2005 10 27 00 21.44 +01 33.4 28.539 29.420 151.9 0.9 23.7
2005 11 06 00 20.61 +01 28.3 28.634 29.419 141.7 1.2 23.7
2005 11 16 00 19.93 +01 24.1 28.753 29.417 131.5 1.4 23.7
2005 11 26 00 19.41 +01 21.1 28.892 29.416 121.2 1.6 23.8
2005 12 06 00 19.09 +01 19.3 29.046 29.414 111.0 1.8 23.8
2005 12 16 00 18.97 +01 18.9 29.212 29.413 100.8 1.9 23.8
2005 12 26 00 19.07 +01 19.9 29.383 29.411 90.7 1.9 23.8
2006 01 05 00 19.39 +01 22.3 29.555 29.410 80.6 1.9 23.8
2006 01 15 00 19.92 +01 26.1 29.721 29.408 70.5 1.8 23.8
2006 01 25 00 20.64 +01 31.1 29.878 29.407 60.6 1.7 23.8
2006 02 04 00 21.54 +01 37.2 30.020 29.405 50.6 1.5 23.8
2006 02 14 00 22.60 +01 44.3 30.144 29.404 40.8 1.3 23.8
2006 02 24 00 23.79 +01 52.3 30.245 29.402 31.1 1.0 23.8
Despite the eccentricity uncertainty, this object is now confirmed as
the second known 1:1 Neptune librator, after 2001 QR322.
Brian G. Marsden (C) Copyright 2005 MPC M.P.E.C. 2005-S40
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