MPEC 2005-H21 : 2004 UP10

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M.P.E.C. 2005-H21                                Issued 2005 Apr. 21, 15:34 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

Observations:
     K04U10P* C2004 10 16.02931 00 13 53.82 +00 40 58.2                 EH021304
     K04U10P  C2004 10 16.07349 00 13 53.56 +00 40 56.4                 EH021304
     K04U10P  C2004 10 16.11233 00 13 53.35 +00 40 54.9                 EH021304
     K04U10P  C2004 12 12.30201 00 10 39.61 +00 21 40.4          23.5 R EH021568
     K04U10P  C2004 12 13.31117 00 10 39.46 +00 21 41.7          23.3 R EH021568
     K04U10P  C2004 12 14.30574 00 10 39.44 +00 21 43.7          23.3 R EH021568

Observer details:
304 Las Campanas Observatory.  Observers S. S. Sheppard, C. Trujillo.
    Measurer S. S. Sheppard.  6.5-m Magellan-Baade telescope + CCD.
568 Mauna Kea.  Observers S. S. Sheppard, D. C. Jewitt.  Measurer S. S.
    Sheppard.  8.3-m Subaru telescope + CCD

Orbital elements:
2004 UP10
Epoch 2004 Nov. 11.0 TT = JDT 2453320.5                 MPC
M   0.15621              (2000.0)            P               Q
n   0.00597710     Peri.  329.35391     +0.99735195     -0.07131541
a  30.0706335      Node    34.74445     +0.07076314     +0.90637316
e   0.0208183      Incl.    1.43327     +0.01678311     +0.41641542
P 165              H    8.9           G   0.15
From 6 observations 2004 Oct. 16-Dec. 14.

Ephemeris:
2004 UP10                a,e,i = 30.07, 0.02, 1                  q = 29.445
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2005 04 30    00 24.60   +01 54.8   30.282   29.445    33.3     1.1    23.8
2005 05 10    00 25.77   +02 02.3   30.179   29.445    42.7     1.3    23.8
2005 05 20    00 26.81   +02 08.9   30.057   29.445    52.0     1.6    23.8
2005 05 30    00 27.71   +02 14.6   29.917   29.445    61.4     1.7    23.8
2005 06 09    00 28.43   +02 19.1   29.764   29.445    70.8     1.9    23.8
2005 06 19    00 28.97   +02 22.4   29.601   29.445    80.2     1.9    23.8
2005 06 29    00 29.31   +02 24.5   29.434   29.445    89.6     2.0    23.8
2005 07 09    00 29.45   +02 25.2   29.267   29.445    99.1     2.0    23.8
2005 07 19    00 29.39   +02 24.6   29.104   29.445   108.7     1.9    23.8
2005 07 29    00 29.13   +02 22.8   28.950   29.445   118.3     1.7    23.8
2005 08 08    00 28.69   +02 19.8   28.810   29.445   128.0     1.6    23.7
2005 08 18    00 28.07   +02 15.7   28.688   29.445   137.7     1.3    23.7
2005 08 28    00 27.30   +02 10.7   28.587   29.445   147.6     1.1    23.7
2005 09 07    00 26.42   +02 05.0   28.511   29.445   157.5     0.8    23.6
2005 09 17    00 25.44   +01 58.7   28.463   29.445   167.5     0.4    23.6
2005 09 27    00 24.42   +01 52.2   28.444   29.445   177.5     0.1    23.5
2005 10 07    00 23.39   +01 45.6   28.454   29.445   172.3     0.3    23.6
2005 10 17    00 22.38   +01 39.3   28.495   29.445   162.1     0.6    23.6
2005 10 27    00 21.45   +01 33.4   28.564   29.445   151.9     0.9    23.7
2005 11 06    00 20.62   +01 28.3   28.661   29.445   141.7     1.2    23.7
2005 11 16    00 19.94   +01 24.2   28.781   29.445   131.5     1.4    23.7
2005 11 26    00 19.43   +01 21.2   28.921   29.445   121.2     1.6    23.8
2005 12 06    00 19.10   +01 19.4   29.077   29.445   111.0     1.8    23.8
2005 12 16    00 18.99   +01 19.0   29.244   29.445   100.8     1.9    23.8
2005 12 26    00 19.09   +01 20.0   29.417   29.445    90.7     1.9    23.8
2006 01 05    00 19.40   +01 22.4   29.590   29.445    80.6     1.9    23.8
2006 01 15    00 19.93   +01 26.2   29.759   29.445    70.5     1.8    23.8
2006 01 25    00 20.65   +01 31.2   29.917   29.445    60.6     1.7    23.8
2006 02 04    00 21.55   +01 37.3   30.061   29.445    50.6     1.5    23.8
2006 02 14    00 22.61   +01 44.4   30.186   29.445    40.8     1.3    23.8
2006 02 24    00 23.80   +01 52.3   30.289   29.445    31.1     1.0    23.8

     The assumed perihelic Neptune 1:1-resonance orbit keeps the object more
than 21 AU from Neptune over a 14 000-year period.  2004 UP10 is located close
to, but is distinct from, 2001 QR322.

Brian G. Marsden             (C) Copyright 2005 MPC           M.P.E.C. 2005-H21

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