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IAU Minor Planet Center

Minor Planet Center

MPEC 2004-Y45 : 2004 YU5

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M.P.E.C. 2004-Y45                                Issued 2004 Dec. 21, 23:35 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 YU5

Observations:
     K04Y05U* C2004 12 20.21094 01 44 12.68 +72 11 41.4          19.1   EY045704
     K04Y05U  C2004 12 20.23931 01 44 24.86 +72 10 54.1          19.0   EY045704
     K04Y05U  C2004 12 20.25389 01 44 30.85 +72 10 29.8          19.2   EY045704
     K04Y05U  C2004 12 20.26718 01 44 36.58 +72 10 07.4          19.2   EY045704
     K04Y05U 5C2004 12 21.09977 01 50 41.92 +71 47 18.7          19.8 R EY045673
     K04Y05U 5C2004 12 21.10520 01 50 44.14 +71 47 09.6                 EY045673
     K04Y05U 5C2004 12 21.11285 01 50 47.22 +71 46 56.2                 EY045673
     K04Y05U 5C2004 12 21.12118 01 50 50.63 +71 46 42.1                 EY045673
     K04Y05U  C2004 12 21.13318 01 50 54.84 +71 46 20.9          18.9   EY045704
     K04Y05U  C2004 12 21.14822 01 51 01.08 +71 45 56.5          19.4   EY045704
     K04Y05U  C2004 12 21.17754 01 51 13.21 +71 45 05.4          19.1   EY045704
     K04Y05U  C2004 12 21.19134 01 51 18.82 +71 44 41.9          19.4   EY045704
     K04Y05U  C2004 12 21.73661 01 55 16.81 +71 28 53.9          19.2 R EY045118
     K04Y05U  C2004 12 21.73963 01 55 18.17 +71 28 48.0          18.9 R EY045118
     K04Y05U  C2004 12 21.74723 01 55 20.97 +71 28 35.0          19.4 R EY045118

Observer details:
118 Modra.  Observers J. Vilagi, L. Kornos.  0.6-m f/5.5 reflector + CCD.
673 Table Mountain Observatory, Wrightwood.  Observer J. Young.  0.6-m
    reflector + CCD.
704 Lincoln Laboratory ETS, New Mexico.  Observers M. Blythe, F. Shelly,
    M. Bezpalko, R. Huber, L. Manguso, D. Torres, R. Kracke, M. McCleary,
    H. Stange, A. Milner.  Measurers J. Stuart, R. Sayer, J. Evans, J. Kommers.
    1.0-m f/2.15 reflector + CCD.

Orbital elements:
2004 YU5
Epoch 2004 Dec. 21.0 TT = JDT 2453360.5                 MPC
M 358.44000              (2000.0)            P               Q
n   0.26519761     Peri.  141.65861     +0.02502449     -0.93824602
a   2.3993281      Node   304.22259     +0.78292994     +0.23302153
e   0.4705287      Incl.   24.66534     +0.62160638     -0.25572519
P   3.72           H   18.7           G   0.15
From 15 observations 2004 Dec. 20-21.

Ephemeris:
2004 YU5                 a,e,i = 2.40, 0.47, 25                  q = 1.2704
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2004 12 21    01 49.95   +71 49.9    0.447    1.272   120.9    41.6    19.1
2004 12 31    02 57.68   +65 38.4    0.421    1.271   124.7    39.5    18.9
2005 01 10    03 51.79   +56 37.9    0.412    1.279   128.0    37.3    18.8
2005 01 20    04 33.29   +46 00.5    0.425    1.295   129.3    36.0    18.9
2005 01 30    05 06.16   +35 32.4    0.462    1.319   127.6    36.3    19.1
2005 02 09    05 33.64   +26 32.2    0.524    1.350   123.8    37.4    19.5
2005 02 19    05 57.98   +19 25.5    0.605    1.387   119.1    38.5    19.9
2005 03 01    06 20.42   +14 01.0    0.701    1.430   114.2    39.2    20.3
2005 03 11    06 41.70   +09 55.3    0.810    1.477   109.6    39.3    20.7
2005 03 21    07 02.34   +06 45.8    0.927    1.527   105.1    39.0    21.0
2005 03 31    07 22.55   +04 14.8    1.052    1.581   100.8    38.4    21.3
2005 04 10    07 42.48   +02 09.3    1.183    1.636    96.6    37.5    21.6
2005 04 20    08 02.23   +00 19.9    1.319    1.693    92.6    36.3    21.9

Timothy B. Spahr             (C) Copyright 2004 MPC           M.P.E.C. 2004-Y45

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