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Minor Planet Center

MPEC 2004-Y23 : 2004 YR

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M.P.E.C. 2004-Y23                                Issued 2004 Dec. 19, 14:47 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 YR

Observations:
     K04Y00R* C2004 12 18.38512 07 37 19.86 +10 57 39.4          19.6   EY023704
     K04Y00R  C2004 12 18.39846 07 37 20.35 +10 58 45.8          19.4   EY023704
     K04Y00R  C2004 12 18.41276 07 37 20.74 +10 59 54.5          19.2   EY023704
     K04Y00R  C2004 12 18.42633 07 37 21.30 +11 01 02.2          19.1   EY023704
     K04Y00R  C2004 12 19.01658 07 37 48.86 +11 50 22.7          18.6 V EY023941
     K04Y00R  C2004 12 19.01704 07 37 48.88 +11 50 25.2          18.7 V EY023941
     K04Y00R  C2004 12 19.01750 07 37 48.91 +11 50 27.4          18.8 V EY023941
     K04Y00R  C2004 12 19.01841 07 37 48.94 +11 50 32.1          18.6 V EY023941
     K04Y00R  C2004 12 19.01887 07 37 48.95 +11 50 34.5          18.8 V EY023941
     K04Y00R  C2004 12 19.31100 07 38 01.66 +12 15 48.6          19.3 R EY023734
     K04Y00R  C2004 12 19.31247 07 38 01.78 +12 15 53.4          19.5 R EY023734
     K04Y00R  C2004 12 19.31830 07 38 02.12 +12 16 26.7          19.9 R EY023734
     K04Y00R  C2004 12 19.34723 07 38 03.44 +12 19 01.0          18.9 R EY023854
     K04Y00R 2C2004 12 19.35229 07 38 03.48 +12 19 26.5          18.2 R EY023H06
     K04Y00R  C2004 12 19.35289 07 38 03.63 +12 19 30.5          19.2 R EY023854
     K04Y00R 2C2004 12 19.35526 07 38 03.57 +12 19 42.3          18.7 R EY023H06
     K04Y00R 2C2004 12 19.35830 07 38 03.70 +12 19 58.3          18.2 R EY023H06
     K04Y00R  C2004 12 19.35858 07 38 03.84 +12 19 59.8          19.1 R EY023854

Observer details:
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.
734 Farpoint Observatory.  Observer G. Hug.  0.4-m f/6 Schmidt-Cassegrain
    + CCD.
854 Sabino Canyon Observatory, Tucson.  Observer J. E. McGaha.  0.36-m f/10.0
    Schmidt-Cassegrain + CCD.
941 Observatorio Pla D'Arguines.  Observer R. Ferrando.  0.36-m f/6.3
    Schmidt-Cassegrain + CCD.
H06 New Mexico Skies Observatory.  Observer R. Hutsebaut.  0.30-m reflector
    + CCD.

Orbital elements:
2004 YR
Epoch 2004 Dec. 1.0 TT = JDT 2453340.5                  MPC
M 320.64831              (2000.0)            P               Q
n   0.44927080     Peri.   66.00764     -0.83936362     -0.24199254
a   1.6883556      Node    96.90442     +0.10435924     -0.95051976
e   0.4103582      Incl.   29.35950     +0.53345840     -0.19481223
P   2.19           H   20.4           G   0.15
From 18 observations 2004 Dec. 18-19.

Ephemeris:
2004 YR                  a,e,i = 1.69, 0.41, 29                  q = 0.9955
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2004 12 11    07 31.75   +03 06.4    0.354    1.280   141.0    29.0    20.0
2004 12 21    07 39.29   +14 52.0    0.259    1.223   154.5    20.3    18.9
2004 12 31    07 48.02   +37 17.0    0.196    1.169   159.9    16.8    18.1
2005 01 10    08 08.52   +68 14.0    0.186    1.119   133.3    39.8    18.6
2005 01 20    16 37.76   +86 10.7    0.228    1.076   107.8    60.5    19.5
2005 01 30    19 02.43   +73 14.9    0.292    1.040    92.7    71.1    20.3
2005 02 09    19 13.35   +65 14.8    0.358    1.014    84.1    75.4    20.8
2005 02 19    19 16.26   +59 57.8    0.419    0.999    79.3    76.4    21.2
2005 03 01    19 17.31   +56 00.8    0.469    0.996    76.9    75.7    21.4
2005 03 11    19 17.78   +52 47.7    0.508    1.005    76.5    74.0    21.5
2005 03 21    19 17.42   +50 00.5    0.532    1.025    77.8    71.7    21.6
2005 03 31    19 15.65   +47 27.2    0.543    1.056    80.6    68.9    21.6
2005 04 10    19 11.38   +44 58.2    0.541    1.096    85.0    65.6    21.6
2005 04 20    19 03.26   +42 17.7    0.527    1.143    91.0    61.5    21.5
2005 04 30    18 50.16   +39 02.8    0.505    1.194    98.9    56.4    21.3
2005 05 10    18 31.26   +34 42.3    0.480    1.250   108.8    49.9    21.1
2005 05 20    18 07.07   +28 38.5    0.459    1.308   120.8    41.6    20.9
2005 05 30    17 40.00   +20 33.1    0.451    1.367   134.2    32.1    20.7
2005 06 09    17 13.73   +10 57.8    0.466    1.426   146.1    23.4    20.6
2005 06 19    16 51.90   +01 14.1    0.511    1.486   151.6    19.0    20.8
2005 06 29    16 36.47   -07 19.0    0.585    1.544   148.1    20.4    21.2
2005 07 09    16 27.67   -14 11.0    0.683    1.602   140.0    24.1    21.7

Kyle E. Smalley              (C) Copyright 2004 MPC           M.P.E.C. 2004-Y23

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MPEC number:

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