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IAU Minor Planet Center

Minor Planet Center

MPEC 2001-Y35: 2001 YR3

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M.P.E.C. 2001-Y35                                Issued 2001 Dec. 24, 00:21 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://cfa-www.harvard.edu/iau/mpc.html  ISSN 1523-6714

                                   2001 YR3

Observations:
     K01Y03R* C2001 12 19.46677 07 47 40.04 +21 25 28.9          20.0        704
     K01Y03R  C2001 12 19.48191 07 47 45.50 +21 29 06.3          19.4        704
     K01Y03R  C2001 12 19.49727 07 47 50.92 +21 32 45.2          19.7        704
     K01Y03R  C2001 12 19.51241 07 47 56.32 +21 36 21.0          19.9        704
     K01Y03R  C2001 12 20.36374 07 53 36.48 +25 04 00.9          19.1 R      649
     K01Y03R  C2001 12 20.36441 07 53 36.72 +25 04 10.8          18.8 R      649
     K01Y03R  C2001 12 20.36578 07 53 37.25 +25 04 31.8          19.3 R      649
     K01Y03R  C2001 12 20.36647 07 53 37.49 +25 04 41.1          19.4 R      649
     K01Y03R  C2001 12 21.28226 08 00 13.64 +28 54 22.8          19.1 R      649
     K01Y03R  C2001 12 21.28411 08 00 14.30 +28 54 52.2          19.5 R      649
     K01Y03R  C2001 12 21.28778 08 00 15.90 +28 55 46.3          19.6 R      649
     K01Y03R  C2001 12 22.36366 08 08 43.42 +33 30 39.6          19.1        704
     K01Y03R  C2001 12 22.39366 08 08 57.32 +33 38 21.7          19.3        704
     K01Y03R  C2001 12 22.40869 08 09 04.24 +33 42 12.9          19.0        704
     K01Y03R  C2001 12 22.42380 08 09 11.27 +33 46 03.6          19.3        704

Observer details:
649 Powell Observatory, Louisburg.  Observers K. Smalley, R. Fredrick,
    R. Trentman.  0.75-m Newtonian + CCD.
704 Lincoln Laboratory ETS, New Mexico.  Observers M. Blythe, F. Shelly,
    M. Bezpalko, R. Huber, L. Manguso, S. Adams, J. Piscitelli.  Measurers
    J. Stuart, R. Sayer, J. B. Evans, H. Viggh.  1.0-m f/2.15 reflector + CCD.

Orbital elements:
2001 YR3
Epoch 2001 Dec. 17.0 TT = JDT 2452260.5                 MPC
M 348.98969              (2000.0)            P               Q
n   0.44908826     Peri.   23.27401     -0.36403939     -0.84237152
a   1.6888131      Node    90.08999     +0.77984649     -0.50893247
e   0.3758196      Incl.   23.41253     +0.50922958     +0.17719471
P   2.19           H   23.3           G   0.15
From 15 observations 2001 Dec. 19-22.

Ephemeris:
2001 YR3                 a,e,i = 1.69, 0.38, 23                  q = 1.0541
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2001 12 17    07 33.67   +12 12.6    0.112    1.083   150.5    26.6    19.9
2001 12 19    07 44.82   +19 35.2    0.106    1.079   152.5    24.9    19.7
2001 12 21    07 58.11   +27 43.1    0.102    1.075   152.3    25.2    19.7
2001 12 23    08 14.16   +36 13.5    0.100    1.071   149.4    27.8    19.7
2001 12 25    08 33.79   +44 34.7    0.101    1.068   144.6    32.3    19.8
2001 12 27    08 57.98   +52 15.1    0.105    1.065   138.7    37.5    20.1
2001 12 29    09 27.81   +58 50.2    0.111    1.062   132.8    42.8    20.3
2001 12 31    10 04.11   +64 06.8    0.119    1.060   127.3    47.5    20.6
2002 01 02    10 46.78   +68 00.9    0.128    1.058   122.5    51.6    20.9
2002 01 04    11 34.0    +70 36.9    0.139    1.056   118.4    55.0    21.1
2002 01 06    12 22.2    +72 05.5    0.150    1.055   114.8    57.7    21.4
2002 01 08    13 07.2    +72 42.1    0.162    1.054   111.9    59.9    21.6
2002 01 10    13 46.2    +72 43.2    0.174    1.054   109.4    61.6    21.8
2002 01 12    14 18.6    +72 23.0    0.187    1.054   107.3    63.0    22.0
2002 01 14    14 44.7    +71 51.5    0.200    1.055   105.5    64.0    22.2
2002 01 16    15 05.6    +71 15.1    0.212    1.056   104.1    64.7    22.3

Brian G. Marsden             (C) Copyright 2001 MPC           M.P.E.C. 2001-Y35

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