• MPC Preparation (Info)

  • MPEC 2001-Y50 : 2001 YM4

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    M.P.E.C. 2001-Y50                                Issued 2001 Dec. 27, 19:30 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 YM4
    
    Observations:
         K01Y04M* C2001 12 22.38086 09 12 42.18 +30 24 27.7          19.6        704
         K01Y04M  C2001 12 22.39588 09 12 38.81 +30 23 51.3          20.1        704
         K01Y04M  C2001 12 22.41100 09 12 35.57 +30 23 14.3          19.6        704
         K01Y04M  C2001 12 22.42601 09 12 32.30 +30 22 37.3          20.1        704
         K01Y04M  C2001 12 23.36841 09 09 11.17 +29 43 35.0          19.9        704
         K01Y04M  C2001 12 23.38368 09 09 07.81 +29 42 57.1          20.1        704
         K01Y04M  C2001 12 23.39894 09 09 04.38 +29 42 19.6          20.1        704
         K01Y04M  C2001 12 23.41419 09 09 01.02 +29 41 41.3          20.1        704
         K01Y04M  C2001 12 23.42945 09 08 57.59 +29 41 03.3          19.7        704
         K01Y04M  C2001 12 25.27330 09 02 19.25 +28 23 31.2          20.8 R      651
         K01Y04M  C2001 12 25.27612 09 02 18.43 +28 23 22.7          20.7 R      651
         K01Y04M  C2001 12 25.27898 09 02 17.81 +28 23 16.7          20.8 R      651
    
    Observer details:
    651 Grasslands Observatory, Tucson.  Observer J. E. McGaha.  0.62-m f/5.1
        reflector + 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 YM4
    Epoch 2001 Dec. 17.0 TT = JDT 2452260.5                 MPC
    M  32.68043              (2000.0)            P               Q
    n   0.43643674     Peri.   96.26388     +0.79837207     -0.44546580
    a   1.7212945      Node   290.83622     +0.21447140     +0.83908859
    e   0.3917904      Incl.   25.69124     +0.56267580     +0.31223477
    P   2.26           H   21.2           G   0.15
    From 12 observations 2001 Dec. 22-25.
    
    Ephemeris:
    2001 YM4                 a,e,i = 1.72, 0.39, 26                  q = 1.0469
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2001 12 27    08 55.99   +27 09.9    0.409    1.340   145.3    24.7    21.0
    2002 01 01    08 37.60   +23 33.2    0.413    1.367   154.2    18.2    20.9
    2002 01 06    08 19.65   +19 58.2    0.425    1.395   162.9    12.0    20.8
    2002 01 11    08 02.87   +16 34.2    0.443    1.423   170.4     6.6    20.7
    2002 01 16    07 47.84   +13 29.0    0.470    1.451   172.4     5.1    20.8
    2002 01 21    07 34.94   +10 47.6    0.503    1.478   167.2     8.5    21.1
    2002 01 26    07 24.31   +08 31.8    0.542    1.506   160.5    12.6    21.5
    
    Brian G. Marsden             (C) Copyright 2001 MPC           M.P.E.C. 2001-Y50
    

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