• MPC Preparation (Info)

  • MPEC 2021-H03 : 2021 GS12

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    M.P.E.C. 2021-H03                                Issued 2021 April 16, 05:21 UT
    
         The Minor Planet Electronic Circulars contain information on unusual
             minor planets and routine data on comets.  They are published
        on behalf of Division F 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 https://www.minorplanetcenter.net/    ISSN 1523-6714
    
                                    2021 GS12                                
    
    
    Observations:
         K21G12S  C2021 04 10.16371 09 17 22.95 -11 08 04.3          20.5 GVEH003G96
         K21G12S  C2021 04 10.16889 09 17 26.45 -11 07 41.3          21.3 GVEH003G96
         K21G12S* C2021 04 14.25521409 58 07.380-06 54 04.63         21.54wUEH003F51
         K21G12S  C2021 04 14.28183209 58 18.654-06 52 44.67         21.25wUEH003F51
         K21G12S  C2021 04 14.29516809 58 24.302-06 52 04.55         21.67wUEH003F51
         K21G12S KC2021 04 15.08545710 04 28.22 -06 14 32.4          21.8 VuEH003H21
         K21G12S KC2021 04 15.09117910 04 30.50 -06 14 16.4          21.3 VuEH003H21
         K21G12S KC2021 04 15.09404010 04 31.65 -06 14 08.5          21.5 VuEH003H21
         K21G12S KC2021 04 15.09709110 04 32.87 -06 13 59.9          21.7 VuEH003H21
         K21G12S ^C2021 04 15.25864810 05 45.031-06 05 59.60         21.37GVEH003568
         K21G12S ^C2021 04 15.26062410 05 45.791-06 05 54.23         21.53GVEH003568
         K21G12S ^C2021 04 15.26161010 05 46.173-06 05 51.56         21.61GVEH003568
         K21G12S ^C2021 04 15.26263410 05 46.567-06 05 48.74         21.34GVEH003568
         K21G12S KC2021 04 15.40695310 06 46.66 -05 57 03.7          21.6 GVEH003474
         K21G12S KC2021 04 15.41193310 06 48.59 -05 56 51.0          21.5 GVEH003474
    
    Observer details:
    474 Mount John Observatory, Lake Tekapo.  Observers A. C. Gilmore, P. M.
        Kilmartin.  Measurer P. M. Kilmartin.  1.0-m f/7.7 reflector + CCD.
    568 Mauna Kea.  Observers R. Wainscoat, L. Wells, T. Burdullis.  Measurers R.
        Weryk, R. Wainscoat.  3.6-m Canada-France-Hawaii Telescope + CCD.
    F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, T. Lowe, A. Schultz, M.
        Willman.  Measurers K. Chambers, S. Chastel, T. de Boer, L. Denneau, J.
        Fairlamb, H. Flewelling, M. Huber, C.-C. Lin, E. Magnier, Y. Ramanjooloo,
        R. Wainscoat, R. Weryk.  1.8-m Ritchey-Chretien + CCD.
    G96 Mt. Lemmon Survey.  Observer G. J. Leonard.  Measurers B. Gray, D. Rankin,
        F. C. Shelly.  1.5-m reflector + 10K CCD.
    H21 Astronomical Research Observatory, Westfield.  Observer R. Holmes.
        Measurers S. Foglia, L. Buzzi, T. Linder, R. Holmes.  0.81-m f/4.0
        astrograph + CCD.
    
    Orbital elements:
    2021 GS12                                                Earth MOID = 0.0260 AU
    Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Bell                    
    M 337.91239              (2000.0)            P               Q                  
    n   1.08035867     Peri.  204.06583     +0.30080894     -0.95314495             
    a   0.9406414      Node   228.44482     +0.88179370     +0.29078584             
    e   0.2358839      Incl.    2.45647     +0.36325452     +0.08341642             
    P   0.91           H   25.57          G   0.15           U   5                  
    Residuals in seconds of arc
    210410 G96  0.3+  0.1+    210415 H21  0.2+  0.3+    210415 568  0.0   0.0
    210410 G96  0.2-  0.3-    210415 H21  0.0   0.4+    210415 568  0.0   0.0
    210414 F51  0.4+  0.1+    210415 H21  0.1+  0.4+    210415 568  0.0   0.0
    210414 F51  0.1-  0.1+    210415 H21  0.2+  0.5+    210415 474  0.3-  0.1+
    210414 F51  0.2-  0.0     210415 568  0.0   0.0     210415 474  0.6-  0.6-
    
    Ephemeris:
    2021 GS12                a,e,i = 0.94, 0.24, 2                   q = 0.7188
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2021 03 17    01 46 58.5 -17 24 14   0.07247 0.9355    33.6   143.9    27.1
    ...
    2021 04 01    06 06 55.7 -24 06 26   0.03612 0.9961    84.0    93.9    21.7
    ...
    2021 04 09    09 02 01.2 -12 37 28   0.04831 1.0256   118.8    58.9    21.2
    ...
    2021 04 15    10 03 49.3 -06 17 00   0.06732 1.0463   128.3    48.8    21.6
    2021 04 16    10 10 55.0 -05 32 37   0.07087 1.0496   129.0    48.0    21.7
    2021 04 17    10 17 24.3 -04 52 28   0.07451 1.0528   129.6    47.3    21.8
    ...
    2021 04 23    10 47 17.5 -01 59 28   0.09755 1.0715   130.6    45.4    22.4
    ...
    2021 05 01    11 13 40.0 -00 02 02   0.1306  1.0939   128.7    46.0    23.1
    ...
    2021 05 16    11 47 57.0 +00 53 20   0.1976  1.1278   121.8    49.6    24.2
    
    M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-H03
    


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