• MPC Preparation (Info)

  • MPEC 2021-C80 : 2021 CH2

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    M.P.E.C. 2021-C80                              Issued 2021 February 7, 17:43 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 CH2                                 
    
    
    Observations:
         K21C02H  C2021 01 11.53523411 46 20.042+19 47 23.49         20.51GVEC080F52
         K21C02H  C2021 01 11.54742611 46 20.091+19 46 58.91         21.19GVEC080F52
         K21C02H  C2021 02 06.50197911 16 59.917-04 08 50.62         19.63GVEC080F52
         K21C02H* C2021 02 06.51286311 16 57.830-04 09 45.89         19.70wUEC080F52
         K21C02H  C2021 02 06.52373811 16 55.733-04 10 41.12         19.70wUEC080F52
         K21C02H mC2021 02 07.25172011 14 46.03 -05 13 04.6          19.97GVEC080I52
         K21C02H mC2021 02 07.26801211 14 42.87 -05 14 29.2          19.92GVEC080I52
         K21C02H mC2021 02 07.26877811 14 42.70 -05 14 33.0          19.91GVEC080I52
         K21C02H KC2021 02 07.60320611 13 38.66 -05 42 45.8          19.9 GVEC080474
         K21C02H KC2021 02 07.60498311 13 38.28 -05 42 54.9          19.9 GVEC080474
         K21C02H KC2021 02 07.60676111 13 37.93 -05 43 04.3          19.8 GVEC080474
         K21C02H KC2021 02 07.60853711 13 37.57 -05 43 13.6          20.1 GVEC080474
    
    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.
    F52 Pan-STARRS 2, Haleakala.  Observers J. Bulger, K. Chambers, T. Dukes, T.
        Lowe, A. Schultz, M. Willman.  Measurers S. Chastel, M. Huber, Y.
        Ramanjooloo, R. Wainscoat, R. Weryk, K. Chambers, T. de Boer, L. Denneau,
        J. Fairlamb, H. Flewelling, C.-C. Lin, E. Magnier.  1.8-m Ritchey-Chretien
        + CCD.
    I52 Steward Observatory, Mt. Lemmon Station.  Observer H. Groeller.  Measurers
        E. J. Christensen, G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D. Grauer,
        H. Groeller, R. A. Kowalski, S. M. Larson, G. J. Leonard, T. A. Pruyne, D.
        Rankin, R. L. Seaman, F. C. Shelly, K. W. Wierzchos.  1.0-m reflector +
        CCD.
    
    Orbital elements:
    2021 CH2                                                 Earth MOID = 0.0517 AU
    Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Veres
    M 224.21327              (2000.0)            P               Q
    n   0.81073919     Peri.  292.42025     -0.27612404     +0.93519001
    a   1.1390653      Node   319.39260     -0.70784291     -0.35394889
    e   0.1258335      Incl.   19.91977     -0.65016453     -0.01182505
    P   1.22           H   21.7           G   0.15           U   6
    Residuals in seconds of arc
    210111 F52  0.1-  0.0     210206 F52  0.1+  0.1+    210207 474  0.2+  0.1-
    210111 F52  0.1+  0.0     210207 I52  0.1-  0.3-    210207 474  0.1-  0.1+
    210206 F52  0.1-  0.0     210207 I52  0.1+  0.1-    210207 474  0.0   0.1+
    210206 F52  0.1+  0.0     210207 I52  0.2-  0.1+    210207 474  0.0   0.1+
    
    Ephemeris:
    2021 CH2                 a,e,i = 1.14, 0.13, 20                  q = 0.9957
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2021 01 08    11 45 10.9 +21 41 00   0.3923  1.2191   118.3    45.3    21.8
    ...
    2021 01 23    11 43 02.1 +11 55 20   0.2892  1.1938   130.9    38.5    20.9
    ...
    2021 01 31    11 32 27.7 +04 06 56   0.2428  1.1791   139.0    33.3    20.4
    ...
    2021 02 06    11 18 26.8 -03 26 21   0.2145  1.1677   144.7    29.2    20.0
    2021 02 07    11 15 30.5 -04 50 55   0.2105  1.1657   145.4    28.7    19.9
    2021 02 08    11 12 22.9 -06 17 57   0.2067  1.1638   146.1    28.2    19.9
    ...
    2021 02 14    10 49 29.4 -15 42 36   0.1893  1.1519   147.6    27.3    19.6
    ...
    2021 02 22    10 07 50.9 -28 45 12   0.1816  1.1357   140.8    33.4    19.7
    ...
    2021 03 09    08 30 58.8 -45 35 46   0.2083  1.1051   117.7    52.7    20.4
    
    M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-C80
    


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