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  • MPEC 2021-C90 : 2021 CO2

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    M.P.E.C. 2021-C90                              Issued 2021 February 8, 19:43 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 CO2                                 
    
    
    Observations:
         K21C02O  C2021 02 05.48426 11 42 07.54 +12 47 38.2          20.8 GVEC090G96
         K21C02O  C2021 02 05.48943 11 41 55.94 +12 46 00.4                VEC090G96
         K21C02O  C2021 02 06.33904 11 12 53.88 +08 25 36.7          20.1 GVEC090G96
         K21C02O  C2021 02 06.34418 11 12 43.60 +08 24 04.1                VEC090G96
         K21C02O  C2021 02 06.34934 11 12 33.53 +08 22 34.4          20.9 GVEC090G96
         K21C02O* C2021 02 07.32767410 43 42.19 +03 51 46.6          20.57GVEC090G96
         K21C02O  C2021 02 07.33797010 43 24.97 +03 49 07.7          21.16GVEC090G96
         K21C02O  C2021 02 07.34312610 43 16.34 +03 47 48.1          20.96GVEC090G96
         K21C02O KC2021 02 07.37773910 42 18.88 +03 38 57.6          20.84GVEC090I52
         K21C02O KC2021 02 07.38070310 42 13.98 +03 38 12.3          20.49GVEC090I52
         K21C02O KC2021 02 07.38366810 42 09.09 +03 37 26.8          20.34GVEC090I52
         K21C02O KC2021 02 07.46282210 39 59.35 +03 17 24.1          20.78GVEC090I52
         K21C02O KC2021 02 07.46578910 39 54.54 +03 16 39.2          20.73GVEC090I52
         K21C02O KC2021 02 07.46875310 39 49.75 +03 15 54.2          20.88GVEC090I52
         K21C02O KC2021 02 08.29661910 19 46.02 +00 02 47.4          20.72GVEC090I52
         K21C02O KC2021 02 08.29966110 19 41.77 +00 02 07.4          20.69GVEC090I52
         K21C02O KC2021 02 08.30270610 19 37.52 +00 01 28.3          20.74GVEC090I52
         K21C02O |C2021 02 08.31846 10 19 10.63 +00 00 17.0          21.2 VuEC090807
         K21C02O |C2021 02 08.32281 10 19 04.58 -00 00 38.9          21.2 VuEC090807
         K21C02O |C2021 02 08.32716 10 18 58.55 -00 01 34.9          21.0 VuEC090807
    
    Observer details:
    807 Cerro Tololo Observatory, La Serena.  Observers T. Linder, R. Holmes.
        0.61-m f/6.5 astrograph + CCD.
    G96 Mt. Lemmon Survey.  Observers T. A. Pruyne, G. J. Leonard.  Measurers E.
        J. Christensen, B. Gray, D. Rankin, F. C. Shelly, 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, R. L. Seaman, K. W. Wierzchos.  1.5-m
        reflector + 10K 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 CO2                                                 Earth MOID = 0.0389 AU
    Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Veres
    M  10.87324              (2000.0)            P               Q
    n   0.76847249     Peri.   81.99483     +0.68032642     -0.67018385
    a   1.1804579      Node   319.32310     +0.35096246     +0.65324958
    e   0.4114388      Incl.   27.07465     +0.64341379     +0.35230470
    P   1.28           H   25.9           G   0.15           U   8
    Residuals in seconds of arc
    210205 G96  0.3-  0.4-    210207 G96  0.8-  0.4-    210208 I52  0.1+  0.6+
    210205 G96  0.3-  0.1-    210207 I52  0.4-  0.0     210208 I52  0.0   0.0
    210206 G96  1.1+  1.0+    210207 I52  0.3-  0.1+    210208 I52  0.1-  0.3+
    210206 G96  0.6-  0.7-    210207 I52  0.1-  0.1-    210208 807  0.6+  0.4-
    210206 G96  1.3+  0.7+    210207 I52  0.4-  0.0     210208 807  0.3+  0.2-
    210207 G96  0.5+  0.2+    210207 I52  0.4-  0.1-    210208 807  0.3+  0.2-
    210207 G96  0.2-  0.1-    210207 I52  0.2-  0.3-
    
    Ephemeris:
    2021 CO2                 a,e,i = 1.18, 0.41, 27                  q = 0.6948
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2021 01 09    18 35 14.0 +26 57 08   0.2660  0.8389    50.3   115.6    27.2
    ...
    2021 01 24    17 26 35.2 +31 56 23   0.1240  0.9422    66.7   106.4    25.2
    ...
    2021 02 01    14 45 18.2 +30 44 22   0.06174 0.9993   101.3    75.2    22.5
    ...
    2021 02 07    10 52 48.2 +05 19 35   0.06082 1.0419   155.6    23.0    21.0
    2021 02 08    10 26 37.0 +01 09 56   0.06649 1.0490   159.6    19.1    21.1
    2021 02 09    10 04 54.4 -02 17 30   0.07320 1.0560   160.9    17.8    21.3
    ...
    2021 02 15    08 52 33.6 -13 02 02   0.1251  1.0979   150.0    26.7    22.8
    ...
    2021 02 23    08 18 46.2 -17 06 20   0.2058  1.1522   138.8    34.5    24.2
    ...
    2021 03 10    08 04 07.6 -18 20 47   0.3682  1.2480   126.6    39.7    25.8
    
    M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-C90
    


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