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  • MPEC 2021-C128 : 2021 CG3

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    M.P.E.C. 2021-C128                             Issued 2021 February 9, 13:12 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 CG3                                 
    
    
    Observations:
         K21C03G* C2021 02 07.28491309 49 23.25 -01 00 24.2          20.40GVEC128G96
         K21C03G  C2021 02 07.29000409 49 22.59 -01 00 14.7          20.23GVEC128G96
         K21C03G  C2021 02 07.29510309 49 21.98 -01 00 04.8          20.53GVEC128G96
         K21C03G  C2021 02 07.30021109 49 21.34 -00 59 55.1          20.58GVEC128G96
         K21C03G KC2021 02 07.40737209 49 07.94 -00 56 28.9          20.39GVEC128I52
         K21C03G KC2021 02 07.40967609 49 07.65 -00 56 24.4          20.74GVEC128I52
         K21C03G KC2021 02 07.41198009 49 07.37 -00 56 19.8          20.25GVEC128I52
         K21C03G |C2021 02 08.24861 09 47 32.90 -00 28 01.0          20.9 VuEC128807
         K21C03G |C2021 02 08.25085 09 47 32.60 -00 27 56.5          20.8 VuEC128807
         K21C03G |C2021 02 08.25319 09 47 32.29 -00 27 52.0          20.6 VuEC128807
         K21C03G mC2021 02 08.26457909 47 32.41 -00 28 11.2          20.06GVEC128I52
         K21C03G mC2021 02 08.26569309 47 32.26 -00 28 09.1          20.30GVEC128I52
         K21C03G mC2021 02 08.26680709 47 32.07 -00 28 06.3          19.44GVEC128I52
         K21C03G mC2021 02 09.40774009 45 13.96 +00 11 45.9          20.45GVEC128I52
         K21C03G mC2021 02 09.41210309 45 13.40 +00 11 55.7                VEC128I52
         K21C03G mC2021 02 09.41645609 45 12.83 +00 12 05.4          20.27GVEC128I52
         K21C03G mC2021 02 09.42080909 45 12.25 +00 12 15.3          20.10GVEC128I52
    
    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.  Observer G. J. Leonard.  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.  1.5-m reflector + 10K CCD.
    I52 Steward Observatory, Mt. Lemmon Station.  Observers H. Groeller, D.
        Rankin.  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 CG3                                                 Earth MOID = 0.0358 AU
    Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Bell                    
    M 207.48585              (2000.0)            P               Q                  
    n   0.87284563     Peri.  112.81594     -0.01467423     +0.99793332             
    a   1.0843707      Node   156.08673     -0.96463825     +0.00233826             
    e   0.2194323      Incl.    8.87820     -0.26316860     -0.06421539             
    P   1.13           H   22.77          G   0.15           U   7                  
    Residuals in seconds of arc
    210207 G96  0.0-  0.1+    210207 I52  0.1+  0.0+    210208 I52  0.5-  0.5+
    210207 G96  0.4-  0.1-    210208 807  0.3+  0.1+    210209 I52  0.6-  0.6-
    210207 G96  0.0-  0.0+    210208 807  0.2+  0.1+    210209 I52  0.2-  0.2-
    210207 G96  0.0-  0.1-    210208 807  0.1+  0.1-    210209 I52  0.1+  0.0-
    210207 I52  0.0+  0.2-    210208 I52  0.3+  0.1+    210209 I52  0.3+  0.5+
    210207 I52  0.0-  0.1-    210208 I52  0.2+  0.0-
    
    Ephemeris:
    2021 CG3                 a,e,i = 1.08, 0.22, 9                   q = 0.8464
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2021 01 10    10 09 27.0 -06 37 45   0.3821  1.2658   130.6    36.1    22.7
    ...
    2021 01 25    10 06 08.5 -05 36 37   0.2868  1.2320   145.7    26.8    21.7
    ...
    2021 02 02    09 57 51.5 -03 23 24   0.2432  1.2109   155.5    19.7    21.1
    ...
    2021 02 08    09 48 02.1 -00 36 44   0.2149  1.1939   163.4    13.6    20.6
    2021 02 09    09 46 04.7 -00 02 26   0.2106  1.1910   164.7    12.6    20.5
    2021 02 10    09 44 01.8 +00 33 51   0.2064  1.1880   165.9    11.7    20.4
    ...
    2021 02 16    09 29 53.7 +04 54 14   0.1842  1.1697   169.8     8.6    20.0
    ...
    2021 02 24    09 06 45.0 +12 30 03   0.1629  1.1438   159.7    17.4    20.0
    ...
    2021 03 11    08 16 19.6 +29 37 38   0.1477  1.0917   128.6    45.3    20.5
    
    M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-C128
    


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