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  • MPEC 2021-C61 : 2021 CR1

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    M.P.E.C. 2021-C61                              Issued 2021 February 7, 10:38 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 CR1                                 
    
    
    Observations:
         K21C01R* C2021 02 05.38014110 31 24.84 +12 12 26.9          20.83GVEC061G96
         K21C01R  C2021 02 05.38526910 31 23.89 +12 13 05.3          21.71GVEC061G96
         K21C01R  C2021 02 05.39039210 31 22.95 +12 13 43.7          21.05GVEC061G96
         K21C01R  C2021 02 05.39551110 31 21.95 +12 14 21.9          21.04GVEC061G96
         K21C01R KC2021 02 05.49047610 31 04.28 +12 26 15.8          21.02GVEC061I52
         K21C01R KC2021 02 05.49473410 31 03.50 +12 26 47.3          21.30GVEC061I52
         K21C01R KC2021 02 05.49898910 31 02.75 +12 27 19.8          20.65GVEC061I52
         K21C01R KC2021 02 06.27479810 28 55.45 +14 11 00.4          20.70GVEC061I52
         K21C01R KC2021 02 06.27836110 28 54.79 +14 11 30.3          21.29GVEC061I52
         K21C01R |C2021 02 06.33956 10 28 38.16 +14 21 36.3          20.9 VuEC061807
         K21C01R |C2021 02 06.34425 10 28 37.18 +14 22 16.1          21.4 VuEC061807
         K21C01R |C2021 02 06.34873 10 28 36.27 +14 22 53.3          20.7 VuEC061807
         K21C01R KC2021 02 06.40411610 28 25.94 +14 29 10.7          21.1 VuEC061H21
         K21C01R KC2021 02 06.40936010 28 24.84 +14 29 55.3          21.3 VuEC061H21
         K21C01R KC2021 02 06.41722410 28 23.17 +14 31 02.6          21.1 VuEC061H21
         K21C01R KC2021 02 07.29276410 25 30.31 +16 44 30.6          20.81GVEC061I52
         K21C01R KC2021 02 07.29395310 25 30.01 +16 44 42.4          20.60GVEC061I52
         K21C01R KC2021 02 07.29514110 25 29.70 +16 44 53.6          20.13GVEC061I52
    
    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 T. A. Pruyne.  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.
    H21 Astronomical Research Observatory, Westfield.  Observer R. Holmes.
        Measurers S. Foglia, L. Buzzi, T. Linder, R. Holmes.  0.76-m f/3.0
        astrograph + CCD.
    I52 Steward Observatory, Mt. Lemmon Station.  Observers K. W. Wierzchos, 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 CR1                                                 Earth MOID = 0.0471 AU
    Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Bell                    
    M 195.97545              (2000.0)            P               Q                  
    n   1.21053980     Peri.  144.77724     +0.21530200     +0.96513912             
    a   0.8719334      Node   137.09927     -0.93862376     +0.24658380             
    e   0.4439042      Incl.   12.62908     -0.26950043     -0.08776619             
    P   0.81           H   25.09          G   0.15           U   7                  
    Residuals in seconds of arc
    210205 G96  0.1+  0.0+    210205 I52  0.1-  0.1+    210206 H21  0.4-  0.2+
    210205 G96  0.3+  0.0-    210206 I52  0.3-  0.3+    210206 H21  0.3-  0.1+
    210205 G96  0.7+  0.0+    210206 I52  1.0+  0.1-    210206 H21  0.5-  0.4+
    210205 G96  0.1-  0.1-    210206 807  0.1-  0.3-    210207 I52  0.1+  0.0-
    210205 I52  0.4-  0.3+    210206 807  0.2+  0.1-    210207 I52  0.1+  0.2+
    210205 I52  0.4-  0.2-    210206 807 (0.9+  0.9-)   210207 I52  0.0-  0.1-
    
    Ephemeris:
    2021 CR1                 a,e,i = 0.87, 0.44, 13                  q = 0.4849
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2021 01 08    10 40 50.3 -05 03 56   0.3461  1.2074   123.0    43.1    24.9
    ...
    2021 01 23    10 45 16.0 -01 41 37   0.2138  1.1535   138.7    34.3    23.5
    ...
    2021 01 31    10 40 50.1 +04 04 24   0.1484  1.1168   150.6    25.7    22.4
    ...
    2021 02 06    10 29 42.2 +13 33 27   0.1038  1.0855   162.6    15.8    21.2
    2021 02 07    10 26 30.9 +15 58 30   0.09697 1.0800   164.5    14.1    21.0
    2021 02 08    10 22 42.2 +18 44 44   0.09044 1.0744   166.0    12.8    20.8
    ...
    2021 02 14    09 30 11.9 +45 52 04   0.06060 1.0389   147.0    31.2    20.4
    ...
    2021 02 22    01 56 19.4 +65 52 48   0.06852 0.9864    85.8    90.3    22.4
    ...
    2021 03 09    23 41 56.2 +34 51 08   0.1642  0.8732    39.9   133.2    26.9
    
    M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-C61
    


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