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  • MPEC 2021-R303 : 2021 RR12

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    M.P.E.C. 2021-R303                           Issued 2021 September 13, 14:07 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 RR12                                
    
    
    Observations:
         K21R12R*HC2021 09 12.30692623 10 04.38 -08 39 04.5                VER303G96
         K21R12R HC2021 09 12.32149923 10 14.36 -08 40 01.2          21.15GVER303G96
         K21R12R HC2021 09 12.32674723 10 17.98 -08 40 21.6          21.38GVER303G96
         K21R12R HC2021 09 12.33197623 10 21.57 -08 40 41.8          20.68GVER303G96
         K21R12R mC2021 09 12.39053523 11 02.17 -08 44 28.7          21.25GVER303G96
         K21R12R mC2021 09 12.39094723 11 02.47 -08 44 30.4          21.18GVER303G96
         K21R12R mC2021 09 12.39135923 11 02.76 -08 44 31.9          21.06GVER303G96
         K21R12R mC2021 09 12.39177123 11 03.08 -08 44 33.5          21.14GVER303G96
         K21R12R 1C2021 09 12.99353 23 18 34.82 -09 24 32.5          21.8 VVER303033
         K21R12R 1C2021 09 12.99504 23 18 35.89 -09 24 37.8          22.0 VVER303033
         K21R12R 1C2021 09 12.99655 23 18 36.97 -09 24 43.9          21.6 VVER303033
         K21R12R 1C2021 09 12.99821 23 18 38.19 -09 24 50.7          21.9 VVER303033
         K21R12R |C2021 09 13.12185 23 20 16.40 -09 30 29.0          21.2 VuER303807
         K21R12R |C2021 09 13.12649 23 20 19.79 -09 30 47.9          21.2 VuER303807
         K21R12R |C2021 09 13.13117 23 20 23.19 -09 31 06.2          21.3 VuER303807
         K21R12R  C2021 09 13.24115923 21 47.31 -09 40 28.5          20.78GVER303G96
         K21R12R  C2021 09 13.25908123 22 00.33 -09 41 40.5          20.74GVER303G96
         K21R12R  C2021 09 13.26381123 22 03.72 -09 41 59.3          21.16GVER303G96
         K21R12R  C2021 09 13.26852223 22 07.16 -09 42 18.2          21.16GVER303G96
    
    Observer details:
    033 Karl Schwarzschild Observatory, Tautenburg.  Observers S. Melnikov, C.
        Hoegner, U. Laux, F. Ludwig, B. Stecklum.  Measurer B. Stecklum.  1.34-m
        f/3 Schmidt + CCD.
    807 Cerro Tololo Observatory, La Serena.  Observers T. Linder, R. Holmes, L.
        Horn.  0.61-m f/6.5 astrograph + CCD.
    G96 Mt. Lemmon Survey.  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.  1.5-m reflector + 10K CCD.
    
    Orbital elements:
    2021 RR12                                                Earth MOID = 0.0665 AU
    Epoch 2021 July 5.0 TT = JDT 2459400.5                  Veres                   
    M 335.94484              (2000.0)            P               Q                  
    n   0.28635472     Peri.  197.74079     +0.99502817     -0.09558440             
    a   2.2796411      Node   167.64350     +0.09959362     +0.95563547             
    e   0.5333250      Incl.    7.51151     -0.00023699     +0.27861170             
    P   3.44           H   26.54          G   0.15           U   8                  
    Residuals in seconds of arc
    210912 G96  0.7+  0.3-    210912 G96  0.4+  0.2+    210913 807  0.4+  0.3+
    210912 G96  0.1-  0.2-    210912 033  0.4+  0.2-    210913 G96  0.0   0.0
    210912 G96  0.0   0.1-    210912 033  0.1+  0.5+    210913 G96  0.2+  0.2-
    210912 G96  0.2-  0.0     210912 033  0.2-  0.3+    210913 G96  0.4-  0.1-
    210912 G96  0.2-  0.3+    210912 033  0.1+  0.1+    210913 G96  0.1-  0.2-
    210912 G96  0.1-  0.1+    210913 807  0.5-  0.1+
    210912 G96  0.1-  0.3+    210913 807  0.1+  0.2-
    
    Ephemeris:
    2021 RR12                a,e,i = 2.28, 0.53, 8                   q = 1.0639
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2021 08 14    20 42 01.5 +05 14 35   0.1870  1.1868   156.4    19.9    24.3
    ...
    2021 08 29    21 19 25.6 +02 06 36   0.1171  1.1200   159.0    18.8    23.1
    ...
    2021 09 06    22 06 48.6 -02 36 23   0.08806 1.0939   166.5    12.4    22.2
    ...
    2021 09 12    23 06 21.7 -08 17 47   0.07311 1.0794   174.7     4.9    21.4
    2021 09 13    23 18 40.2 -09 23 09   0.07143 1.0774   174.4     5.3    21.4
    2021 09 14    23 31 36.5 -10 29 23   0.07003 1.0755   173.0     6.6    21.4
    ...
    2021 09 20    00 57 37.9 -16 31 41   0.06790 1.0672   157.2    21.4    21.9
    ...
    2021 09 28    02 40 38.0 -20 12 14   0.08059 1.0639   138.6    38.6    22.7
    ...
    2021 10 13    04 13 37.9 -19 11 17   0.1282  1.0813   127.9    46.7    24.0
    
    M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-R303
    


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