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  • MPEC 2021-S18 : 2021 RE20

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    M.P.E.C. 2021-S18                            Issued 2021 September 17, 11:46 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 RE20                                
    
    
    Observations:
         K21R20E* C2021 09 15.34964900 23 03.53 +31 15 23.1          21.65GVES018G96
         K21R20E  C2021 09 15.35620700 23 02.22 +31 14 59.7          21.54GVES018G96
         K21R20E  C2021 09 15.36148500 23 01.24 +31 14 40.8          21.22GVES018G96
         K21R20E  C2021 09 15.36673800 23 00.17 +31 14 22.2          21.22GVES018G96
         K21R20E mC2021 09 15.46168600 22 41.85 +31 08 38.5          22.02GVES018G96
         K21R20E mC2021 09 15.46290900 22 41.62 +31 08 34.0          21.63GVES018G96
         K21R20E mC2021 09 15.46413200 22 41.39 +31 08 29.5          21.74GVES018G96
         K21R20E KC2021 09 16.23989700 20 34.06 +30 22 35.8          21.2 VuES018H21
         K21R20E KC2021 09 16.25595400 20 31.02 +30 21 38.8          21.0 VuES018H21
         K21R20E KC2021 09 17.25653900 17 46.05 +29 22 09.4          21.8 VuES018H21
         K21R20E KC2021 09 17.27007300 17 43.54 +29 21 21.4          21.4 VuES018H21
         K21R20E KC2021 09 17.28360400 17 41.04 +29 20 33.0          21.5 VuES018H21
    
    Observer details:
    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.
    H21 Astronomical Research Observatory, Westfield.  Observer R. Holmes.
        Measurers T. Linder, R. Holmes, L. Horn.  0.81-m f/4.0 astrograph + CCD.
    
    Orbital elements:
    2021 RE20                                                Earth MOID = 0.0670 AU
    Epoch 2021 July 5.0 TT = JDT 2459400.5                  Veres                   
    M  29.32493              (2000.0)            P               Q                  
    n   0.88879196     Peri.   25.39403     -0.50074453     +0.86412932             
    a   1.0713613      Node   214.62014     -0.80852066     -0.48770858             
    e   0.1960711      Incl.    5.08474     -0.30911044     -0.12418077             
    P   1.11           H   24.32          G   0.15           U   8                  
    Residuals in seconds of arc
    210915 G96  0.0   0.2+    210915 G96  0.1+  0.3-    210916 H21  0.0   0.1-
    210915 G96  0.3-  0.1+    210915 G96  0.1+  0.2-    210917 H21  0.0   0.2-
    210915 G96  0.4+  0.0     210915 G96  0.0   0.3-    210917 H21  0.0   0.1+
    210915 G96  0.1-  0.1+    210916 H21  0.0   0.1+    210917 H21  0.0   0.2+
    
    Ephemeris:
    2021 RE20                a,e,i = 1.07, 0.20, 5                   q = 0.8613
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2021 08 18    01 59 43.9 +52 43 47   0.1346  1.0330    95.1    77.4    22.7
    ...
    2021 09 02    01 05 51.5 +43 08 15   0.1355  1.0823   119.6    54.2    22.1
    ...
    2021 09 10    00 39 13.9 +36 21 59   0.1385  1.1076   133.9    40.9    21.9
    ...
    2021 09 16    00 21 13.7 +30 37 01   0.1437  1.1259   144.8    31.0    21.7
    2021 09 17    00 18 27.8 +29 37 39   0.1449  1.1289   146.6    29.4    21.7
    2021 09 18    00 15 46.4 +28 38 03   0.1462  1.1319   148.3    27.8    21.6
    ...
    2021 09 24    00 01 19.4 +22 42 09   0.1562  1.1492   157.6    19.4    21.6
    ...
    2021 10 02    23 46 52.0 +15 22 10   0.1760  1.1710   163.7    13.9    21.7
    ...
    2021 10 17    23 34 38.5 +05 13 48   0.2331  1.2072   151.8    22.9    22.7
    
    M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-S18
    


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