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  • MPEC 2021-R86 : 2021 RU

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    M.P.E.C. 2021-R86                             Issued 2021 September 5, 17:15 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 RU                                 
    
    
    Observations:
         K21R00U*!C2021 09 04.09912 23 37 30.46 -02 29 20.4          22.2 V ER086W84
         K21R00U !C2021 09 04.11289 23 37 33.76 -02 29 02.8                 ER086W84
         K21R00U !C2021 09 04.11633 23 37 34.52 -02 28 58.6                 ER086W84
         K21R00U !C2021 09 04.13009 23 37 37.81 -02 28 41.2                 ER086W84
         K21R00U !C2021 09 04.13353 23 37 38.59 -02 28 37.0                 ER086W84
         K21R00U !C2021 09 04.16448 23 37 45.84 -02 27 57.8                 ER086W84
         K21R00U !C2021 09 04.16791 23 37 46.59 -02 27 53.6                 ER086W84
         K21R00U !C2021 09 04.18168 23 37 49.85 -02 27 35.8                 ER086W84
         K21R00U !C2021 09 04.18510 23 37 50.59 -02 27 31.9                 ER086W84
         K21R00U 1C2021 09 04.99178 23 41 22.95 -02 11 13.3          21.9 VVER086033
         K21R00U 1C2021 09 04.99540 23 41 23.84 -02 11 08.6          22.3 VVER086033
         K21R00U 1C2021 09 04.99904 23 41 24.81 -02 11 03.4          22.7 VVER086033
         K21R00U |C2021 09 05.19109 23 42 18.35 -02 05 15.0          21.8 VuER086807
         K21R00U |C2021 09 05.19663 23 42 19.74 -02 05 07.2          21.7 VuER086807
         K21R00U |C2021 09 05.20217 23 42 21.11 -02 04 59.3          21.6 VuER086807
    
    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.  1.00-m f/10.0 astrograph + CCD.
    W84 Cerro Tololo-DECam.  Observer .  Measurer F. Valdes.  4.0-m CTIO
        reflector.
    
    Orbital elements:
    2021 RU                                                  Earth MOID = 0.0097 AU
    Epoch 2021 July 5.0 TT = JDT 2459400.5                  Veres                   
    M 325.46470              (2000.0)            P               Q                  
    n   0.32509488     Peri.  230.64818     +0.83785285     -0.54588428             
    a   2.0947360      Node   162.43600     +0.50444701     +0.77169897             
    e   0.5227424      Incl.    0.68338     +0.20865240     +0.32632967             
    P   3.03           H   25.49          G   0.15           U   8                  
    Residuals in seconds of arc
    210904 W84  0.7+  0.1+    210904 W84  0.2-  0.1-    210904 033  0.2-  0.1-
    210904 W84  1.0+  0.3+    210904 W84  1.0-  0.3-    210904 033  0.4+  0.2+
    210904 W84  0.1+  0.2+    210904 W84  0.4-  0.0     210905 807  0.1+  0.2-
    210904 W84  0.6+  0.2+    210904 W84  1.3-  0.5-    210905 807  0.0   0.0
    210904 W84  0.2+  0.0     210904 033  0.2+  0.1+    210905 807  0.3-  0.2+
    
    Ephemeris:
    2021 RU                  a,e,i = 2.09, 0.52, 1                   q = 0.9997
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2021 08 06    22 36 00.9 -07 41 48   0.3352  1.3271   155.7    18.3    24.7
    ...
    2021 08 21    22 57 51.0 -05 47 34   0.2208  1.2258   164.4    12.8    23.4
    ...
    2021 08 29    23 16 15.1 -04 15 26   0.1694  1.1758   167.3    10.9    22.7
    ...
    2021 09 04    23 37 02.3 -02 31 58   0.1351  1.1409   167.7    10.9    22.1
    2021 09 05    23 41 24.8 -02 10 09   0.1297  1.1353   167.5    11.1    22.0
    2021 09 06    23 46 07.5 -01 46 40   0.1245  1.1298   167.2    11.4    21.9
    ...
    2021 09 12    00 23 43.5 +01 20 57   0.09593 1.0987   163.2    15.4    21.5
    ...
    2021 09 20    01 54 32.6 +08 30 59   0.06848 1.0625   147.2    30.8    21.1
    ...
    2021 10 05    06 10 33.6 +18 25 56   0.07675 1.0152    99.1    76.6    22.6
    
    M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-R86
    


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