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  • MPEC 2021-U224 : 2021 UO4

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    M.P.E.C. 2021-U224                             Issued 2021 October 30, 22:25 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 UO4                                 
    
    
    Observations:
         K21U04O* C2021 10 30.06979 03 25 17.98 +20 18 51.7          20.2 RoEU224K88
         K21U04O  C2021 10 30.07176 03 25 16.40 +20 19 26.3          20.0 RoEU224K88
         K21U04O  C2021 10 30.09012 03 25 01.15 +20 24 57.8          20.1 RoEU224K88
         K21U04O  C2021 10 30.09325 03 24 58.54 +20 25 55.7          20.1 RoEU224K88
         K21U04O  C2021 10 30.09978 03 24 53.17 +20 27 51.6          20.4 RoEU224K88
         K21U04O  C2021 10 30.10059 03 24 52.41 +20 28 07.4          20.2 RoEU224K88
         K21U04O  C2021 10 30.10468 03 24 49.01 +20 29 21.9          20.2 RoEU224K88
         K21U04O KC2021 10 30.11109 03 24 43.74 +20 31 17.3          20.5 RoEU224K88
         K21U04O KC2021 10 30.11651 03 24 39.21 +20 32 54.2          20.0 RoEU224K88
         K21U04O KC2021 10 30.12857 03 24 29.36 +20 36 32.2          20.1 RoEU224K88
         K21U04O 1C2021 10 30.14201 03 24 19.64 +20 40 30.6          20.6 VVEU224033
         K21U04O 1C2021 10 30.14281 03 24 19.00 +20 40 45.3          20.1 VVEU224033
         K21U04O 1C2021 10 30.14362 03 24 18.33 +20 40 59.3          20.2 VVEU224033
         K21U04O hC2021 10 30.15639403 24 06.82 +20 45 02.4          20.3 GVEU224L01
         K21U04O IC2021 10 30.15846403 24 05.09 +20 45 39.6          20.2 GVEU224L01
         K21U04O IC2021 10 30.16052803 24 03.41 +20 46 17.2          20.1 GVEU224L01
         K21U04O hC2021 10 30.16299203 24 01.42 +20 47 00.8          20.2 GVEU224L01
         K21U04O  C2021 10 30.20280903 23 47.70 +20 59 47.1          19.8 GVEU224H01
         K21U04O  C2021 10 30.20563603 23 45.34 +21 00 38.8          20.0 GVEU224H01
         K21U04O  C2021 10 30.21570703 23 36.91 +21 03 43.8          19.6 GVEU224H01
         K21U04O  C2021 10 30.22345403 23 30.40 +21 06 05.8          19.8 GVEU224H01
         K21U04O KC2021 10 30.83817203 15 30.81 +24 04 45.3          20.3 GVEU224J95
         K21U04O KC2021 10 30.85498903 15 17.34 +24 09 36.9          20.0 GVEU224J95
         K21U04O KC2021 10 30.86891 03 15 04.30 +24 13 56.0          20.4 GXEU224G02
         K21U04O KC2021 10 30.87976 03 14 55.22 +24 17 03.5                XEU224G02
         K21U04O KC2021 10 30.89063 03 14 46.26 +24 20 08.1                XEU224G02
    
    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.
    G02 KYSUCE Observatory, Kysucke Nove Mesto.  Observer M. Urbanik.  0.40-m
        f/4.5 Corrected Dall-Kirkham + CCD.
    H01 Magdalena Ridge Observatory, Socorro.  Observers W. H. Ryan, E. V. Ryan.
        Measurer W. H. Ryan.  2.4-m f/8.9 Ritchey-Chretien + CCD.
    J95 Great Shefford.  Observer P. Birtwhistle.  0.41-m f/6.3 Schmidt-Cassegrain
        + CCD.
    K88 GINOP-KHK, Piszkesteto.  Observer K. Sarneczky.  0.60-m Schmidt + CCD.
    L01 Visnjan Observatory, Tican.  Observer K. Korlevic.  1.0-m f/2.9 reflector
        + CCD.
    
    Orbital elements:
    2021 UO4                                                 Earth MOID = 0.0366 AU
    Epoch 2021 July 5.0 TT = JDT 2459400.5                  Veres                   
    M 322.85729              (2000.0)            P               Q                  
    n   0.89443017     Peri.  280.94767     +0.72379879     +0.67274816             
    a   1.0668542      Node    37.06396     -0.49072617     +0.65814463             
    e   0.1057607      Incl.   14.74304     -0.48508055     +0.33801709             
    P   1.10           H   26.27          G   0.15           U   7                  
    Residuals in seconds of arc
    211030 K88  0.6-  1.2+    211030 K88  0.0   0.0     211030 H01  0.0   0.2-
    211030 K88  0.4+  0.1-    211030 033  0.1-  0.3+    211030 H01  0.1+  0.1-
    211030 K88  0.8+  1.1-    211030 033  0.1+  0.6+    211030 H01  0.0   0.1-
    211030 K88  0.7+  0.2+    211030 033  0.0   0.0     211030 J95  0.2-  0.2-
    211030 K88  1.3+  1.9-    211030 L01  0.1+  0.2-    211030 J95  0.2+  0.2+
    211030 K88  0.0   0.7-    211030 L01  0.4-  0.1-    211030 G02  0.7+  0.4-
    211030 K88  0.2-  0.1-    211030 L01  0.3-  0.6+    211030 G02  0.7-  0.9+
    211030 K88  0.1+  0.3-    211030 L01  0.0   0.1+    211030 G02  0.2+  0.8-
    211030 K88  0.8-  1.0-    211030 H01  0.0   0.0
    
    Ephemeris:
    2021 UO4                 a,e,i = 1.07, 0.11, 15                  q = 0.9540
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2021 09 30    07 20 02.5 -54 37 49   0.1287  0.9870    79.9    92.8    25.1
    ...
    2021 10 15    06 05 01.9 -41 56 29   0.07012 1.0093    97.9    78.1    23.2
    ...
    2021 10 23    04 52 40.8 -18 10 40   0.04555 1.0225   126.1    51.8    21.5
    ...
    2021 10 29    03 39 21.0 +14 40 16   0.04206 1.0328   159.0    20.2    20.5
    2021 10 30    03 26 18.4 +19 58 55   0.04335 1.0345   162.2    17.1    20.4
    2021 10 31    03 13 17.0 +24 52 05   0.04513 1.0362   163.5    15.8    20.5
    ...
    2021 11 06    02 01 07.6 +44 08 38   0.06321 1.0467   150.3    28.0    21.6
    ...
    2021 11 14    00 55 46.0 +53 08 28   0.09684 1.0609   135.7    40.7    22.9
    ...
    2021 11 29    00 11 13.8 +56 39 51   0.1674  1.0869   123.0    49.5    24.4
    
    M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-U224
    


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