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    • MPEC 2011-U38 : 2011 UK21

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    M.P.E.C. 2011-U38                                Issued 2011 Oct. 21, 13:01 UT

     The Minor Planet Electronic Circulars contain information on unusual
         minor planets and routine data on comets.  They are published
   on behalf of Commission 20 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

                                   2011 UK21

Observations:
     K11U21K* C2011 10 20.44274 04 30 40.60 -04 00 41.6          19.4 VrEU038703
     K11U21K  C2011 10 20.44839 04 30 48.70 -03 59 00.3          19.1 VrEU038703
     K11U21K  C2011 10 20.45405 04 30 56.80 -03 57 19.5          19.1 VrEU038703
     K11U21K  C2011 10 20.45970 04 31 05.01 -03 55 36.8          19.2 VrEU038703
     K11U21K  C2011 10 20.49282 04 31 53.11 -03 45 36.8          18.4 VrEU038703
     K11U21K  C2011 10 20.49397 04 31 54.76 -03 45 15.9          18.8 VrEU038703
     K11U21K  C2011 10 20.49513 04 31 56.46 -03 44 55.2          19.1 VrEU038703
     K11U21K  C2011 10 20.49630 04 31 58.04 -03 44 34.8          19.2 VrEU038703
     K11U21K KC2011 10 21.08386 04 47 42.80 -00 41 32.3                tEU038204
     K11U21K KC2011 10 21.09020 04 47 52.69 -00 39 29.4          19.1 RtEU038204
     K11U21K KC2011 10 21.09541 04 48 00.81 -00 37 48.1                tEU038204
     K11U21K KC2011 10 21.10197 04 48 11.02 -00 35 40.7                tEU038204
     K11U21K KC2011 10 21.26309 04 52 42.12 +00 23 03.1          19.4 RcEU038821
     K11U21K KC2011 10 21.26471 04 52 44.65 +00 23 34.6          19.2 RcEU038821
     K11U21K KC2011 10 21.26641 04 52 47.28 +00 24 08.8          19.6 RcEU038821
     K11U21K KC2011 10 21.37383804 55 43.04 +00 53 59.0          19.8 VtEU038H21
     K11U21K KC2011 10 21.37721504 55 48.41 +00 55 06.7          19.6 VtEU038H21
     K11U21K KC2011 10 21.38069504 55 53.89 +00 56 16.0          19.5 VtEU038H21
     K11U21K KC2011 10 21.38399004 55 59.13 +00 57 22.2          19.0 VtEU038H21
     K11U21K KC2011 10 21.40867504 56 40.52 +01 05 37.6          18.6 RuEU038H36
     K11U21K KC2011 10 21.41191904 56 45.71 +01 06 42.6          19.0 RuEU038H36
     K11U21K KC2011 10 21.41513004 56 50.79 +01 07 46.5          19.1 RuEU038H36

Observer details:
204 Schiaparelli Observatory.  Observer L. Buzzi.  0.60-m f/4.64 reflector
    + CCD.
703 Catalina Sky Survey.  Observer R. E. Hill.  Measurers J. D. Ahern,
    E. C. Beshore, A. Boattini, G. J. Garradd, A. R. Gibbs, P. Tricarico,
    A. D. Grauer, R. E. Hill, R. A. Kowalski, S. M. Larson, R. H. McNaught.
    0.68-m Schmidt + CCD.
821 Cordoba-Bosque Alegre.  Observers C. Colazo, P. Guzzo.  Measurer C. Colazo.
    1.54-m f/4.8 reflector + CCD.
H21 Astronomical Research Observatory, Westfield.  Observer R. Holmes.
    Measurers T. Vorobjov, L. Buzzi, S. Foglia.  0.61-m f/4.0 astrograph + CCD.
H36 Sandlot Observatory, Scranton.  Observer G. Hug.  0.56-m reflector + CCD.

Orbital elements:
2011 UK21                                                Earth MOID = 0.0078 AU
Epoch 2011 Aug. 27.0 TT = JDT 2455800.5                 MPC
M 325.49402              (2000.0)            P               Q
n   0.43773761     Peri.   23.22168     +0.55633286     -0.82775627
a   1.7178826      Node    33.10847     +0.73993071     +0.45355928
e   0.4295811      Incl.    7.66885     +0.37814852     +0.33030824
P   2.25           H   25.1           G   0.15           U   6
Residuals in seconds of arc
111020 703  0.2+  0.7+    111021 204  0.2-  0.4+    111021 H21  0.1+  0.4+
111020 703  0.3-  0.2+    111021 204  0.2+  0.2+    111021 H21  0.6-  0.3+
111020 703  1.2-  1.0-    111021 204  0.4+  0.3+    111021 H21  0.5-  0.7+
111020 703  0.3-  0.2-    111021 204  0.4+  0.3+    111021 H36  0.4+  0.0
111020 703  0.9+  0.3+    111021 821  0.2-  0.7-    111021 H36  0.7+  0.1+
111020 703  0.5+  0.4+    111021 821  0.2-  1.2-    111021 H36  0.2+  0.2-
111020 703  0.7+  0.0     111021 821  0.7-  0.7-
111020 703  1.2-  0.8-    111021 H21  0.0   0.0

Ephemeris:
2011 UK21                a,e,i = 1.72, 0.43, 8                   q = 0.9799
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2011 09 21    01 00 29.0 -29 26 48   0.1636  1.1450   147.1    28.5    22.7
...
2011 10 06    01 40 43.4 -28 46 47   0.08740 1.0717   143.8    33.4    21.4
...
2011 10 14    02 37 48.4 -22 57 43   0.05182 1.0395   143.0    35.3    20.2
...
2011 10 20    04 19 37.7 -06 06 43   0.03187 1.0192   136.3    42.4    19.3
2011 10 21    04 45 23.7 -01 05 14   0.03000 1.0162   132.6    46.2    19.3
2011 10 22    05 13 42.8 +04 29 33   0.02882 1.0133   127.8    50.9    19.3
...
2011 10 28    08 10 52.0 +31 29 13   0.03679 0.9982    95.9    82.0    20.8
...
2011 11 05    10 12 11.1 +38 23 41   0.06686 0.9849    82.2    93.9    22.5
...
2011 11 20    11 21 59.7 +38 18 00   0.1298  0.9821    83.5    89.0    23.8

A. U. Tomatic                (C) Copyright 2011 MPC           M.P.E.C. 2011-U38

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