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IAU Minor Planet Center

Minor Planet Center

MPEC 2009-U105: 2009 UL20

The following Minor Planet Electronic Circular may be linked-to from your own Web pages, but must not otherwise be redistributed electronically.


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M.P.E.C. 2009-U105                               Issued 2009 Oct. 26, 18:41 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 http://www.cfa.harvard.edu/iau/mpc.html  ISSN 1523-6714

                                   2009 UL20

Observations:
     K09U20L* C2009 10 25.23483 02 08 33.25 +08 23 12.6          20.2 V EU105G96
     K09U20L  C2009 10 25.24166 02 08 34.47 +08 23 16.2          21.0 V EU105G96
     K09U20L  C2009 10 25.24841 02 08 35.55 +08 23 19.0          21.3 V EU105G96
     K09U20L  C2009 10 25.25516 02 08 36.81 +08 23 22.1          21.1 V EU105G96
     K09U20L  C2009 10 25.36691 02 08 56.11 +08 24 10.7          20.8 V EU105G96
     K09U20L  C2009 10 25.36765 02 08 56.22 +08 24 11.2          20.8 V EU105G96
     K09U20L  C2009 10 25.36840 02 08 56.36 +08 24 11.4          20.6 V EU105G96
     K09U20L  C2009 10 25.36914 02 08 56.43 +08 24 11.8          20.3 V EU105G96
     K09U20L  C2009 10 25.38656 02 08 59.53 +08 24 19.2          20.5 V EU105G96
     K09U20L  C2009 10 25.38724 02 08 59.67 +08 24 19.6          20.4 V EU105G96
     K09U20L  C2009 10 25.38794 02 08 59.78 +08 24 19.8          20.4 V EU105G96
     K09U20L  C2009 10 25.38865 02 08 59.89 +08 24 19.8          20.6 V EU105G96
     K09U20L  C2009 10 26.17091 02 11 30.90 +08 29 54.9                 EU105291
     K09U20L  C2009 10 26.17477 02 11 31.61 +08 29 57.4                 EU105291
     K09U20L  C2009 10 26.17866 02 11 32.22 +08 29 58.3                 EU105291
     K09U20L  C2009 10 26.19546 02 11 34.89 +08 30 04.5          19.7 R EU105H01
     K09U20L  C2009 10 26.19923 02 11 35.53 +08 30 06.0          19.7 R EU105H01
     K09U20L  C2009 10 26.20317 02 11 36.19 +08 30 07.8          19.6 R EU105H01
     K09U20L  C2009 10 26.20812 02 11 37.01 +08 30 10.1          19.8 R EU105H01
     K09U20L  C2009 10 26.21289 02 11 37.85 +08 30 12.3          19.9 R EU105H01

Observer details:
291 LPL/Spacewatch II.  Observer T. H. Bressi.  1.8-m f/2.7 reflector + CCD.
G96 Mt. Lemmon Survey.  Observer A. Boattini.  Measurers E. C. Beshore,
    A. Boattini, G. J. Garradd, A. R. Gibbs, A. D. Grauer, R. E. Hill,
    R. A. Kowalski, S. M. Larson, R. H. McNaught.  1.5-m reflector + CCD.
H01 Magdalena Ridge Observatory, Socorro.  Observer W. H. Ryan.  2.4-m f/8.9
    reflector + CCD.

Orbital elements:
2009 UL20                                                Earth MOID = 0.1139 AU
Epoch 2010 Jan. 4.0 TT = JDT 2455200.5                  MPC
M  24.21840              (2000.0)            P               Q
n   0.25236126     Peri.  171.73369     +0.99392787     -0.10967632
a   2.4800147      Node   194.57187     +0.09883297     +0.92524882
e   0.5505535      Incl.    2.01810     +0.04836775     +0.36316075
P   3.91           H   23.8           G   0.15           U   8
Residuals in seconds of arc
091025 G96  0.1+  0.5-    091025 G96  0.9-  0.1+    091026 291  0.4-  0.2-
091025 G96  0.5+  0.0     091025 G96  0.1+  0.2+    091026 H01  0.1+  0.2-
091025 G96  0.9-  0.2-    091025 G96  0.4+  0.4+    091026 H01  0.1+  0.4-
091025 G96  0.4+  0.2-    091025 G96  0.2+  0.3+    091026 H01  0.0   0.4-
091025 G96  0.1+  0.1-    091025 G96  0.0   0.0     091026 H01  0.2-  0.3-
091025 G96  0.2-  0.1+    091026 291  0.2-  0.1-    091026 H01  0.4+  0.2-
091025 G96  0.0   0.0     091026 291  0.5+  0.7+

Ephemeris:
2009 UL20                a,e,i = 2.48, 0.55, 2                   q = 1.1146
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2009 10 26    02 10.95   +08 29.1    0.164    1.157   175.5     3.9    20.5
2009 11 05    02 36.06   +09 31.6    0.204    1.195   173.8     5.1    21.2
2009 11 15    02 52.47   +10 26.2    0.255    1.241   169.5     8.4    21.9
2009 11 25    03 04.35   +11 22.2    0.318    1.295   163.2    12.7    22.6

Sonia Keys                   (C) Copyright 2009 MPC           M.P.E.C. 2009-U105

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