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Minor Planet Center

MPEC 2009-Y20 : 2009 WE253

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M.P.E.C. 2009-Y20                                Issued 2009 Dec. 17, 14:34 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 WE253

Observations:
     K09WP3E* C2009 11 19.46066 09 07 37.45 +21 22 35.2          19.7 V EY020G96
     K09WP3E  C2009 11 19.46649 09 07 37.63 +21 22 29.9          19.8 V EY020G96
     K09WP3E  C2009 11 19.47234 09 07 37.84 +21 22 24.8          19.8 V EY020G96
     K09WP3E  C2009 11 19.47818 09 07 38.06 +21 22 19.5          19.6 V EY020G96
     K09WP3E  C2009 12 10.12697 09 08 33.98 +16 47 49.4          19.3 V EY020J75
     K09WP3E  C2009 12 10.13911 09 08 33.54 +16 47 41.8          19.5 V EY020J75
     K09WP3E  C2009 12 10.15183 09 08 33.11 +16 47 31.8          19.4 V EY020J75
     K09WP3E  C2009 12 17.41904 09 03 08.02 +15 30 17.3          19.1 V EY020G96
     K09WP3E  C2009 12 17.42603 09 03 07.59 +15 30 13.5          19.4 V EY020G96
     K09WP3E  C2009 12 17.43308 09 03 07.16 +15 30 09.6          19.3 V EY020G96
     K09WP3E  C2009 12 17.44020 09 03 06.73 +15 30 05.3          19.6 V EY020G96
     K09WP3E  C2009 12 17.47087 09 03 04.84 +15 29 47.1          19.0 R EY020H01
     K09WP3E  C2009 12 17.47841 09 03 04.37 +15 29 42.7          19.0 R EY020H01
     K09WP3E  C2009 12 17.48690 09 03 03.86 +15 29 37.6          19.0 R EY020H01
     K09WP3E  C2009 12 17.49405 09 03 03.43 +15 29 33.3          19.1 R EY020H01
     K09WP3E  C2009 12 17.53913 09 03 00.73 +15 29 06.2          19.2 R EY020H01
     K09WP3E  C2009 12 17.54528 09 03 00.35 +15 29 02.5          19.0 R EY020H01
     K09WP3E  C2009 12 17.55016 09 03 00.07 +15 28 59.6          19.2 R EY020H01

Observer details:
G96 Mt. Lemmon Survey.  Observers S. M. Larson, A. R. Gibbs.  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.
J75 OAM Observatory, La Sagra.  Observers S. Sanchez, J. Nomen, R. Stoss,
    W. K. Y. Yeung, J. Rodriguez.  0.45-m f/2.8 reflector + CCD.

Orbital elements:
2009 WE253                                               Earth MOID = 0.2727 AU
Epoch 2010 Jan. 4.0 TT = JDT 2455200.5                  MPC
M  27.96138              (2000.0)            P               Q
n   0.23619794     Peri.  105.62017     +0.85104991     -0.48515602
a   2.5919024      Node   283.77356     +0.36654299     +0.82279168
e   0.5491317      Incl.   11.93423     +0.37597909     +0.29603630
P   4.17           H   17.7           G   0.15           U   5
Residuals in seconds of arc
091119 G96  0.1+  0.0     091210 J75  0.3+  0.7-    091217 H01  0.1-  0.3+
091119 G96  0.2-  0.1-    091217 G96  0.1+  0.6-    091217 H01  0.1-  0.2+
091119 G96  0.1-  0.1+    091217 G96  0.0   0.3-    091217 H01  0.1-  0.2+
091119 G96  0.2+  0.0     091217 G96  0.0   0.1-    091217 H01  0.1+  0.1+
091210 J75  0.2-  0.0     091217 G96  0.0   0.1-    091217 H01  0.1-  0.1+
091210 J75  0.2-  0.7+    091217 H01  0.1+  0.2+    091217 H01  0.1+  0.1+

Ephemeris:
2009 WE253               a,e,i = 2.59, 0.55, 12                  q = 1.1686
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2009 12 15    09 05.25   +15 54.9    0.786    1.599   128.9    28.6    19.5
2009 12 25    08 54.65   +14 21.5    0.785    1.668   141.0    21.8    19.3
2010 01 04    08 40.17   +13 09.2    0.800    1.738   153.9    14.4    19.2
2010 01 14    08 23.92   +12 17.3    0.837    1.808   166.4     7.3    19.1
2010 01 24    08 08.40   +11 43.7    0.899    1.878   171.5     4.4    19.2
2010 02 03    07 55.69   +11 24.7    0.986    1.948   162.3     8.8    19.7
2010 02 13    07 46.88   +11 16.2    1.096    2.017   151.0    13.7    20.2
2010 02 23    07 42.27   +11 13.6    1.227    2.086   140.3    17.6    20.7
2010 03 05    07 41.52   +11 13.0    1.375    2.154   130.4    20.5    21.1
2010 03 15    07 44.04   +11 11.4    1.536    2.220   121.2    22.5    21.4
2010 03 25    07 49.25   +11 06.6    1.707    2.286   112.7    23.7    21.8

Timothy B. Spahr             (C) Copyright 2009 MPC           M.P.E.C. 2009-Y20

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