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Minor Planet Center

MPEC 2009-S129: 2009 SP171

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M.P.E.C. 2009-S129                               Issued 2009 Sept. 29, 11:25 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 SP171

Observations:
     K09SH1P* C2009 09 28.20541 23 33 51.12 +37 46 38.1          20.7 V ES129G96
     K09SH1P  C2009 09 28.21134 23 33 50.43 +37 46 30.7          20.8 V ES129G96
     K09SH1P  C2009 09 28.21765 23 33 49.86 +37 46 22.2          20.0 V ES129G96
     K09SH1P  C2009 09 28.22392 23 33 49.06 +37 46 13.6          20.4 V ES129G96
     K09SH1P  C2009 09 28.32801 23 33 37.36 +37 43 53.9          20.1 V ES129G96
     K09SH1P  C2009 09 28.32870 23 33 37.26 +37 43 52.8          20.5 V ES129G96
     K09SH1P  C2009 09 28.32940 23 33 37.18 +37 43 51.6          20.2 V ES129G96
     K09SH1P  C2009 09 28.32995 23 33 37.11 +37 43 51.0          20.4 V ES129G96
     K09SH1P  C2009 09 28.33334 23 33 36.53 +37 43 45.1          20.7 R ES129H36
     K09SH1P  C2009 09 28.33432 23 33 36.57 +37 43 44.7          19.9 R ES129H01
     K09SH1P  C2009 09 28.33755 23 33 36.21 +37 43 40.3          19.9 R ES129H01
     K09SH1P  C2009 09 28.33951 23 33 35.93 +37 43 36.1          20.3 R ES129H36
     K09SH1P  C2009 09 28.34183 23 33 35.74 +37 43 34.5          19.8 R ES129H01
     K09SH1P  C2009 09 28.34569 23 33 35.27 +37 43 26.4          20.1 R ES129H36
     K09SH1P  C2009 09 29.18130 23 32 06.90 +37 24 20.9          20.5 V ES129G96
     K09SH1P  C2009 09 29.18767 23 32 06.14 +37 24 11.9          20.3 V ES129G96
     K09SH1P  C2009 09 29.19425 23 32 05.42 +37 24 02.9          20.9 V ES129G96
     K09SH1P  C2009 09 29.20068 23 32 04.74 +37 23 53.9          20.4 V ES129G96
     K09SH1P  C2009 09 29.28756 23 31 55.02 +37 21 52.8          21.0 R ES129926
     K09SH1P  C2009 09 29.29167 23 31 54.56 +37 21 47.5          20.8 R ES129926
     K09SH1P  C2009 09 29.29576 23 31 54.15 +37 21 41.8          20.9 R ES129926

Observer details:
926 Tenagra II Observatory.  Observers P. R. Holvorcem, M. Schwartz.  Measurer
    P. R. Holvorcem.  0.81-m f/7 Ritchey-Chretien + 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.  Observers W. H. Ryan, E. V. Ryan.
    Measurer W. H. Ryan.  2.4-m f/8.9 reflector + CCD.
H36 Sandlot Observatory, Scranton.  Observer G. Hug.  0.56-m reflector + CCD.

Orbital elements:
2009 SP171                                          PHA, Earth MOID = 0.0292 AU
Epoch 2009 June 18.0 TT = JDT 2455000.5                 MPC
M 161.86402              (2000.0)            P               Q
n   0.65717494     Peri.  291.59692     -0.86792225     -0.40145891
a   1.3102336      Node   226.15299     +0.44661849     -0.88844165
e   0.3278033      Incl.   23.92522     -0.21735431     -0.22249086
P   1.50           H   19.1           G   0.15           U   9
Residuals in seconds of arc
090928 G96  0.3-  0.4-    090928 G96  0.1-  0.0     090929 G96  0.2+  0.0
090928 G96  0.6-  0.1+    090928 H36  0.7-  0.8+    090929 G96  0.4-  0.2-
090928 G96  1.1+  0.1-    090928 H01  0.2-  0.2+    090929 G96  0.2-  0.1-
090928 G96  0.0   0.3-    090928 H01  0.2-  0.2+    090929 G96  0.2+  0.2-
090928 G96  0.2+  0.3+    090928 H36  0.3+  0.2+    090929 926  0.1-  0.2-
090928 G96  0.0   0.1+    090928 H01  0.1-  0.2+    090929 926  0.1-  0.3+
090928 G96  0.0   0.1-    090928 H36  0.6+  1.0-    090929 926  0.4+  0.4+

Ephemeris:
2009 SP171               a,e,i = 1.31, 0.33, 24                  q = 0.8807
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2009 09 26    23 37.83   +38 33.6    0.747    1.656   141.8    22.0    20.6
2009 10 01    23 28.92   +36 40.4    0.726    1.644   143.7    21.1    20.5
2009 10 06    23 20.62   +34 24.4    0.710    1.631   144.5    20.9    20.4
2009 10 11    23 13.28   +31 48.7    0.700    1.618   144.0    21.3    20.4
2009 10 16    23 07.19   +28 57.9    0.695    1.603   142.2    22.4    20.4
2009 10 21    23 02.54   +25 57.6    0.695    1.588   139.3    24.1    20.4
2009 10 26    22 59.43   +22 53.8    0.700    1.572   135.5    26.3    20.5
2009 10 31    22 57.86   +19 52.1    0.710    1.556   131.3    28.7    20.6
2009 11 05    22 57.78   +16 56.9    0.724    1.538   126.7    31.1    20.7
2009 11 10    22 59.09   +14 11.6    0.742    1.520   122.0    33.5    20.8
2009 11 15    23 01.69   +11 38.8    0.762    1.501   117.4    35.8    20.9
2009 11 20    23 05.47   +09 19.7    0.786    1.481   112.8    38.0    21.0
2009 11 25    23 10.33   +07 14.9    0.810    1.461   108.4    39.9    21.0
2009 11 30    23 16.15   +05 24.4    0.836    1.440   104.1    41.6    21.1
2009 12 05    23 22.82   +03 47.4    0.863    1.418   100.0    43.2    21.2

Timothy B. Spahr             (C) Copyright 2009 MPC           M.P.E.C. 2009-S129

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