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IAU Minor Planet Center

Minor Planet Center

MPEC 2007-T21 : 2007 TH1

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M.P.E.C. 2007-T21                                Issued 2007 Oct. 5, 21:59 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

                                   2007 TH1

Observations:
     K07T01H*tC2007 10 05.31927 04 27 37.82 +28 15 01.2          18.6 V ET021291
     K07T01H tC2007 10 05.32360 04 27 32.08 +28 16 01.7          18.7 V ET021291
     K07T01H tC2007 10 05.32773 04 27 26.70 +28 16 57.6          18.5 V ET021291
     K07T01H  C2007 10 05.35114 04 26 56.31 +28 22 15.5          17.9 R ET021651
     K07T01H  C2007 10 05.35177 04 26 55.47 +28 22 23.7          17.8 R ET021651
     K07T01H  C2007 10 05.35303 04 26 53.81 +28 22 41.0          17.9 R ET021651
     K07T01H tC2007 10 05.35530 04 26 50.99 +28 23 10.3          18.4 V ET021291
     K07T01H tC2007 10 05.36379 04 26 39.98 +28 25 04.9          18.5 V ET021291
     K07T01H tC2007 10 05.36791 04 26 34.48 +28 26 00.2          19.2 V ET021291
     K07T01H  C2007 10 05.89372 04 15 36.80 +30 16 47.5          18.0 R ET021024
     K07T01H  C2007 10 05.89788 04 15 31.60 +30 17 39.4                 ET021024
     K07T01H  C2007 10 05.90204 04 15 26.41 +30 18 30.9                 ET021024

Observer details:
024 Heidelberg-Konigstuhl.  Observer F. Hormuth.  0.70-m reflector + CCD.
291 LPL/Spacewatch II.  Observer T. H. Bressi.  1.8-m f/2.7 reflector + CCD.
651 Grasslands Observatory, Tucson.  Observer J. E. McGaha.  0.62-m f/5.1
    Newtonian reflector + CCD.

Orbital elements:
2007 TH1                                            PHA, Earth MOID = 0.0228 AU
Epoch 2007 Oct. 27.0 TT = JDT 2454400.5                 MPC
M  39.32514              (2000.0)            P               Q
n   0.52154140     Peri.  286.71207     +0.49511147     +0.86440946
a   1.5285402      Node    14.00518     -0.59325676     +0.40995334
e   0.4797013      Incl.   21.20257     -0.63475275     +0.29109200
P   1.89           H   21.9           G   0.15           U   9
Residuals in seconds of arc
071005 291  0.7+  0.9-    071005 651  0.4-  0.3-    071005 291  1.3-  0.4-
071005 291  1.0-  0.7+    071005 651  0.7-  0.0     071005 024  0.4-  0.2-
071005 291  1.4-  0.4+    071005 291  0.1-  0.3-    071005 024  0.4-  0.1+
071005 651  0.1-  0.0     071005 291  0.5+  0.2-    071005 024  0.3-  0.0

Ephemeris:
2007 TH1                 a,e,i = 1.53, 0.48, 21                  q = 0.7953
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2007 09 27    07 12.47   -11 30.3    0.0818   0.985    75.0   100.3    20.1
2007 10 02    05 38.64   +13 03.0    0.0714   1.020   103.4    72.7    18.8
2007 10 07    03 53.15   +33 41.3    0.0874   1.056   128.7    47.6    18.5
2007 10 12    02 29.81   +42 05.2    0.120    1.094   140.5    35.4    18.9
2007 10 17    01 36.47   +44 25.3    0.161    1.132   144.5    30.8    19.5
2007 10 22    01 03.93   +44 39.2    0.205    1.169   145.0    29.2    20.1
2007 10 27    00 44.00   +44 09.6    0.252    1.208   144.1    28.9    20.6
2007 11 01    00 31.87   +43 24.6    0.302    1.245   142.4    29.1    21.1
2007 11 06    00 24.88   +42 35.0    0.353    1.283   140.2    29.6    21.5
2007 11 11    00 21.49   +41 45.7    0.407    1.320   137.8    30.2    21.9
2007 11 16    00 20.74   +40 59.4    0.463    1.357   135.2    30.9    22.2

Timothy B. Spahr             (C) Copyright 2007 MPC           M.P.E.C. 2007-T21

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