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  • MPEC 2008-U75 : 2008 CH1

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    M.P.E.C. 2008-U75                                Issued 2008 Oct. 28, 04:53 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
    
                                       2008 CH1
    
                               Revision to MPEC 2008-C24
    
    Additional Observations:
         K08C01H 2C2008 10 21.56298304 45 59.696-19 38 40.88         21.6 R EU075568
         K08C01H 2C2008 10 21.56710104 45 59.220-19 38 44.26         21.6 R EU075568
         K08C01H 2C2008 10 22.56192904 44 09.598-19 52 10.68         22.2 R EU075568
         K08C01H 2C2008 10 22.56521104 44 09.202-19 52 13.30         22.3 R EU075568
    
    Observer details:
    568 Mauna Kea.  Observers D. J. Tholen, M. Micheli, G. T. Elliott.  Measurer
        D. J. Tholen.  2.24-m University of Hawaii reflector.
    
    First and last observations above in comparison with prediction:
    Residuals in seconds of arc, reference and Delta-T
    081021 568 18.1- 18.6+    081022 568 18.3- 18.8+    MPO136023   -0.0017 day
    
    Orbital elements:
    2008 CH1                                                 Earth MOID = 0.1149 AU
    Epoch 2008 Nov. 30.0 TT = JDT 2454800.5                 MPC
    M 125.10537              (2000.0)            P               Q
    n   0.74850649     Peri.  138.22040     +0.00532955     +0.98270353
    a   1.2013577      Node   131.20212     -0.97026236     +0.04987888
    e   0.3248191      Incl.   14.24259     -0.24199701     -0.17834200
    P   1.32           H   21.7           G   0.15           U   4
    Residuals in seconds of arc
    080202 691  0.2-  0.2-    080203 246  0.0   0.7+    080209 291  0.0   0.2-
    080202 691  0.1+  0.4-    080203 246  0.1+  0.6-    080224 291  0.0   0.6+
    080202 691  0.1-  0.4+    080203 246  0.3+  1.2-    080224 291  0.2+  0.1-
    080202 B21  1.1+  0.2+    080206 291  0.2+  0.1+    080226 291  0.5-  0.5+
    080202 B21  0.4-  0.2-    080206 291  0.0   0.2-    080226 291  0.0   0.0
    080202 B21  1.4+  1.0+    080206 291  0.1-  0.3-    080226 291  0.3+  0.2-
    080203 H55  0.4+  0.5+    080207 291  0.1-  0.5+    080228 291  0.2-  0.1-
    080203 H55  0.6+  0.1-    080207 291  0.5-  0.3+    080228 291  0.2+  0.3-
    080203 H55  1.0+  0.1+    080207 291  0.6-  0.7-    081021 568  0.0   0.1-
    080203 291  0.0   0.4-    080208 291  0.2-  0.4+    081021 568  0.0   0.0
    080203 291  0.1+  0.5+    080208 291  0.2-  0.0     081022 568  0.1+  0.1+
    080203 246  0.3+  1.0+    080208 291  0.2-  0.3+    081022 568  0.0   0.0
    080203 246  0.4+  0.5-    080209 291  0.3+  0.5-
    080203 246  0.1+  0.8+    080209 291  0.2+  0.5-
    
    Ephemeris:
    2008 CH1                 a,e,i = 1.20, 0.32, 14                  q = 0.8111
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2008 10 21    04 47.00   -19 30.6    0.501    1.350   125.6    36.8    22.3
    2008 10 31    04 26.38   -21 18.7    0.507    1.390   133.2    31.4    22.3
    2008 11 10    04 01.98   -21 44.2    0.526    1.427   138.4    27.4    22.3
    2008 11 20    03 37.82   -20 39.1    0.560    1.460   139.6    26.0    22.4
    2008 11 30    03 17.54   -18 16.9    0.609    1.490   136.8    27.0    22.7
    2008 12 10    03 03.30   -15 03.9    0.673    1.516   131.2    29.3    23.0
    
    Gareth V. Williams           (C) Copyright 2008 MPC           M.P.E.C. 2008-U75
    

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