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IAU Minor Planet Center

Minor Planet Center

MPEC 2007-J53 : 2007 JB21

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M.P.E.C. 2007-J53                                Issued 2007 May 13, 00:01 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 JB21

Observations:
     K07J21B* C2007 05 12.31607 16 58 28.45 +41 58 07.6          19.3   EJ053704
     K07J21B  C2007 05 12.32555 16 58 15.14 +42 00 02.0          19.2   EJ053704
     K07J21B  C2007 05 12.33482 16 58 02.13 +42 01 52.0          19.0   EJ053704
     K07J21B  C2007 05 12.34418 16 57 49.08 +42 03 41.5          19.3   EJ053704
     K07J21B  C2007 05 12.35355 16 57 36.06 +42 05 29.0          19.3   EJ053704
     K07J21B  C2007 05 12.94149 16 48 17.75 +43 35 12.7                 EJ053J95
     K07J21B  C2007 05 12.94288 16 48 16.36 +43 35 24.8                 EJ053J95
     K07J21B  C2007 05 12.94426 16 48 14.96 +43 35 37.6          18.6 R EJ053J95
     K07J21B  C2007 05 12.94907 16 48 06.41 +43 36 55.0          18.9 V EJ053A74
     K07J21B  C2007 05 12.95070 16 48 04.72 +43 37 09.8          18.2 V EJ053A74
     K07J21B  C2007 05 12.95262 16 48 02.71 +43 37 26.5          18.6 V EJ053A74
     K07J21B  C2007 05 12.95441 16 48 00.90 +43 37 42.2          18.4 V EJ053A74

Observer details:
704 Lincoln Laboratory ETS, New Mexico.  Observers M. Bezpalko, D. Torres,
    R. Kracke, G. Spitz, J. Kistler.  Measurers J. Stuart, S. Scruggs.  1.0-m
    f/2.15 reflector + CCD.
A74 Bergen-Enkheim Observatory.  Observer U. Suessenberger.  0.36-m f/4.6
    Schmidt-Cassegrain + CCD.
J95 Great Shefford.  Observer P. Birtwhistle.  0.40-m f/6.0 Schmidt-Cassegrain
    + CCD.

Orbital elements:
2007 JB21                                                Earth MOID = 0.0009 AU
Epoch 2007 Apr. 10.0 TT = JDT 2454200.5                 MPC
M  62.77768              (2000.0)            P               Q
n   0.99099306     Peri.  256.32712     -0.54619279     -0.82005325
a   0.9963738      Node   228.10976     +0.82950583     -0.50112093
e   0.1075919      Incl.   13.26715     +0.11659122     -0.27638828
P   0.99           H   25.1           G   0.15           U   7
Residuals in seconds of arc
070512 704  0.5+  0.3+    070512 704  0.1+  0.4-    070512 A74  0.4+  0.0
070512 704  0.1+  0.2+    070512 J95  0.1-  0.2+    070512 A74  0.3+  0.4+
070512 704  0.4-  0.1-    070512 J95  0.0   0.3-    070512 A74  0.0   0.3+
070512 704  0.3-  0.1-    070512 J95  0.2-  0.0     070512 A74  0.4+  0.3+

Ephemeris:
2007 JB21                a,e,i = 1.00, 0.11, 13                  q = 0.8892
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2007 05 10    18 24.29   +20 47.9    0.00600  1.012   118.1    61.6    16.2
2007 05 11    17 32.96   +35 02.7    0.00949  1.014   117.2    62.3    17.2
2007 05 12    17 04.64   +40 49.7    0.0134   1.016   115.8    63.5    18.0
2007 05 13    16 47.13   +43 45.0    0.0174   1.018   114.7    64.4    18.6
2007 05 14    16 35.33   +45 27.7    0.0216   1.019   113.9    65.0    19.1
2007 05 15    16 26.87   +46 33.7    0.0257   1.021   113.3    65.4    19.5
2007 05 16    16 20.50   +47 18.8    0.0298   1.023   112.8    65.7    19.8
2007 05 17    16 15.54   +47 50.9    0.0340   1.025   112.3    65.9    20.1
2007 05 18    16 11.57   +48 14.3    0.0381   1.026   111.9    66.1    20.4
2007 05 19    16 08.33   +48 31.8    0.0423   1.028   111.6    66.2    20.6
2007 05 20    16 05.64   +48 44.7    0.0465   1.030   111.3    66.3    20.8
2007 05 21    16 03.37   +48 54.4    0.0506   1.031   111.0    66.4    21.0
2007 05 22    16 01.43   +49 01.5    0.0547   1.033   110.7    66.5    21.2
2007 05 23    15 59.76   +49 06.5    0.0589   1.034   110.4    66.5    21.4
2007 05 24    15 58.32   +49 09.8    0.0630   1.036   110.2    66.5    21.5
2007 05 25    15 57.06   +49 11.7    0.0671   1.038   110.0    66.6    21.7
2007 05 26    15 55.96   +49 12.5    0.0712   1.039   109.7    66.6    21.8
2007 05 27    15 54.98   +49 12.3    0.0753   1.041   109.5    66.6    21.9
2007 05 28    15 54.12   +49 11.2    0.0794   1.042   109.3    66.6    22.0
2007 05 29    15 53.36   +49 09.3    0.0835   1.044   109.1    66.6    22.1
2007 05 30    15 52.69   +49 06.7    0.0875   1.045   108.8    66.6    22.3

Timothy B. Spahr             (C) Copyright 2007 MPC           M.P.E.C. 2007-J53

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