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Minor Planet Center

MPEC 2009-X43 : 2009 XB2

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M.P.E.C. 2009-X43                                Issued 2009 Dec. 12, 14:18 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 XB2

Observations:
     K09X02B* C2009 12 11.39678 08 46 39.64 +11 12 16.0          19.7 V EX043703
     K09X02B  C2009 12 11.40222 08 46 39.75 +11 12 27.0          20.1 V EX043703
     K09X02B  C2009 12 11.40773 08 46 39.86 +11 12 40.2          20.4 V EX043703
     K09X02B  C2009 12 11.41316 08 46 39.86 +11 12 51.6          19.6 V EX043703
     K09X02B  C2009 12 12.27842 08 46 58.65 +11 44 26.4          19.7 R EX043932
     K09X02B  C2009 12 12.28776 08 46 58.77 +11 44 47.1          19.6 R EX043932
     K09X02B  C2009 12 12.29542 08 46 58.86 +11 45 04.6          19.6 R EX043932
     K09X02B  C2009 12 12.48065 08 47 01.65 +11 51 58.3          20.1 R EX043926
     K09X02B  C2009 12 12.48441 08 47 01.64 +11 52 06.7          20.1 R EX043926
     K09X02B  C2009 12 12.48817 08 47 01.67 +11 52 14.9          20.2 R EX043926

Observer details:
703 Catalina Sky Survey.  Observer E. Beshore.  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.  0.68-m Schmidt + CCD.
926 Tenagra II Observatory.  Observers P. R. Holvorcem, M. Schwartz.  Measurer
    P. R. Holvorcem.  0.81-m f/7 Ritchey-Chretien + CCD.
932 John J. McCarthy Obs., New Milford.  Observer S. Riley.  0.4-m f/6.5
    Schmidt-Cassegrain + CCD.

Orbital elements:
2009 XB2                                                 Earth MOID = 0.1825 AU
Epoch 2009 Nov. 25.0 TT = JDT 2455160.5                 MPC
M  18.67143              (2000.0)            P               Q
n   0.47838691     Peri.  300.47171     +0.75029360     -0.62888683
a   1.6191355      Node    99.29637     +0.65496337     +0.66516417
e   0.3228362      Incl.   11.92189     +0.08990265     +0.40256426
P   2.06           H   20.7           G   0.15
From 10 observations 2009 Dec. 11-12.

Ephemeris:
2009 XB2                 a,e,i = 1.62, 0.32, 12                  q = 1.0964
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2009 12 05    08 42.68   +07 31.1    0.321    1.184   121.2    45.4    20.3
2009 12 15    08 47.58   +13 26.5    0.316    1.220   132.2    36.7    20.1
2009 12 25    08 45.04   +20 01.8    0.320    1.259   144.8    26.8    19.9
2010 01 04    08 35.72   +26 32.5    0.337    1.301   157.5    16.8    19.8
2010 01 14    08 21.91   +32 03.3    0.369    1.345   166.1    10.1    19.8
2010 01 24    08 07.59   +35 56.7    0.419    1.390   163.0    12.0    20.2
2010 02 03    07 56.71   +38 10.4    0.484    1.436   153.7    17.7    20.8
2010 02 13    07 51.30   +39 05.3    0.564    1.482   144.1    23.0    21.4
2010 02 23    07 51.72   +39 05.4    0.657    1.528   135.3    27.1    21.9

Timothy B. Spahr             (C) Copyright 2009 MPC           M.P.E.C. 2009-X43

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