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IAU Minor Planet Center

Minor Planet Center

MPEC 2009-D28 : 2009 DA1

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M.P.E.C. 2009-D28                                Issued 2009 Feb. 19, 23:38 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 DA1

Observations:
     K09D01A* C2009 02 19.06293 10 45 50.47 +05 09 37.5          19.3 V ED028J75
     K09D01A  C2009 02 19.07652 10 45 48.89 +05 10 15.6          19.7 V ED028J75
     K09D01A  C2009 02 19.08978 10 45 47.23 +05 10 52.2          19.6 V ED028J75
     K09D01A  C2009 02 19.87846 10 44 28.57 +05 46 24.1          20.0 V ED028J75
     K09D01A  C2009 02 19.88369 10 44 27.91 +05 46 38.6          19.9 V ED028J75
     K09D01A  C2009 02 19.88469 10 44 27.86 +05 46 41.4          19.8 C ED028493
     K09D01A  C2009 02 19.88576 10 44 27.74 +05 46 44.0          19.8 C ED028493
     K09D01A  C2009 02 19.88682 10 44 27.62 +05 46 46.9          19.8 C ED028493
     K09D01A  C2009 02 19.88897 10 44 27.38 +05 46 52.3          19.8 V ED028J75
     K09D01A  C2009 02 19.89433 10 44 26.82 +05 47 06.9          19.6 V ED028J75
     K09D01A  C2009 02 19.89917 10 44 26.30 +05 47 19.2          19.8 V ED028J75
     K09D01A  C2009 02 19.91511 10 44 24.46 +05 48 00.2          19.9 V ED028941
     K09D01A  C2009 02 19.91630 10 44 24.33 +05 48 03.0          19.9 V ED028941
     K09D01A  C2009 02 19.91709 10 44 24.25 +05 48 05.0          20.0 V ED028941
     K09D01A  C2009 02 19.91908 10 44 24.03 +05 48 09.9          20.1 V ED028941
     K09D01A  C2009 02 19.93524 10 44 22.33 +05 48 53.9          19.8 C ED028493
     K09D01A  C2009 02 19.93666 10 44 22.17 +05 48 57.7          19.8 C ED028493
     K09D01A  C2009 02 19.93807 10 44 22.00 +05 49 01.4          19.6 C ED028493

Observer details:
493 Calar Alto.  Observer F. Hormuth.  1.23-m reflector + CCD.
941 Observatorio Pla D'Arguines.  Observer R. Ferrando.  0.40-m f/10
    Ritchey-Chretien + CCD.
J75 OAM Observatory, La Sagra.  Observers S. Sanchez, J. Nomen, R. Stoss,
    W. K. Y. Yeung, J. Rodriguez, A. Cikota, S. Cikota.  0.40-m f/10 reflector
    + CCD, 0.45-m f/2.8 reflector + CCD.

Orbital elements:
2009 DA1                                                 Earth MOID = 0.0399 AU
Epoch 2009 Feb. 18.0 TT = JDT 2454880.5                 MPC
M  14.45779              (2000.0)            P               Q
n   0.24590055     Peri.  272.67953     +0.35459990     -0.93412832
a   2.5232661      Node   156.42389     +0.89327213     +0.32555830
e   0.6985115      Incl.    5.85228     +0.27626765     +0.14634230
P   4.01           H   22.3           G   0.15
From 18 observations 2009 Feb. 19.  E-assumed.

Ephemeris:
2009 DA1                 a,e,i = 2.52, 0.70, 6                   q = 0.7607
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2009 02 18    10 47.81   +04 18.0    0.197    1.181   167.2    10.6    19.8
2009 02 19    10 45.96   +05 07.0    0.206    1.191   169.1     9.0    19.9
2009 02 20    10 44.24   +05 52.0    0.215    1.202   170.8     7.5    19.9
2009 02 21    10 42.65   +06 33.4    0.225    1.212   172.5     6.1    20.0
2009 02 22    10 41.17   +07 11.5    0.235    1.223   174.2     4.7    20.0
2009 02 23    10 39.79   +07 46.7    0.245    1.233   175.8     3.4    20.0
2009 02 24    10 38.51   +08 19.1    0.255    1.244   177.3     2.1    20.1
2009 02 25    10 37.31   +08 49.2    0.265    1.255   178.8     1.0    20.1
2009 02 26    10 36.20   +09 16.9    0.275    1.265   179.5     0.4    20.1
2009 02 27    10 35.17   +09 42.7    0.285    1.276   178.2     1.4    20.3
2009 02 28    10 34.21   +10 06.5    0.296    1.286   176.8     2.4    20.5
2009 03 01    10 33.32   +10 28.7    0.307    1.297   175.5     3.5    20.6
2009 03 02    10 32.50   +10 49.2    0.318    1.307   174.1     4.4    20.8
2009 03 03    10 31.74   +11 08.2    0.329    1.318   172.8     5.4    20.9
2009 03 04    10 31.04   +11 25.9    0.340    1.329   171.6     6.3    21.1
2009 03 05    10 30.40   +11 42.2    0.351    1.339   170.3     7.2    21.2
2009 03 06    10 29.82   +11 57.4    0.362    1.350   169.1     8.0    21.3
2009 03 07    10 29.29   +12 11.4    0.374    1.360   167.8     8.8    21.4
2009 03 08    10 28.81   +12 24.4    0.386    1.371   166.6     9.6    21.5
2009 03 09    10 28.38   +12 36.5    0.398    1.381   165.5    10.4    21.7
2009 03 10    10 28.00   +12 47.6    0.410    1.392   164.3    11.1    21.8

Timothy B. Spahr             (C) Copyright 2009 MPC           M.P.E.C. 2009-D28

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