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Minor Planet Center

MPEC 2010-D72 : 2010 DM21

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M.P.E.C. 2010-D72                                Issued 2010 Feb. 22, 23:06 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

                                   2010 DM21

Observations:
     K10D21M* S2010 02 16.21119 04 35 33.28 -21 22 42.6                 ED072C51
     K10D21M  s2010 02 16.21119 1 + 3461.4005 + 5283.0814 - 2807.2605   ED072C51
     K10D21M  S2010 02 16.27727 04 35 57.61 -21 19 37.1                 ED072C51
     K10D21M  s2010 02 16.27727 1 + 3438.8701 + 5274.3819 - 2851.0679   ED072C51
     K10D21M  S2010 02 16.27740 04 35 57.75 -21 19 37.1                 ED072C51
     K10D21M  s2010 02 16.27740 1 + 3467.3077 + 5295.9340 - 2775.5470   ED072C51
     K10D21M  S2010 02 16.34349 04 36 22.11 -21 16 33.0                 ED072C51
     K10D21M  s2010 02 16.34349 1 + 3444.9983 + 5287.5322 - 2819.3294   ED072C51
     K10D21M  S2010 02 16.60823 04 37 59.76 -21 04 07.8                 ED072C51
     K10D21M  s2010 02 16.60823 1 + 3439.2882 + 5316.8625 - 2770.9311   ED072C51
     K10D21M  S2010 02 16.67431 04 38 24.20 -21 01 02.3                 ED072C51
     K10D21M  s2010 02 16.67431 1 + 3416.6370 + 5308.2395 - 2815.2615   ED072C51
     K10D21M  S2010 02 16.67444 04 38 24.27 -21 01 02.4                 ED072C51
     K10D21M  s2010 02 16.67444 1 + 3444.6876 + 5329.6141 - 2739.5485   ED072C51
     K10D21M  S2010 02 17.07135 04 40 50.35 -20 42 16.5                 ED072C51
     K10D21M  s2010 02 17.07135 1 + 3394.0425 + 5342.2842 - 2777.7545   ED072C51
     K10D21M QC2010 02 19.49242 04 55 35.13 -18 45 05.5                 ED072E12
     K10D21M QC2010 02 19.50220 04 55 38.58 -18 44 36.7          20.6 V ED072E12
     K10D21M  C2010 02 20.10302 04 59 17.27 -18 15 13.4          21.4 R ED072926
     K10D21M  C2010 02 20.10712 04 59 18.70 -18 15 00.4          20.9 R ED072926
     K10D21M tC2010 02 20.13817 04 59 29.79 -18 13 28.4          20.7 V ED072291
     K10D21M tC2010 02 20.14261 04 59 31.31 -18 13 16.7          20.4 V ED072291
     K10D21M tC2010 02 20.14644 04 59 32.76 -18 13 03.8          20.7 V ED072291
     K10D21M 2C2010 02 20.25129505 00 10.692-18 07 48.74         20.9 R ED072568
     K10D21M 2C2010 02 20.25307205 00 11.336-18 07 43.43         21.1 R ED072568
     K10D21M QC2010 02 20.46532 05 01 27.68 -17 56 52.8                 ED072E12
     K10D21M 2C2010 02 21.31282505 06 32.666-17 14 41.76         20.8 R ED072568
     K10D21M 2C2010 02 21.31460305 06 33.283-17 14 36.36         20.8 R ED072568

Observer details:
291 LPL/Spacewatch II.  Observer R. S. McMillan.  1.8-m f/2.7 reflector + CCD.
568 Mauna Kea.  Observers M. Micheli, G. T. Elliott, D. J. Tholen.  Measurer
    D. J. Tholen.  2.24-m University of Hawaii reflector.
926 Tenagra II Observatory.  Observers P. R. Holvorcem, M. Schwartz.  Measurer
    P. R. Holvorcem.  0.81-m f/7 Ritchey-Chretien + CCD.
E12 Siding Spring Survey.  Observer R. H. McNaught.  0.5-m Uppsala Schmidt
    + CCD.
C51 WISE.  Measurers A. Mainzer, E. Wright, J. Bauer, T. Grav, J. Dailey, J.
    Masiero, R. Cutri, R. McMillan, R. Walker.
    (http://wise.ssl.berkeley.edu/mission_sci.html)

Orbital elements:
2010 DM21                                                Earth MOID = 0.2558 AU
Epoch 2010 Jan. 4.0 TT = JDT 2455200.5                  MPC
M 359.06151              (2000.0)            P               Q
n   0.21415990     Peri.  262.76121     +0.15234143     -0.98827536
a   2.7667969      Node   178.36766     +0.98746855     +0.15177086
e   0.6444075      Incl.   20.96752     +0.04120616     +0.01665598
P   4.60           H   20.5           G   0.15           U   8
Residuals in seconds of arc
100216 C51  0.5+  0.2+    100217 C51  0.9-  0.8+    100220 291  1.4+  0.5+
100216 C51  0.5-  0.7+    100219 E12  0.9+  0.5+    100220 568  0.0   0.1+
100216 C51  0.8+  0.6+    100219 E12  0.1+  0.1+    100220 568  0.3+  0.1+
100216 C51  0.2+  0.6-    100220 926  0.4+  0.4+    100220 E12  0.6+  0.1-
100216 C51  0.4-  0.6+    100220 926  0.0   1.2+    100221 568  0.3+  0.1+
100216 C51  0.7+  0.4-    100220 291  0.9+  0.6+    100221 568  0.2+  0.2+
100216 C51  1.0+  0.6-    100220 291  0.1+  0.9-

Ephemeris:
2010 DM21                a,e,i = 2.77, 0.64, 21                  q = 0.9839
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2010 02 23    05 16.57   -15 49.1    0.467    1.163    99.7    57.0    21.2
2010 02 28    05 45.36   -11 33.4    0.483    1.198   103.4    53.5    21.3
2010 03 05    06 12.52   -07 23.7    0.506    1.236   106.6    50.3    21.4
2010 03 10    06 37.87   -03 31.1    0.538    1.275   109.1    47.4    21.5
2010 03 15    07 01.36   -00 02.8    0.578    1.315   110.7    45.0    21.6
2010 03 20    07 23.05   +02 57.7    0.625    1.356   111.5    43.1    21.8
2010 03 25    07 43.07   +05 29.8    0.678    1.398   111.7    41.5    22.0

Timothy B. Spahr             (C) Copyright 2010 MPC           M.P.E.C. 2010-D72

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