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Minor Planet Center

MPEC 2010-E33 : 2007 HD70

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M.P.E.C. 2010-E33                                Issued 2010 Mar.  9, 14:08 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.minorplanetcenter.org/iau/mpc.html  ISSN 1523-6714

                                   2007 HD70

                           Revision to MPEC 2007-H59

Additional Observations:
     K07H70D HC2010 02 17.22049 10 52 00.23 +05 14 05.5          21.5 V EE033691
     K07H70D HC2010 02 17.23812 10 51 59.47 +05 14 17.2          21.7 V EE033691
     K07H70D KC2010 03 03.14252 10 39 02.75 +08 20 56.8                 EE033926
     K07H70D KC2010 03 03.15696 10 39 01.73 +08 21 11.3                 EE033926
     K07H70D KC2010 03 09.20105 10 32 00.23 +10 02 05.0          20.9 R EE033926
     K07H70D KC2010 03 09.21556 10 31 59.10 +10 02 20.5          21.0 R EE033926
     K07H70D KC2010 03 09.22999 10 31 58.00 +10 02 35.4          21.3 R EE033926

Observer details:
691 Steward Observatory, Kitt Peak.  Observer T. H. Bressi.  Measurer
    J. L. Montani.  0.9-m f/3 reflector + CCD.
926 Tenagra II Observatory.  Observers P. R. Holvorcem, M. Schwartz.  Measurer
    P. R. Holvorcem.  0.81-m f/7 Ritchey-Chretien + CCD.

First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
100217 691 98.5- 30.6+    100309 926 0.03- 0.01+    MPO124511   +0.024 day

Orbital elements:
2007 HD70                                                Earth MOID = 0.1461 AU
Epoch 2010 Jan. 4.0 TT = JDT 2455200.5                  MPC
M 308.23118              (2000.0)            P               Q
n   0.32030956     Peri.   82.05333     -0.44509194     +0.89493355
a   2.1155475      Node   161.41902     -0.85553549     -0.41461119
e   0.4731744      Incl.    5.65852     -0.26448476     -0.16489846
P   3.08           H   20.9           G   0.15           U   1
Residuals in seconds of arc
070425 703  0.7+  0.5-    070426 G96  0.1+  0.2-    070702 H55  0.6-  0.5+
070425 703  0.4-  0.0     070427 649  0.3+  0.5-    070702 H55  0.1+  0.3+
070425 703  0.4-  0.3-    070427 649  0.5-  0.3-    070702 H55  0.3-  0.1-
070425 703  0.4-  0.9-    070427 649  0.1+  0.1+    070712 H55  0.3+  0.3-
070425 703  0.6+  0.5+    070427 649  0.2+  1.1+    070712 H55  0.5-  0.0
070425 703  0.2-  0.2+    070429 850  0.4-  0.5-    070712 H55  0.1+  0.2+
070425 703  0.4-  0.2-    070429 850  0.0   0.3+    070712 H55  0.5+  0.4+
070425 703  0.3-  0.1-    070429 850 (0.3-  2.8+)   070723 H55  0.1+  1.0-
070425 703  0.7-  0.6-    070430 850  0.3-  0.0     070808 H55  0.6-  0.1-
070425 703  0.1+  0.4-    070430 850  0.3-  1.1-    070808 H55  1.0-  0.5-
070426 703  0.3+  0.4-    070509 649  0.1-  1.2+    070808 H55  0.8-  0.5+
070426 703  1.3-  0.3+    070509 649  0.4+  0.0     070823 H55  0.6-  0.5+
070426 703  0.1+  0.0     070509 649  0.0   1.1+    070823 H55  0.0   0.9+
070426 703  0.5-  0.6-    070518 H55  0.5+  1.1+    070823 H55  0.7+  0.8-
070426 G96  0.0   0.1-    070518 H55  0.1+  0.5+    070904 H55  0.8+  0.0
070426 G96  0.1+  0.3-    070609 649  0.0   0.1-    070904 H55  0.0   0.3+
070426 703  0.8+  0.3+    070609 649  0.8+  0.3+    070904 H55  1.0+  0.4-
070426 G96  0.1+  0.1-    070609 649  0.1-  0.2+    100217 691  0.7-  0.1+
070426 703  1.3+  0.1+    070609 649  0.4+  0.0     100217 691  0.0   0.4+
070426 G96  0.2+  0.2-    070617 H55  0.6-  0.3-    100303 926  0.9+  0.1+
070426 703  0.1-  0.3+    070617 H55  0.4+  0.1-    100303 926  0.8+  0.6+
070426 G96  0.3+  0.1+    070617 H55  0.1+  0.5+    100309 926  0.5+  0.1-
070426 G96  0.2-  0.1-    070617 H55  0.1+  0.4+    100309 926  0.3+  0.2+
070426 703  0.6+  0.0     070617 H55  0.2-  0.6-    100309 926  0.5+  0.0
070426 G96  0.0   0.3-    070617 H55  0.2+  0.3-

Ephemeris:
2007 HD70                a,e,i = 2.12, 0.47, 6                   q = 1.1145
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2010 03 05    10 36.93   +08 51.1    0.547    1.537   173.3     4.3    20.9
2010 03 15    10 25.07   +11 44.9    0.501    1.474   159.5    13.7    21.0
2010 03 25    10 14.29   +14 41.3    0.472    1.414   146.0    23.3    21.1
2010 04 04    10 07.25   +17 17.7    0.457    1.355   133.5    32.4    21.2
2010 04 14    10 05.82   +19 19.8    0.448    1.300   122.6    40.5    21.3
2010 04 24    10 11.03   +20 40.8    0.443    1.250   113.5    47.6    21.4
2010 05 04    10 22.96   +21 19.7    0.438    1.206   106.1    53.4    21.5
2010 05 14    10 41.27   +21 16.0    0.430    1.169   100.6    58.2    21.5
2010 05 24    11 05.64   +20 26.6    0.420    1.140    96.7    61.9    21.5
2010 06 03    11 35.59   +18 47.8    0.407    1.122    94.5    64.3    21.5
2010 06 13    12 10.75   +16 12.9    0.395    1.115    93.9    65.4    21.4
2010 06 23    12 50.70   +12 36.7    0.386    1.118    95.0    64.8    21.4
2010 07 03    13 34.52   +08 02.1    0.384    1.133    97.6    62.8    21.3
2010 07 13    14 20.88   +02 44.7    0.393    1.158   101.2    59.4    21.3
2010 07 23    15 08.07   -02 44.8    0.416    1.193   104.9    55.4    21.4
2010 08 02    15 54.17   -07 49.9    0.455    1.235   108.2    51.3    21.5
2010 08 12    16 37.75   -12 04.8    0.512    1.283   110.2    47.8    21.8

Timothy B. Spahr             (C) Copyright 2010 MPC           M.P.E.C. 2010-E33

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