MPEC 2007-H21 : 2007 HY3

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M.P.E.C. 2007-H21                                Issued 2007 Apr. 19, 11:15 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 HY3

Observations:
     K07H03Y* C2007 04 18.45333 15 43 28.34 -18 18 38.6          20.6 V EH021G96
     K07H03Y  C2007 04 18.45829 15 43 29.60 -18 19 45.9          20.8 V EH021G96
     K07H03Y  C2007 04 18.46319 15 43 30.86 -18 20 52.3          20.1 V EH021G96
     K07H03Y  C2007 04 18.46811 15 43 32.12 -18 21 59.6          20.4 V EH021G96
     K07H03Y  C2007 04 18.47637 15 43 34.06 -18 23 52.6          19.7 V EH021G96
     K07H03Y  C2007 04 18.47701 15 43 34.32 -18 24 02.5          20.8 V EH021G96
     K07H03Y  C2007 04 18.47766 15 43 34.50 -18 24 09.4          20.2 V EH021G96
     K07H03Y  C2007 04 18.48755 15 43 36.99 -18 26 24.5                 EH021G96
     K07H03Y  C2007 04 18.48951 15 43 37.48 -18 26 52.0          20.8 V EH021G96
     K07H03Y  C2007 04 19.34110 15 48 15.22 -21 44 14.6          20.1 V EH021G96
     K07H03Y  C2007 04 19.34164 15 48 15.30 -21 44 22.8                 EH021G96
     K07H03Y  C2007 04 19.34218 15 48 15.51 -21 44 29.5          20.1 V EH021G96
     K07H03Y  C2007 04 19.34271 15 48 15.62 -21 44 36.6          20.8 V EH021G96
     K07H03Y  C2007 04 19.40904 15 48 32.72 -22 00 06.8          20.1 V EH021G96
     K07H03Y  C2007 04 19.40992 15 48 32.95 -22 00 21.2          20.5 V EH021G96
     K07H03Y  C2007 04 19.41081 15 48 33.19 -22 00 32.8          20.8 V EH021G96
     K07H03Y  C2007 04 19.41170 15 48 33.37 -22 00 43.0          21.2 V EH021G96

Observer details:
G96 Mt. Lemmon Survey.  Observer R. E. Hill.  Measurers E. C. Beshore,
    E. J. Christensen, G. J. Garradd, A. R. Gibbs, A. D. Grauer, R. E. Hill,
    R. A. Kowalski, S. M. Larson, R. H. McNaught.  1.5-m reflector + CCD.

Orbital elements:
2007 HY3                                                 Earth MOID = 0.0423 AU
Epoch 2007 Apr. 10.0 TT = JDT 2454200.5                 MPC
M 348.74053              (2000.0)            P               Q
n   0.60421485     Peri.  190.03188     -0.76969667     +0.63310120
a   1.3857188      Node    29.74841     -0.57365842     -0.62940571
e   0.2456790      Incl.    9.53073     -0.28014827     -0.45058996
P   1.63           H   25.6           G   0.15           U   8
Residuals in seconds of arc
070418 G96  0.5-  0.6-    070418 G96  0.4+  0.8+    070419 G96  0.0   0.6+
070418 G96  0.1-  0.1-    070418 G96  0.1+  0.5+    070419 G96  0.1+  0.6+
070418 G96  0.4+  0.4+    070418 G96  0.1-  0.3-    070419 G96  0.1+  1.5-
070418 G96  0.8+  0.3+    070419 G96  0.2+  0.1-    070419 G96  0.3+  0.7-
070418 G96  1.2-  0.0     070419 G96  0.6-  0.7-    070419 G96  0.4-  1.6+
070418 G96  0.2+  1.2-    070419 G96  0.4+  0.2+

Ephemeris:
2007 HY3                 a,e,i = 1.39, 0.25, 10                  q = 1.0453
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2007 04 20    15 51.80   -24 15.7    0.0505   1.048   148.2    30.3    20.5
2007 04 21    15 57.52   -28 09.8    0.0504   1.047   146.6    31.9    20.6
2007 04 22    16 03.58   -32 01.9    0.0506   1.047   144.7    33.7    20.6
2007 04 23    16 09.98   -35 49.2    0.0510   1.046   142.6    35.7    20.7
2007 04 24    16 16.76   -39 29.3    0.0518   1.046   140.4    37.8    20.8
2007 04 25    16 23.94   -43 00.0    0.0527   1.046   138.1    40.0    20.9
2007 04 26    16 31.54   -46 19.7    0.0539   1.045   135.9    42.1    21.0
2007 04 27    16 39.59   -49 27.2    0.0554   1.045   133.7    44.1    21.1
2007 04 28    16 48.10   -52 21.8    0.0570   1.045   131.5    46.1    21.2
2007 04 29    16 57.08   -55 03.1    0.0587   1.045   129.5    48.0    21.3
2007 04 30    17 06.56   -57 31.3    0.0606   1.045   127.7    49.7    21.5
2007 05 01    17 16.53   -59 46.5    0.0627   1.045   125.9    51.3    21.6
2007 05 02    17 26.99   -61 49.2    0.0649   1.046   124.3    52.7    21.7
2007 05 03    17 37.92   -63 39.9    0.0672   1.046   122.8    54.1    21.8
2007 05 04    17 49.29   -65 19.4    0.0696   1.046   121.5    55.3    21.9
2007 05 05    18 01.07   -66 48.3    0.0720   1.047   120.3    56.3    22.0
2007 05 06    18 13.21   -68 07.3    0.0746   1.047   119.2    57.3    22.1
2007 05 07    18 25.64   -69 17.2    0.0772   1.047   118.2    58.1    22.2
2007 05 08    18 38.29   -70 18.7    0.0798   1.048   117.3    58.9    22.3
2007 05 09    18 51.06   -71 12.5    0.0825   1.049   116.5    59.5    22.4
2007 05 10    19 03.87   -71 59.2    0.0852   1.049   115.8    60.1    22.5

Timothy B. Spahr             (C) Copyright 2007 MPC           M.P.E.C. 2007-H21

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