• Processing (Info)

    • MPEC 2012-H82 : 2012 HE31

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    M.P.E.C. 2012-H82                                Issued 2012 Apr. 29, 14:44 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 https://www.minorplanetcenter.net/    ISSN 1523-6714

                                   2012 HE31

Observations:
     K12H31E* C2012 04 27.19816 12 22 36.58 -15 12 49.2          19.2  cEH082704
     K12H31E  C2012 04 27.20876 12 22 19.75 -15 13 50.5          19.1  cEH082704
     K12H31E  C2012 04 27.21938 12 22 02.77 -15 14 54.3          18.7  cEH082704
     K12H31E  C2012 04 27.23032 12 21 45.27 -15 15 57.5          18.9  cEH082704
     K12H31E  C2012 04 28.17627 11 50 38.98 -17 13 37.6          18.9  cEH082704
     K12H31E  C2012 04 28.18669 11 50 08.52 -17 15 15.3          18.7  cEH082704
     K12H31E  C2012 04 28.19721 11 49 37.56 -17 16 54.5          19.2  cEH082704
     K12H31E  C2012 04 28.20761 11 49 06.66 -17 18 32.0          18.6  cEH082704
     K12H31E  C2012 04 28.21810 11 48 35.30 -17 20 08.6          18.5  cEH082704
     K12H31E KC2012 04 28.86376411 09 27.84 -19 19 32.9          17.6 VvEH082B03
     K12H31E KC2012 04 28.86417311 09 25.69 -19 19 38.1          17.6 VvEH082B03
     K12H31E KC2012 04 28.86458111 09 23.91 -19 19 43.2          18.0 VvEH082B03
     K12H31E  C2012 04 29.18922 10 39 48.75 -20 25 10.5          17.8 RcEH082854
     K12H31E  C2012 04 29.19153 10 39 33.52 -20 25 38.7          17.9 RcEH082854
     K12H31E QC2012 04 29.41252710 14 02.94 -20 52 27.7                rEH082E12
     K12H31E QC2012 04 29.47891110 04 49.59 -21 02 36.1          18.3 VrEH082E12
     K12H31E QC2012 04 29.47928010 04 46.46 -21 02 38.8          17.5 VrEH082E12
     K12H31E QC2012 04 29.47963910 04 43.39 -21 02 41.0          18.0 VrEH082E12

Observer details:
704 Lincoln Laboratory ETS, New Mexico.  Observers M. Blythe, G. Spitz,
    R. Brungard, J. Paige, P. Festler, T. McVey, A. Valdivia, C. Gall.  1.0-m
    f/2.15 reflector + CCD.
854 Sabino Canyon Observatory, Tucson.  Observer J. E. McGaha.  0.36-m f/10.0
    Schmidt-Cassegrain + CCD.
B03 Alter Satzberg, Vienna.  Observer M. Pietschnig.  0.35-m f/5.8
    Schmidt-Cassegrain + CCD.
E12 Siding Spring Survey.  Observer R. H. McNaught.  Measurers J. D. Ahern,
    E. C. Beshore, A. Boattini, A. R. Gibbs, A. D. Grauer, R. E. Hill,
    R. A. Kowalski, S. M. Larson, R. H. McNaught.  0.5-m Uppsala Schmidt + CCD.

Orbital elements:
2012 HE31                                                Earth MOID = 0.0042 AU
Epoch 2012 Mar. 14.0 TT = JDT 2456000.5                 MPC
M 300.74459              (2000.0)            P               Q
n   0.61075908     Peri.  271.17598     +0.27674019     +0.96094087
a   1.3758025      Node    14.89064     -0.87735336     +0.25382946
e   0.3909527      Incl.    0.61115     -0.39200248     +0.11028713
P   1.61           H   25.8           G   0.15           U   7
Residuals in seconds of arc
120427 704  0.2+  0.6-    120428 704  0.8+  0.1-    120429 854  2.6-  0.4-
120427 704  0.2-  0.2+    120428 704  0.6+  0.4-    120429 854  0.4-  1.3-
120427 704  0.8-  1.5-    120428 704  0.8+  0.9+    120429 E12  0.4+  0.1-
120427 704  0.0   1.0-    120428 B03  0.0   1.8+    120429 E12  0.2-  0.7-
120428 704  0.1+  0.4+    120428 B03  1.8-  1.5+    120429 E12  0.1+  0.4-
120428 704  0.2+  0.5+    120428 B03  1.5+  1.3+    120429 E12  0.1+  0.4+

Ephemeris:
2012 HE31                a,e,i = 1.38, 0.39, 1                   q = 0.8379
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2012 03 30    13 33 43.9 -09 36 12   0.2049  1.1973   164.3    13.0    23.5
...
2012 04 14    13 27 19.0 -10 20 03   0.1011  1.1040   178.9     1.0    21.2
...
2012 04 22    13 11 39.1 -11 32 00   0.05105 1.0553   168.2    11.2    20.2
...
2012 04 28    11 58 02.9 -16 40 07   0.01577 1.0198   145.2    34.3    18.3
2012 04 29    10 58 21.6 -19 35 04   0.01070 1.0140   130.3    49.3    17.8
2012 04 30    08 38 26.1 -21 19 59   0.0072731.0083    97.3    82.3    18.0
...
2012 05 06    02 23 10.6 +05 05 14   0.03491 0.9749    13.6   165.9    32.2
...
2012 05 14    01 59 13.2 +07 42 54   0.08410 0.9341    23.3   154.6    29.7
...
2012 05 29    01 58 37.9 +09 40 10   0.1840  0.8735    36.9   135.8    28.2

A. U. Tomatic                (C) Copyright 2012 MPC           M.P.E.C. 2012-H82

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