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    • MPEC 2011-H46 : 2011 HS4

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    M.P.E.C. 2011-H46                                Issued 2011 Apr. 28, 01:29 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

                                   2011 HS4

Observations:
     K11H04S* C2011 04 26.43641 17 00 31.03 -02 47 15.5          19.4 VrEH046G96
     K11H04S  C2011 04 26.44339 17 00 28.58 -02 47 10.2          19.9 VrEH046G96
     K11H04S  C2011 04 26.45039 17 00 26.13 -02 47 05.2          19.9 VrEH046G96
     K11H04S  C2011 04 26.45737 17 00 23.68 -02 47 00.0          20.0 VrEH046G96
     K11H04S  C2011 04 26.48932 17 00 12.43 -02 46 36.2          20.2 VrEH046G96
     K11H04S  C2011 04 26.48971 17 00 12.33 -02 46 36.7          20.8 VrEH046G96
     K11H04S  C2011 04 26.49048 17 00 12.10 -02 46 35.4          19.2 VrEH046G96
     K11H04S KC2011 04 27.35392 16 55 16.40 -02 36 22.0          20.1 RuEH046H36
     K11H04S KC2011 04 27.35797 16 55 14.98 -02 36 18.9          20.1 RuEH046H36
     K11H04S KC2011 04 27.36226 16 55 13.50 -02 36 15.7          20.4 RuEH046H36
     K11H04S KC2011 04 27.36625 16 55 12.08 -02 36 12.0          20.4 RuEH046H36
     K11H04S  C2011 04 27.39444 16 55 02.53 -02 35 50.9          20.1 VrEH046G96
     K11H04S  C2011 04 27.40009 16 55 00.55 -02 35 46.8          19.7 VrEH046G96
     K11H04S  C2011 04 27.40577 16 54 58.50 -02 35 42.8          19.8 VrEH046G96
     K11H04S  C2011 04 27.41141 16 54 56.52 -02 35 38.9          20.1 VrEH046G96
     K11H04S  C2011 04 27.44990 16 54 42.95 -02 35 10.3          20.8  cEH046926
     K11H04S  C2011 04 27.45268 16 54 41.97 -02 35 08.6          20.8  cEH046926
     K11H04S  C2011 04 27.61685 16 53 45.91 -02 32 43.1          19.8 RoEH046474
     K11H04S  C2011 04 27.61826 16 53 45.28 -02 32 40.6          19.8 RoEH046474
     K11H04S  C2011 04 27.61958 16 53 44.79 -02 32 40.7          20.2 RoEH046474
     K11H04S  C2011 04 27.62090 16 53 44.37 -02 32 39.6          19.7 RoEH046474
     K11H04S  C2011 04 27.62223 16 53 43.98 -02 32 38.9          19.8 RoEH046474

Observer details:
474 Mount John Observatory, Lake Tekapo.  Observers A. C. Gilmore,
    P. M. Kilmartin.  Measurer P. M. Kilmartin.  1.0-m f/7.7 reflector + CCD.
926 Tenagra II Observatory.  Observers S. Abe, J. K. Guo, W. P. Chen.
    Measurer S. Abe.  0.81-m f/7 Ritchey-Chretien + CCD.
G96 Mt. Lemmon Survey.  Observers A. R. Gibbs, R. E. Hill.  Measurers
    J. D. Ahern, E. C. Beshore, A. Boattini, 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.
H36 Sandlot Observatory, Scranton.  Observer G. Hug.  0.56-m reflector + CCD.

Orbital elements:
2011 HS4                                            PHA, Earth MOID = 0.0076 AU
Epoch 2011 Feb. 8.0 TT = JDT 2455600.5                  MPC
M   4.72034              (2000.0)            P               Q
n   1.06899629     Peri.  312.98913     +0.30272318     -0.94946317
a   0.9472950      Node   119.21588     +0.89975280     +0.25600210
e   0.6847883      Incl.    5.45272     +0.31433036     +0.18161117
P   0.92           H   20.6           G   0.15           U   9
Residuals in seconds of arc
110426 G96  0.1-  0.4-    110427 H36  0.5-  0.3-    110427 926  0.5+  0.4+
110426 G96  0.0   0.2-    110427 H36  0.0   0.2-    110427 474  1.2+  0.6-
110426 G96  0.1+  0.2-    110427 H36  0.2-  0.7+    110427 474  0.8-  0.9+
110426 G96  0.1+  0.1-    110427 G96  0.2+  0.3-    110427 474  1.1-  0.1-
110426 G96  0.6-  0.6+    110427 G96  0.5+  0.2-    110427 474  0.4-  0.1+
110426 G96  0.0   0.2-    110427 G96  0.2-  0.2-    110427 474  0.7+  0.2-
110426 G96  0.6+  0.6+    110427 G96  0.0   0.3-
110427 H36  0.6-  0.6-    110427 926  0.5+  0.7+

Ephemeris:
2011 HS4                 a,e,i = 0.95, 0.68, 5                   q = 0.2986
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2011 03 29    19 05 41.0 -08 19 03   0.3945  1.0164    81.3    76.1    21.3
...
2011 04 13    18 09 49.5 -05 35 23   0.3581  1.1692   109.0    54.2    20.7
...
2011 04 21    17 30 35.8 -03 54 46   0.3464  1.2391   125.7    41.2    20.4
...
2011 04 27    16 57 18.2 -02 40 17   0.3462  1.2866   138.6    31.1    20.2
2011 04 28    16 51 33.8 -02 28 32   0.3471  1.2942   140.7    29.5    20.1
2011 04 29    16 45 47.8 -02 17 04   0.3483  1.3016   142.8    27.9    20.1
...
2011 05 05    16 11 23.0 -01 16 33   0.3621  1.3440   154.3    19.0    20.0
...
2011 05 13    15 29 25.7 -00 25 11   0.3986  1.3947   162.0    13.0    20.1
...
2011 05 28    14 34 00.2 -00 21 57   0.5155  1.4734   147.2    21.9    21.1

Timothy B. Spahr             (C) Copyright 2011 MPC           M.P.E.C. 2011-H46

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