• MPC Preparation (Info)

    • MPEC 2011-A46 : COMET P/2011 A1 (LARSON)

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    M.P.E.C. 2011-A46                                Issued 2011 Jan. 12, 00:45 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.org/iau/mpc.html  ISSN 1523-6714

                           COMET P/2011 A1 (LARSON)

Observations:
    PK11A010  C2010 12 11.47013 10 41 56.61 +23 07 26.1          19.7 TrEA046703
    PK11A010  C2010 12 11.47770 10 41 57.26 +23 07 25.6          19.9 TrEA046703
    PK11A010  C2010 12 11.48531 10 41 57.76 +23 07 27.6          19.4 TrEA046703
    PK11A010  C2010 12 11.49299 10 41 58.23 +23 07 29.3          19.3 TrEA046703
    PK11A010  C2011 01 10.43706 11 05 47.40 +25 43 02.8          19.0 TrEA046703
    PK11A010  C2011 01 10.44336 11 05 47.61 +25 43 05.3          19.1 TrEA046703
    PK11A010  C2011 01 10.44969 11 05 47.72 +25 43 08.1          19.0 TrEA046703
    PK11A010  C2011 01 10.45603 11 05 47.86 +25 43 10.8          19.1 TrEA046703
    PK11A010  C2011 01 11.39368 11 06 06.98 +25 50 24.9          19.3 TrEA046G96
    PK11A010  C2011 01 11.40074 11 06 07.12 +25 50 28.0          18.3 TrEA046G96
    PK11A010  C2011 01 11.41481 11 06 07.41 +25 50 34.7          18.7 TrEA046G96
    PK11A010  C2011 01 11.45225 11 06 08.11 +25 50 52.0          18.9 ToEA046H01
    PK11A010  C2011 01 11.46013 11 06 08.25 +25 50 55.6          18.9 ToEA046H01
    PK11A010  C2011 01 11.46971 11 06 08.41 +25 51 00.1          18.9 ToEA046H01
    PK11A010  C2011 01 11.47996 11 06 08.59 +25 51 04.9          18.9 ToEA046H01

Observer details:
703 Catalina Sky Survey.  Observer S. M. Larson.  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.  0.68-m Schmidt
    + CCD.
G96 Mt. Lemmon Survey.  Observer R. A. Kowalski.  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.
H01 Magdalena Ridge Observatory, Socorro.  Observer W. H. Ryan.  2.4-m f/8.9
    reflector + CCD.

Orbital elements:
    P/2011 A1 (Larson)
T 2010 Nov. 15.43246 TT                                 MPC
q   2.2208562            (2000.0)            P               Q
n   0.13516894     Peri.   45.17571     -0.46852651     -0.85521142
a   3.7602620      Node    73.96069     +0.73149685     -0.51617571
e   0.4093879      Incl.   13.32956     +0.49537387     -0.04664825
P   7.29
From 15 observations 2010 Dec. 11-2011 Jan. 11.

Ephemeris:
    P/2011 A1 (Larson)
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase   m1    m2
2010 12 13    10 43 43.4 +23 11 37   1.7390  2.2301   106.6    25.0  19.2
...
2010 12 28    10 58 11.2 +24 14 06   1.6017  2.2429   118.4    22.7  19.0
...
2011 01 05    11 03 23.0 +25 03 34   1.5379  2.2519   125.1    20.9  19.0
...
2011 01 11    11 05 59.1 +25 47 22   1.4957  2.2595   130.3    19.4  18.9
2011 01 12    11 06 18.4 +25 55 09   1.4892  2.2609   131.1    19.1  18.9
2011 01 13    11 06 35.7 +26 03 04   1.4828  2.2623   132.0    18.8  18.9
...
2011 01 19    11 07 38.5 +26 52 44   1.4481  2.2710   137.3    17.1  18.9
...
2011 01 27    11 07 12.2 +28 02 47   1.4119  2.2839   144.1    14.6  18.8
...
2011 02 11    11 01 10.6 +30 09 20   1.3799  2.3116   154.8    10.5  18.8

Gareth V. Williams           (C) Copyright 2011 MPC           M.P.E.C. 2011-A46

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