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MPEC 2011-Q12 : COMET C/2011 Q1 (PANSTARRS)

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M.P.E.C. 2011-Q12                                Issued 2011 Aug. 22, 16:28 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.net/    ISSN 1523-6714

                          COMET C/2011 Q1 (PANSTARRS)

Observations:
    CK11Q010  C2011 08 20.44054 20 48 02.415+30 21 49.26         20.6 TLEQ012F51
    CK11Q010  C2011 08 20.45169 20 48 02.029+30 21 43.28         20.5 TLEQ012F51
    CK11Q010  C2011 08 20.46397 20 48 01.611+30 21 36.45         20.8 TLEQ012F51
    CK11Q010  C2011 08 20.47382 20 48 01.266+30 21 31.23         20.5 TLEQ012F51
    CK11Q010  C2011 08 21.71816 20 47 18.99 +30 10 18.6          20.4 TcEQ012D35
    CK11Q010  C2011 08 21.72071 20 47 18.89 +30 10 17.4                cEQ012D35
    CK11Q010  C2011 08 21.72321 20 47 18.82 +30 10 15.8                cEQ012D35
    CK11Q010  C2011 08 21.72573 20 47 18.72 +30 10 14.6                cEQ012D35
    CK11Q010  C2011 08 21.72821 20 47 18.63 +30 10 13.0                cEQ012D35
    CK11Q010  C2011 08 21.73069 20 47 18.55 +30 10 11.7                cEQ012D35
    CK11Q010  C2011 08 21.73384 20 47 18.44 +30 10 10.6                cEQ012D35
    CK11Q010  C2011 08 21.73669 20 47 18.43 +30 10 10.8                cEQ012D35
    CK11Q010  C2011 08 21.73947 20 47 18.26 +30 10 07.8                cEQ012D35
    CK11Q010 KC2011 08 21.98215 20 47 09.98 +30 07 52.6                tEQ012204
    CK11Q010 KC2011 08 21.99671 20 47 09.63 +30 07 46.0          18.7 TtEQ012204
    CK11Q010 KC2011 08 22.09384020 47 06.37 +30 06 51.7          19.2 TrEQ012H21
    CK11Q010 KC2011 08 22.11203120 47 05.76 +30 06 42.3          19.1 TrEQ012H21
    CK11Q010 KC2011 08 22.11974720 47 05.51 +30 06 38.3          19.3 TrEQ012H21
    CK11Q010 KC2011 08 22.12707720 47 05.25 +30 06 34.2          19.3 TrEQ012H21
    CK11Q010 %C2011 08 22.29992520 46 59.46 +30 05 00.1          19.8 ToEQ012F65
    CK11Q010 %C2011 08 22.30190120 46 59.43 +30 04 58.9          19.7 ToEQ012F65
    CK11Q010 %C2011 08 22.30388320 46 59.34 +30 04 58.2          19.8 ToEQ012F65
    CK11Q010 %C2011 08 22.30586920 46 59.29 +30 04 56.9          19.7 ToEQ012F65
    CK11Q010 %C2011 08 22.30784820 46 59.21 +30 04 55.8          19.8 ToEQ012F65

Observer details:
204 Schiaparelli Observatory.  Observer L. Buzzi.  0.60-m f/4.64 reflector
    + CCD.
D35 Lulin Observatory.  Observers S. Abe, H. Y. Hsiao.  Measurer S. Abe.
    1.0-m f/8 Cassegrain + CCD.
F51 Pan-STARRS 1, Haleakala.  Observers N. Primak, A. Schultz, S. Watters,
    J. Thiel, T. Goggia.  Measurer PS1 Science Consortium.  1.8-m
    Ritchey-Chretien + CCD.
F65 Haleakala-Faulkes Telescope North.  Observer T. Lister.  2.0-m f/10
    Ritchey-Chretien + CCD.
H21 Astronomical Research Observatory, Westfield.  Observer R. Holmes.
    Measurers S. Foglia, L. Buzzi, T. Vorobjov.  0.61-m f/4.0 astrograph + CCD.

Orbital elements:
    C/2011 Q1 (PANSTARRS)
T 2012 Oct. 25.93124 TT                                 MPC
q   3.1997345            (2000.0)            P               Q
                   Peri.  213.60045     +0.85914703     -0.45208756
                   Node   164.96830     +0.19228976     +0.71939817
e   1.0            Incl.   67.58399     -0.47422677     -0.52733586
From 24 observations 2011 Aug. 20-22.

Ephemeris:
    C/2011 Q1 (PANSTARRS)
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase   m1    m2
2011 07 23    21 04 38.5 +33 13 28   4.6288  5.2755   124.8     9.1  20.1
...
2011 08 07    20 55 58.3 +32 03 21   4.4507  5.1761   131.3     8.5  19.9
...
2011 08 15    20 51 12.2 +31 07 14   4.3750  5.1234   133.3     8.3  19.8
...
2011 08 21    20 47 43.4 +30 16 49   4.3278  5.0839   134.1     8.2  19.7
2011 08 22    20 47 09.5 +30 07 45   4.3208  5.0773   134.1     8.2  19.7
2011 08 23    20 46 36.0 +29 58 30   4.3140  5.0708   134.2     8.2  19.7
...
2011 08 29    20 43 22.8 +28 59 11   4.2783  5.0314   133.9     8.3  19.7
...
2011 09 06    20 39 33.3 +27 30 57   4.2444  4.9792   132.3     8.6  19.6
...
2011 09 21    20 34 19.9 +24 24 01   4.2227  4.8818   126.1     9.6  19.5

Gareth V. Williams           (C) Copyright 2011 MPC           M.P.E.C. 2011-Q12

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