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MPEC 2011-Q54 : COMET C/2011 Q2 (MCNAUGHT)

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M.P.E.C. 2011-Q54                                Issued 2011 Aug. 30, 17:51 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 Q2 (MCNAUGHT)

Observations:
    CK11Q020 QC2011 08 26.40124 13 48 16.69 -38 04 58.2          14.5 TrEQ054E12
    CK11Q020 QC2011 08 26.40829 13 48 17.46 -38 04 55.7          14.5 TrEQ054E12
    CK11Q020 QC2011 08 26.41540 13 48 18.24 -38 04 53.0          14.6 TrEQ054E12
    CK11Q020 QC2011 08 26.42247 13 48 19.02 -38 04 50.6          14.6 TrEQ054E12
    CK11Q020 QC2011 08 26.46330 13 48 23.48 -38 04 35.6                rEQ054E12
    CK11Q020 QC2011 08 26.46596 13 48 23.77 -38 04 35.0                rEQ054E12
    CK11Q020  C2011 08 27.28106 13 49 53.95 -37 59 55.8          16.7 TrEQ054E94
    CK11Q020  C2011 08 27.28582 13 49 54.47 -37 59 53.6          15.9 TrEQ054E94
    CK11Q020  C2011 08 27.28814 13 49 54.77 -37 59 52.6          15.5 TrEQ054E94
    CK11Q020  C2011 08 27.33345 13 49 59.68 -37 59 36.5          15.9 TrEQ054E94
    CK11Q020 QC2011 08 27.37606 13 50 04.48 -37 59 23.1          14.7 TrEQ054E12
    CK11Q020 QC2011 08 27.38172 13 50 05.10 -37 59 21.1          14.7 TrEQ054E12
    CK11Q020  C2011 08 27.40888 13 50 08.04 -37 59 09.2          15.8 TrEQ054E94
    CK11Q020  C2011 08 27.42156 13 50 09.47 -37 59 07.1          15.9 TuEQ054E00
    CK11Q020  C2011 08 27.43538 13 50 10.94 -37 59 01.0          15.2 TrEQ054E94
    CK11Q020  C2011 08 27.43877 13 50 11.49 -37 59 00.7          16.2 TuEQ054E00
    CK11Q020 QC2011 08 27.44497 13 50 12.09 -37 58 59.0          14.7 TrEQ054E12
    CK11Q020 QC2011 08 27.44837 13 50 12.46 -37 58 57.8          14.7 TrEQ054E12
    CK11Q020  C2011 08 27.46881 13 50 14.75 -37 58 49.4          15.9 TuEQ054E00
    CK11Q020 |C2011 08 28.02522 13 51 16.76 -37 55 41.7          17.0 ToEQ054807
    CK11Q020 |C2011 08 28.02853 13 51 17.16 -37 55 40.4          17.2 ToEQ054807
    CK11Q020 |C2011 08 28.03554 13 51 17.90 -37 55 38.2          17.0 ToEQ054807
    CK11Q020 |C2011 08 28.03719 13 51 18.12 -37 55 37.6          17.1 ToEQ054807
    CK11Q020 QC2011 08 28.38576 13 51 57.16 -37 53 40.3          14.7 TrEQ054E12
    CK11Q020 QC2011 08 28.39281 13 51 57.95 -37 53 37.8          14.6 TrEQ054E12
    CK11Q020 `C2011 08 28.39682 13 51 58.44 -37 53 36.4          15.1 TuEQ054D90
    CK11Q020 `C2011 08 28.39981 13 51 58.78 -37 53 35.1          15.1 TuEQ054D90
    CK11Q020 `C2011 08 28.40287 13 51 59.11 -37 53 34.3          15.2 TuEQ054D90
    CK11Q020 `C2011 08 28.40587 13 51 59.44 -37 53 33.3          15.2 TuEQ054D90
    CK11Q020 `C2011 08 28.40890 13 51 59.77 -37 53 31.9          15.1 TuEQ054D90
    CK11Q020  C2011 08 29.38924 13 53 50.31 -37 48 03.4          15.7 ToEQ054E16
    CK11Q020  C2011 08 29.39726 13 53 51.18 -37 48 00.4          16.0 ToEQ054E16
    CK11Q020  C2011 08 29.39810 13 53 51.24 -37 47 59.9          15.7 ToEQ054E16
    CK11Q020  C2011 08 29.39844 13 53 51.29 -37 48 00.4          15.6 TuEQ054E00
    CK11Q020  C2011 08 29.40109 13 53 51.70 -37 47 58.7          15.7 TuEQ054E00
    CK11Q020  C2011 08 29.40384 13 53 51.94 -37 47 57.9          16.0 ToEQ054E16
    CK11Q020  C2011 08 29.40782 13 53 52.44 -37 47 56.4          16.2 ToEQ054474
    CK11Q020  C2011 08 29.41094 13 53 52.74 -37 47 55.6          16.1 ToEQ054474
    CK11Q020  C2011 08 29.41395 13 53 53.10 -37 47 54.0          16.3 ToEQ054474
    CK11Q020  C2011 08 29.41409 13 53 53.14 -37 47 55.2          15.6 TuEQ054E00
    CK11Q020  C2011 08 29.41750 13 53 53.52 -37 47 52.8          15.8 TuEQ054E00
    CK11Q020 |C2011 08 29.97348 13 54 56.63 -37 44 50.1          16.9 ToEQ054807
    CK11Q020 |C2011 08 29.97549 13 54 56.84 -37 44 49.6          17.0 ToEQ054807
    CK11Q020 |C2011 08 29.98591 13 54 58.03 -37 44 46.0          17.0 ToEQ054807
    CK11Q020 |C2011 08 29.98793 13 54 58.26 -37 44 45.3          17.1 ToEQ054807
    CK11Q020  C2011 08 30.37732 13 55 42.71 -37 42 37.3          15.8 ToEQ054E16
    CK11Q020  C2011 08 30.38303 13 55 43.34 -37 42 34.9          15.9 ToEQ054E16
    CK11Q020 QC2011 08 30.38387 13 55 43.43 -37 42 34.7          14.6 TrEQ054E12
    CK11Q020  C2011 08 30.40732 13 55 46.09 -37 42 26.1          16.4 ToEQ054E16
    CK11Q020  C2011 08 30.41392 13 55 46.86 -37 42 24.0          16.4 ToEQ054E16
    CK11Q020  C2011 08 30.42670 13 55 48.32 -37 42 20.1          16.4 ToEQ054E16

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.
807 Cerro Tololo.  Observers R. Holmes, T. Linder, V. Hoette.  Measurers
    R. Holmes, T. Linder.  0.41-m f/11 Ritchey-Chretien + CCD.
D90 RAS Observatory, Moorook.  Observer K. Hills.  0.41-m f/9 Ritchey-Chretien
    + CCD.
E00 Castlemaine.  Observer M. Mattiazzo.  0.28-m f/3.3 Schmidt-Cassegrain
    + CCD.
E12 Siding Spring Survey.  Observer R. H. McNaught.  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.  0.5-m Uppsala
    Schmidt + CCD.
E16 Grove Creek Observatory, Trunkey.  Observer P. Camilleri.  0.35-m f/6
    reflector + CCD.
E94 Possum Observatory, Gisborne.  Observer J. Drummond.  0.35-m f/10
    Schmidt-Cassegrain + CCD.

Orbital elements:
    C/2011 Q2 (McNaught)
T 2012 Jan. 20.35656 TT                                 MPC
q   1.3614304            (2000.0)            P               Q
                   Peri.   34.40144     +0.67420542     +0.46388839
                   Node   287.10928     -0.73679221     +0.47603246
e   1.0            Incl.   36.96217     +0.05083590     +0.74712827
From 51 observations 2011 Aug. 26-30.

Ephemeris:
    C/2011 Q2 (McNaught)
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase   m1    m2
2011 07 31    13 06 24.5 -41 11 00   2.5922  2.7150    85.9    21.9  16.4
...
2011 08 15    13 28 33.8 -39 16 23   2.6060  2.5587    76.1    22.6  16.2
...
2011 08 23    13 42 08.9 -38 25 04   2.6117  2.4756    71.1    22.7  16.0
...
2011 08 29    13 53 06.4 -37 50 14   2.6146  2.4135    67.4    22.7  15.9
2011 08 30    13 54 59.8 -37 44 42   2.6150  2.4031    66.8    22.7  15.9
2011 08 31    13 56 54.2 -37 39 13   2.6153  2.3928    66.2    22.7  15.9
...
2011 09 06    14 08 42.7 -37 07 38   2.6161  2.3310    62.6    22.6  15.8
...
2011 09 14    14 25 24.6 -36 27 55   2.6144  2.2491    58.0    22.3  15.6
...
2011 09 29    14 59 33.5 -35 15 02   2.6018  2.0979    49.7    21.4  15.3

Gareth V. Williams           (C) Copyright 2011 MPC           M.P.E.C. 2011-Q54

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