MPEC 2011-R01 : COMET C/2011 Q3 (MCNAUGHT)

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M.P.E.C. 2011-R01                                Issued 2011 Sept. 1, 00:19 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 Q3 (MCNAUGHT)

Observations:
    CK11Q030 QC2011 08 29.74083 00 16 50.17 -05 53 42.4          18.5 TrER001E12
    CK11Q030 QC2011 08 29.78058 00 16 49.29 -05 53 44.8          18.7 TrER001E12
    CK11Q030 QC2011 08 30.51331 00 16 34.88 -05 54 23.3          18.9 TrER001E12
    CK11Q030 QC2011 08 30.51721 00 16 34.78 -05 54 23.4          19.0 TrER001E12
    CK11Q030 QC2011 08 30.63078 00 16 32.21 -05 54 29.6          18.9 TrER001E12
    CK11Q030 QC2011 08 30.63344 00 16 32.12 -05 54 29.7          19.0 TrER001E12
    CK11Q030 QC2011 08 30.80357 00 16 28.23 -05 54 38.6                rER001E12
    CK11Q030 |C2011 08 31.18217 00 16 20.60 -05 54 59.8          19.9 ToER001807
    CK11Q030 |C2011 08 31.18629 00 16 20.49 -05 54 59.9          19.9 ToER001807
    CK11Q030 |C2011 08 31.19041 00 16 20.40 -05 55 00.2          19.9 ToER001807
    CK11Q030 |C2011 08 31.19308 00 16 20.34 -05 55 00.4          20.0 ToER001807
    CK11Q030 QC2011 08 31.52456 00 16 13.18 -05 55 19.0          18.8 TrER001E12
    CK11Q030 QC2011 08 31.52839 00 16 13.09 -05 55 19.0          18.8 TrER001E12
    CK11Q030 QC2011 08 31.80466 00 16 06.39 -05 55 35.0          18.9 TrER001E12

Observer details:
807 Cerro Tololo.  Observers R. Holmes, T. Linder, V. Hoette.  Measurers
    R. Holmes, T. Linder.  0.41-m f/11 Ritchey-Chretien + 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.

Orbital elements:
    C/2011 Q3 (McNaught)
T 2012 Feb. 4.80828 TT                                  MPC
q   1.6116485            (2000.0)            P               Q
                   Peri.   46.10637     +0.38181851     -0.92242894
                   Node    21.65055     +0.79672573     +0.29680654
e   1.0            Incl.    9.01139     +0.46844715     +0.24704396
From 14 observations 2011 Aug. 29-31.

Ephemeris:
    C/2011 Q3 (McNaught)
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase   m1    m2
2011 08 02    00 17 35.1 -05 57 58   2.1349  2.8653   127.2    16.4  19.7
...
2011 08 17    00 19 12.1 -05 48 11   1.8612  2.7233   140.9    13.5  19.2
...
2011 08 25    00 18 08.6 -05 50 22   1.7316  2.6482   148.7    11.4  18.9
...
2011 08 31    00 16 24.4 -05 54 52   1.6430  2.5923   154.8     9.6  18.7
2011 09 01    00 16 02.3 -05 55 49   1.6290  2.5830   155.8     9.2  18.7
2011 09 02    00 15 38.8 -05 56 48   1.6153  2.5737   156.8     8.9  18.6
...
2011 09 08    00 12 51.1 -06 03 29   1.5376  2.5183   162.9     6.7  18.4
...
2011 09 16    00 08 00.7 -06 13 12   1.4475  2.4451   170.7     3.8  18.2
...
2011 10 01    23 56 29.0 -06 25 06   1.3220  2.3109   168.0     5.2  17.7

                       (Last issue was M.P.E.C. 2011-Q57)

Gareth V. Williams           (C) Copyright 2011 MPC           M.P.E.C. 2011-R01

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