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MPEC 2011-P03 : COMET C/2011 O1 (LINEAR)

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M.P.E.C. 2011-P03                                Issued 2011 Aug. 2, 00:38 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 O1 (LINEAR)

Observations:
    CK11O010  C2011 07 31.16245 17 18 31.78 -16 51 10.3          17.6 TcEP003704
    CK11O010  C2011 07 31.17403 17 18 31.32 -16 51 15.6          17.8 TcEP003704
    CK11O010  C2011 07 31.21012 17 18 30.07 -16 51 32.0          17.3 TcEP003704
    CK11O010 KC2011 07 31.84039 17 18 08.13 -16 56 22.9                uEP003595
    CK11O010 HC2011 07 31.87663 17 18 06.95 -16 56 39.7                vEP003204
    CK11O010 KC2011 07 31.88649 17 18 06.66 -16 56 43.9                vEP003204
    CK11O010 KC2011 07 31.88801 17 18 06.66 -16 56 44.1          17.9 TuEP003J87
    CK11O010 KC2011 07 31.88938 17 18 06.58 -16 56 45.1                uEP003595
    CK11O010 KC2011 07 31.89300 17 18 06.36 -16 56 47.1          17.3 TuEP003595
    CK11O010 KC2011 07 31.89458 17 18 06.38 -16 56 47.9          17.4 TvEP003I93
    CK11O010 KC2011 07 31.89487 17 18 06.37 -16 56 47.8          18.1 TuEP003J87
    CK11O010 KC2011 07 31.90017 17 18 06.17 -16 56 50.4          18.0 TuEP003J87
    CK11O010 KC2011 07 31.90179 17 18 06.13 -16 56 51.1          17.2 TvEP003I93
    CK11O010 KC2011 07 31.90342 17 18 06.10 -16 56 52.5          17.0 TwEP003I99
    CK11O010 KC2011 07 31.90862 17 18 05.90 -16 56 54.2          17.3 TvEP003I93
    CK11O010 KC2011 07 31.91006 17 18 05.82 -16 56 54.8          17.0 TvEP003204
    CK11O010 KC2011 07 31.92009 17 18 05.51 -16 56 59.3          16.8 TwEP003I99
    CK11O010 KC2011 07 31.93973 17 18 04.88 -16 57 09.1          17.0 TwEP003I99
    CK11O010 KC2011 08 01.11746417 17 58.74 -16 58 30.3          17.2 TrEP003H21
    CK11O010 KC2011 08 01.13023517 17 58.30 -16 58 36.1          17.3 TrEP003H21
    CK11O010 KC2011 08 01.13128617 17 58.28 -16 58 36.9          17.2 TrEP003H21
    CK11O010 KC2011 08 01.14480217 17 57.86 -16 58 43.9          17.4 TrEP003H21
    CK11O010 |C2011 08 01.23484 17 17 54.70 -16 59 24.3                cEP003H06
    CK11O010 |C2011 08 01.23725 17 17 54.61 -16 59 25.3                cEP003H06
    CK11O010 |C2011 08 01.23966 17 17 54.52 -16 59 26.3          16.5 TcEP003H06
    CK11O010  C2011 08 01.43769 17 17 47.79 -17 00 56.7                oEP003E23
    CK11O010  C2011 08 01.45955 17 17 47.02 -17 01 06.3          17.6 ToEP003E23
    CK11O010  C2011 08 01.47169 17 17 46.60 -17 01 11.9          18.8 ToEP003E23
    CK11O010 QC2011 08 01.50638 17 17 45.47 -17 01 27.7          16.9 TrEP003E12
    CK11O010 KC2011 08 01.86494417 17 33.42 -17 04 15.6          16.9 TuEP003B86
    CK11O010 KC2011 08 01.88670917 17 32.63 -17 04 24.9          17.3 TuEP003B86
    CK11O010 KC2011 08 01.89393017 17 32.39 -17 04 28.1          17.3 TuEP003B86
    CK11O010 KC2011 08 01.90114517 17 32.16 -17 04 31.4          17.3 TuEP003B86
    CK11O010  C2011 08 01.94253 17 17 30.72 -17 04 51.6          17.3 TrEP003104
    CK11O010  C2011 08 01.94907 17 17 30.50 -17 04 54.6          16.5 TrEP003104

Observer details:
104 San Marcello Pistoiese.  Observers L. Tesi, P. Bacci, G. Fagioli,
    A. Aventini.  Measurer P. Bacci.  0.60-m f/4 reflector + CCD.
204 Schiaparelli Observatory.  Observer L. Buzzi.  0.38-m f/6.8 reflector
    + CCD.
595 Farra d'Isonzo.  Observer E. Pettarin.  0.40-m f/4.5 reflector + CCD.
704 Lincoln Laboratory ETS, New Mexico.  Observers M. Blythe, G. Spitz,
    R. Brungard, J. Paige, P. Festler, T. McVey, A. Valdivia.  1.0-m f/2.15
    reflector + CCD.
B86 Sternwarte Hagen.  Observer M. Klein.  0.50-m f/3.0 Deltagraph + CCD.
E12 Siding Spring Survey.  Observer R. H. McNaught.  0.5-m Uppsala Schmidt
    + CCD.
E23 Arcadia.  Observer A. Hidas.  0.35-m Schmidt-Cassegrain + CCD.
H06 RAS Observatory, Mayhill.  Observer H. Sato.  0.51-m f/4.5 reflector + CCD.
H21 Astronomical Research Observatory, Westfield.  Observer R. Holmes.
    Measurers S. Foglia, T. Vorobjov.  0.61-m f/4.0 astrograph + CCD.
I93 St Pardon de Conques.  Observer F. Losse.  0.40-m f/5.0 reflector + CCD.
I99 Observatorio Blanquita, Vaciamadrid.  Observer F. Limon.  0.20-m f/3.3
    Schmidt-Cassegrain + CCD.
J87 La Canada.  Observer J. Lacruz.  0.40-m Ritchey-Chretien + CCD.

Orbital elements:
    C/2011 O1 (LINEAR)
T 2012 July 23.50280 TT                                 MPC
q   4.3529100            (2000.0)            P               Q
                   Peri.  222.99029     +0.10993254     +0.13757301
                   Node    89.23249     -0.40550205     +0.91041315
e   1.0            Incl.   79.88605     -0.90745960     -0.39015583
From 35 observations 2011 July 31-Aug. 1.

Ephemeris:
    C/2011 O1 (LINEAR)
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase   m1    m2
2011 07 02    17 39 35.3 -13 09 16   4.3862  5.3632   162.2     3.3  17.5
...
2011 07 17    17 27 53.4 -15 02 11   4.4118  5.2956   147.3     6.0  17.5
...
2011 07 25    17 22 20.5 -16 03 41   4.4530  5.2601   138.8     7.3  17.5
...
2011 07 31    17 18 37.5 -16 49 53   4.4951  5.2338   132.4     8.2  17.5
2011 08 01    17 18 02.8 -16 57 34   4.5030  5.2294   131.4     8.4  17.5
2011 08 02    17 17 28.9 -17 05 15   4.5110  5.2251   130.3     8.5  17.5
...
2011 08 08    17 14 21.8 -17 51 11   4.5640  5.1991   124.0     9.3  17.5
...
2011 08 16    17 10 58.6 -18 51 47   4.6450  5.1649   115.7    10.2  17.5
...
2011 08 31    17 07 07.9 -20 42 44   4.8201  5.1021   100.5    11.2  17.5

Gareth V. Williams           (C) Copyright 2011 MPC           M.P.E.C. 2011-P03

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