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CBET nr. 3260: COMET P/2012 T7 (VOROBJOV)

     Tomas Vorobjov, Bratislava, Slovak Republic, reports his discovery of a comet on three 120-s images that he took remotely with Alexander Kostin (Houston, TX, U.S.A.) using a 0.81-m f/7 Ritchey-Chretien reflector located at the Mt. Lemmon SkyCenter via the Sierra Stars Observatory Network (discovery observations tabulated below) in the course of a minor-planet search survey undertaken as part of the International Astronomical Search Collaboration

(IASC) school campaigns.  Vorobjov asked R. Holmes (Ashmore, IL, USA) to obtain follow-up observations the following night, and twenty-four stacked images taken by Holmes (0.61-m f/4 astrograph; measured by Vorobjov and S.

Foglia) on Oct. 16.4 UT revealed a 6" coma and a tail 25" long in p.a. 260 deg.

     After posting on the Minor Planet Center's NEOCP webpage, other CCD astrometrists have ....

.... Erik Bryssinck (Kruibeke, Belgium; seven stacked, unfiltered, 180-s images taken remotely using a 0.43-m f/6.8 astrograph located at the RAS Observatory near Mayhill, part of the iTelescope network; Oct. 18.3) finds a diffuse coma about 17" in diameter with a hint of a tail 23" long to the northwest in p.a. 316 deg; he adds that astrometry was difficult due the lack of a central condensation.

Comet P/2012 T7 (VOROBJOV)

Photometric data obtained from FOCAS-II software

COD B96

CON BRIXIIS Observatory - Eyckensbeekstraat 2, B-9150 Kruibeke, Belgium

CATALOG: USNO A2.0 / CMC-14 - BAND: R

                                   10x10  20x20  30x30  40x40  50x50  60x60   SNR   SB   COD

OBJECT        DATE       TIME        +/-    +/-    +/-    +/-    +/-    +/-     N  FWHM  CAT

------------  ---------- --------  -----  -----  -----  -----  -----  -----  ----  ----  ---

P/2012 T7     16/10/2012 22:57:56  18.73  17.98  17.57                        0.5  17.1  B96

P/2012 T7     16/10/2012 22:57:56*  0.00   0.00   0.00                          1   3.5  CMC

P/2012 T7     18/10/2012 06:33:00  18.71  17.69  17.33  17.15  17.14  17.16   4.0  19.3  H06

P/2012 T7     18/10/2012 06:33:00*  0.00   0.00   0.00   0.00   0.00   0.00     1   2.6  CMC