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COMET C/2006  Q1 (McNAUGHT)

IAUC 8742: COMET C/2006 Q1 (McNAUGHT)

    R. H. McNaught reports his discovery of a comet (discovery observation tabulated below) on CCD images obtained with the 0.5-m Uppsala Schmidt telescope in the course of the Siding Spring Survey, noting a soft image with an apparent coma diameter of about 8" in 4" seeing; his observations on Aug. 21.73 and 21.78 UT showed the comet to be again slightly diffuse, with deep exposures showing a diffuse condensation and a 20"-diameter coma.  CCD images taken at low altitude by J. Young with the 0.61-m reflector at Table Mountain on Aug. 23.5 show a round, 8" coma with a hint of central condensation, with no suggestion of any tail in long exposures.

2006 UT                 R.A. (2000)      Decl.             Mag

Aug. 20.74130         5 24 12.81     -25 25 43.5         17.8

Photometry obtained with FOCAS-II software

COD B96

CON BRIXIIS observatory  -  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

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

C/2006 Q1     17/07/2010 23:23:53  18.58  17.70  17.36  17.36                 2.9  18.2  B96

C/2006 Q1     17/07/2010 23:23:53*  0.21   0.21   0.19   0.36                   8   5.1  USN

C/2006 Q1     18/07/2010 22:47:24  18.15  17.29  16.90  16.63  16.40  16.28   2.5  18.1  B96

C/2006 Q1     18/07/2010 22:47:24*  0.16   0.23   0.28   0.33   0.33   0.35    10   3.8  CMC