[vsnet-alert 8885] Re: New(?) comet in Boo

[Tomás Hynek]

It is comet or component of the comet P/Schwassmann-Wachmann (73P).

Regards, Tomas Hynek


----- Original Message ----- 
From: "Grzegorz Pojmanski" <gp at astrouw.edu.pl>
To: <vsnet-alert at kusastro.kyoto-u.ac.jp>
Sent: Friday, March 17, 2006 1:49 AM
Subject: [vsnet-alert 8883] New(?) comet in Boo


> New(?) comet in Boo
>
> Grzegorz Pojmanski, Warsaw University Astronomical Observatory reports:
>
> Using the ASAS3V instrument of The All Sky Automated Survey
> (telephoto lens 200/2.8, diameter 70mm + CCD + Johnsons V  filter,
> 3 minute exposures, pixel size 14.8 arcsec, rms astrometric accuracy:
> 4  arcsec) I have found another apparently cometary object on images
> taken on March 15, 2006.  I could not identify this object using MPC/CBAT 
> pages.
> Search for prediscovery images revealed the same object on the frames 
> taken
> on Mar 14 (I filter), March 12, 09, 06 ,03 (V filter), as well as on image 
> taken
> tonight (Mar 16, I filter).
>
> Observations:
>   DATE    UT                      HJD        RA  (2000)  DEC
> 03/03/2006 06:38:53 (Mar 03.277) 2453797.7815 14:00:29 +13:14.7 13.69 (V)
> 06/03/2006 06:19:20 (Mar 06.263) 2453800.7680 14:04:23 +13:42.9 13.62 (V)
> 09/03/2006 06:43:46 (Mar 09.281) 2453803.7846 14:08:20 +14:14.1 13.38 (V)
> 12/03/2006 06:32:23 (Mar 12.273) 2453806.7769 14:12:18 +14:47.4 13.00 (V)
> 14/03/2006 06:46:15 (Mar 14.283) 2453808.7873 14:14:55 +15:10.9 ----  (I)
> 15/03/2006 06:37:30 (Mar 15.276) 2453809.7806 14:16:17 +15:23.5 12.43 (V)
> 16/03/2006 06:14:32 (Mar 16.261) 2453810.7654 14:17:36 +15:35.9 ----  (I)
>
>
> FWHM of the coma is 60 arcsec;
> Diameter of the ASAS-detected coma (largest contour) is 1.5 arcmin
> with a 2 arcmin tail pointing west.
>
> Simple extrapolation predicts that tonight (Mar 16/17) comet should be 
> visible
> close to the  position: RA,DEC 14:18:55 +15:48.3 .
>
> Images of the comet can be viewed through the following link:
> http://www.astrouw.edu.pl/~gp/asas/asas_c2006_2.html
>
> Regards, Grzegorz Pojmanski