[vsnet-campaign-ip 98] (No Subject in original)

[Ryoko Ishioka <ishioka@kusastro.kyoto-u.ac.jp>]

vsnet-ip@ooruri.kusastro.kyoto-u.ac.jp,
vsnet-outburst@ooruri.kusastro.kyoto-u.ac.jp
Subject: HT Cam in outburst! URGENT observations are needed!
From: Ryoko Ishioka <ishioka@kusastro.kyoto-u.ac.jp>
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HT Cam bright outburst!

   As Eddy Muyllaert (Oostende, Belgium) reported, HT Cam (a ultra 
short-period CV; also renowned for its infrequent very brief outbursts) 
is undergoing an unprecedentedly bright outburst!! [vsnet-alert 7617]

All sorts of observations (time-resolved continous photometry, 
spectroscopy, X-ray observation etc.) are MOST URGENTLY needed. 
The object is currently the top priority target of the VSNET campaign. 

The outburst is probably very short (within 3 days) and immediate 
observations are needed. But there still remains the possibility 
that this object is an SU UMa star and this outburst is a superoutburst. 
Please observe this objest as long as possible and keep us informed
of the progress of your observation!

During the last outburst occurred in 2001 Decmber, about 8 min
oscilation was detected. Fot more information of thie object, see
VSNET HT Cam Web page
     (http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/DNe/htcam.html)
and 
PASJ 54, 581 (2002) ishioka et al.
     (http://vsnet.kusastro.kyoto-u.ac.jp/pub/vsnet/preprints/HT_Cam/)

Visual magnitude estimates by VSOLJ members

object    YYYYMMDD(UT)   mag      code
CAMHT     Jan 19.767     12.4    Seq. Henden

Best Regards,
Ryoko Ishioka

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