Skip to main content

special notice

Special Notice #229: Outburst of FS Aurigae

January 24, 2011: Further to AAVSO Alert Notice 428 (2010 Nov 30), the dwarf nova FS Aurigae appears to be in outburst.  The outburst was detected by P. Lake (Wonga Park, Victoria, Australia) at V=14.332 on 2011 Jan 24.0902 (JD 2455585.5902), and confirmed shortly after by R.

Special Notice #222: Bright Supernova in UGC 5189A: SN 2010jl

November 5, 2010: We have been informed by Tim Puckett and by the Central Bureau for Astronomical Telegrams (CBET 2532, Daniel W. E. Green, Ed.) of the discovery of a bright possible supernova in UGC 5189A by J. Newton and Puckett, Portal, AZ, on November 3.52 UT at unfiltered magnitude 13.5. Confirming images (limiting magnitude 19.1) by Puckett on Nov. 4.50 UT showed the object at magnitude 12.9./p>

Special Notice #221: Infrequent Outburst of the SU UMa Variable HT Cas

November 2, 2010: As reported by Tim Parson (Circle Pines, Minnesota, USA) and confirmed by Pavol Dubovsky (Kolonica, Slovakia), the infrequently-outbursting dwarf nova HT Cas is in outburst.  Parson observed HT Cas in outburst at m(vis)=12.9 on JD 2455502.93 (2010 November 2.43), and the outburst was confirmed by Dubovsky at m(vis)=12.4 on JD 2455503.3 (2010 November 2.8).  The last confirmed well-observed outburst of this star occurred on 2008 January 10.  Observations of this variable are strongly encouraged at this time.  Both visual and CCD observations are en

Special Notice #216: Two new FU Orionis variables in Cygnus

August 27, 2010: Two new eruptive, pre-main sequence stars of FU Orionis type have recently been discovered in Cygnus.  Observations of both are encouraged to better characterize the behaviors of these two objects.

Special Notice #214: Outburst of V592 Her

August 1, 2010: Maciej Reszelski has reported an outburst of V592 Her at CR=14.14mag. This WZ Sge variable last had a superoutburst on August 26, 1998, when it reached 12th magnitudes. In quiescence, V592 Her is fainter than 20th magnitude.

V592 Her is located at RA 16 30 56.37 DEC +21 16 58.2 (J2000).

Special Notice Archive


This AAVSO Special Notice Archive page is obsolete as of July 31, 2017. The Special Notices have been discontinued. The active page which includes all published Special Notices is:


AAVSO 49 Bay State Rd. Cambridge, MA 02138 617-354-0484