The VY Sculptoris-class cataclysmic variable TT Ari has begun its first large decline since its deep minimum of 1982-1985. Observations of TT Ari are urgently requested. The 1982-1985 event reached a minimum of m(vis)=15.5, where it remained for approximately 3.5 years. Observers are asked to closely follow TT Ari through its current decline, and to continue monitoring TT Ari if and when it reaches a stable minimum.
AAVSO Inernational Database
Event: Nova in Sagittarius (V5584 Sgr = N Sgr 2009 No. 4)
Discovered By: Koichi Nishiyama, Kurume, Fukuoka-ken, Japan, and F. Kabashima, Miyaki-cho, Saga-ken, Japan
Discovery Date: Oct. 26.439 UT (two frames from Oct. 26.439 and 26.440)
Discovery Magnitude: unfiltered CCD magnitude 9.3, using a 105-mm f/4 camera lens
Note: This nova is continuing to fade slowly. Please continue monitoring it until further notice. - Elizabeth O. Waagen, 7 April 2020
July 16, 2013: Based on your observations, the HST/COS team will be making the final decision tomorrow afternoon (2013 July 17) or the next morning whether to observe the dwarf nova HS 2214+2845 = V513 Peg on:
V513 Peg (HS 2214+2845) 2013 July 18 21:08:59 through July 19 01:04:23 UT
V513 Peg is 16.8V at minimum and 12.5V at maximum. Please monitor V513 Peg closely through July 19.
NOTE: Table of MAGIC observations revised 14 and 15 May 2012 per Dr. Christopher Mauche.
April 12, 2012: Tom Krajci (KTC, Cloudcroft, NM) reports that a possible nova in Scutum has been announced on the IAU CBAT TOCP page (http://www.cbat.eps.harvard.edu/unconf/tocp.html) as PNV J18562170-0852300. It was discovered at unfiltered magnitude 9.7 on 2012 April 12.7954 UT by Y. Sakurai, Japan, on two 10-second exposures using a digital camera + 180-mm f/2.8 lens. Nothing was visible on an image taken 2012 Apr. 9.79 UT.
October 25, 2011
Event: Outburst of the UGWZ Candidate BW Scl
Apri1 3, 2011
Event: V5588 SGR = NOVA SAGITTARII 2011 No. 2 = PNV J18102135-2305306 [V5588 Sgr]
Discovered by: Koichi Nishiyama, Kurume, Japan, and Fujio Kabashima, Miyaki, Japan
Discovery Date: ~ 2011 March 27.832 UT
Discovery Magnitude: unfiltered CCD magnitude mag 11.7 on two 40-s unfiltered CCD frames using a 105-mm f/4 camera lens (+ SBIG STL6303E camera)
Position: R.A. = 18:10:21.35, Decl. = -23:05:30.6 (equinox 2000.0)
January 3, 2011: The campaign to monitor activity of the peculiar cataclysmic variable FS Aurigae, as announced in AAVSO Alert Notice 428 (see also AAVSO Special Notice #226), continues. Principal Investigator Dr. Vitaly Neustroev reports that the campaign is going well, and that he is very appreciative of your observing efforts and contributions.
December 4, 2010: Further to AAVSO Alert Notice 428, the star FS Aurigae appears to be entering outburst. The star was in quiescence on 2010 December 3.22 (JD 2455533.72; V = 16.3, G. Lubcke) but had risen to V=14.9 on 2010 December 4.23 (JD 2455534.73; R. Campbell). Subsequent observations by H. McGee and A. Novichonok have confirmed that FS Aur is rising. Time series observations of FS Aurigae are encouraged at this time; any and all filters may be used including clear, but V filter is preferred.