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Alert Notice 557: MASTER OT J010603.18-744715.8 = Nova in SMC (Tucana)

October 17, 2016

Event: Nova in the Small Magellanic Cloud (Tucana)

Discovered by: the MASTER-OAFA auto-detection system (reported by V. Shumkov (Lomonosov Moscow State University) et al. in ATel #9621)

Discovery magnitude: 10.9 unfiltered CCD

Alert Notice 546: Campaign on V1687 Cyg (WR 140)

August 3, 2016: Dr. Noel Richardson (University of Toledo) and colleagues have requested AAVSO assistance in optical monitoring of the bright, colliding-winds binary V1687 Cyg (WR 140, HD 193793) as part of their multi-wavelength campaign on this system.

Special Notice #414: SS Cyg monitoring continues for radio campaign

April 5, 2016: Further to AAVSO Alert Notice 536, close monitoring of the cataclysmic variable SS Cyg is urgently requested. Immediate notification of the beginning of the anticipated outburst is crucial and is requested.

The success of the multiwavelength (radio and optical) observing campaign on SS Cyg underway depends on immediate reporting of outburst behavior to trigger multi-site radio observations.

Special Notice #411: RT Cru observations need to be continued

December 15, 2015: Further to AAVSO Alert Notice 503 and AAVSO Special Notice #409, Dr. Margarita Karovska (Harvard-Smithsonian Center for Astrophysics) urgently requests that multicolor and visual AAVSO observations of the symbiotic variable RT Cru continue.

Alert Notice 522: V404 Cyg HST multiwavelength observations scheduled

Correction: In the text below, the date of the detection by the Swift satellite was incorrectly given as 2015 June 16.77197 UT. The correct date is 2015 June 15.77197 UT.

Our sincere apologies for this error!

July 1, 2015:

Special Notice #8: GRB060218

February 22, 2006: The optical afterglow and underlying supernova for GRB060218 continues to brighten and has generated a lot of interest in the scientific community. It is well positioned in the early evening sky for professional and amateur monitoring. The latest coordinates are:

R.A.: 03:21:39.71 Decl.: +16:52:02.1 J2000

Special Notice #198: Possible Outburst of GK Per

March 9, 2010: The old nova (1901) and x-ray source GK Per may be going into outburst. Reports beginning late on 2010 March 6 UT show it brightening from its minimum visual magnitude of about 13.1 to 12.3-12.4.

Alert Notice 340: Request to monitor 1744-06 RS Ophiuchi for multiwavelength campaign AND Correction

September 1, 2006


ALERT NOTICE 340 Correction  (September 1, 2006)


Object: 1744-06 RS OPH

Coordinates: R.A. 17h 50m 13.202s Dec. -06o 42' 28.48" (2000.0)

Alert Notice 346: 1651-32 V1280 Sco = Nova Scorpii 2007

February 16, 2007

Event: Very Bright Nova in Scorpius

This nova, discovered at 9th magnitude 12 days ago, has brightened dramatically in the past few days to 3rd magnitude, becoming one of the brightest novae in the past several years. It has gained the attention of the professional community and will be observed by numerous satellites, including Chandra, Swift, and INTEGRAL.

Special Notice #325: BB Dor monitoring requested for Swift and HST observations

January 21, 2013: AAVSO observations are requested of the SW Sex-type novalike variable BB Dor in support of one and possibly two sets of multiwavelength observations: Dr. Tomohito Ohshima (Department of Astronomy, Kyoto University) and colleagues have triggered Target of Opportunity observations with NASA's Swift gamma-ray burst satellite, and Dr. Boris Gaensicke (Warwick University) is hoping to observe BB Dor in the ultraviolet with HST.


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