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AAVSO International Database

Special Notice 41x: QX Pup maximum offers observing opportunity

April 21, 2016:  The Mira variable QX Pup (12.4-12.8 I - 14.5-14.7 I) is approaching maximum and was magnitude 13.038 I +/-0.026 on April 16.9723 UT (HMB, J. Hambsch, Mol Belgium). This star is the target of an observing exercise initiated by Arne Henden in 2008 to determine fundamental information on it (http://www.aavso.org/qx-pup).

Special Notice #415: T CrB brighter and bluer - monitoring requested

April 8, 2016: The symbiotic recurrent nova T CrB has entered a super-active state, and it is brighter and bluer than it has been since before its last outburst in 1946. Multicolor and visual ongoing observations are requested.

Alert Notice 542: Continuing observations requested for KIC 08462852

April 8, 2016: Further to AAVSO Alert Notice 532, the AAVSO is requesting ongoing time-series observations of the enigmatic variable object KIC 08462852 (= KIC 8462852) beginning immediately and continuing through at least the end of 2016.

Details on KIC 08462852 (V=11.88) were given in Alert Notice 532.

Observations are requested in order to study not only the aperiodic fading events but also the behavior of the star outside of these events.

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.

Alert Notice 180: 2337+56 Nova Cassiopeiae 1993 [V705 Cas] AND Special request to monitor dwarf novae

February 8, 1994

2337+56 NOVA CASSIOPEIAE 1993  [V705 Cas]

This bright nova, discovered on December 7.47 UT by Syuichi Nakano of Japan at photographic magnitude 6.5 (see AAVSO Notice 179), has been very well monitored by observers worldwide. Its optical light curve, created from observations reported to the AAVSO, indicates it brightened to about visual magnitude 5.7 by mid·Oecember, and then has slowly declined to magnitude 8.4 by February 7, with fluctuations as much as 1 magnitude in amplitude.

Alert Notice 178: 1425-50 Nova Lupi 1993 AND Revised finder chart for 1806-29 Nova Sagittarii 1993 AND Successful completion of ORFEUS Mission AND Outburst of 0409-71 VW Hydri

Spetember 23, 1993

1425-50 NOVA LUPI 1993

We have been informed by our member William Liller, Vina del Mar, Chile, of his photographic discovery, using PROBLICOM, of a nova in Lupus at magnitude 8.0 (average of two photographs, TechPan film plus orange filter) on September 19.02 UT. The 1950 position, precessed from the equinox 2000 measurements provided by R.H. McNaught and G. J. Garradd, Anglo-Australian Observatory, is

RA 14h 28m 26.04s Decl. -500 57' 18.2"

Special Notice #242: SN 2011dh = Supernova in M51 = PSN J13303600+4706330

June 3, 2011: As an update to AAVSO Special Notice #241 (http://www.aavso.org/aavso-special-notice-241), the supernova in M51 has been designated SN 2011dh. Discovery, classification, and observation information have been published in IAU CBET 2736 (Daniel W. E. Green, ed.).

Coordinates: 13:30:05.08 +47:10:11.2  (J2000.0)
Coordinates source is Silverman et al., ATEL 3398

Observations should be submitted to the AAVSO International Database using the name SN 2011dh.

Thank you and good observing!

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