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AAVSO Alert Notice

Alert Notice 503: Request for regular monitoring of the symbiotic variable RT Cru

August 6, 2014: Dr. Margarita Karovska (Harvard-Smithsonian Center for Astrophysics) and colleagues have requested AAVSO observer assistance in their campaign on the symbiotic variable RT Cru. Weekly or more frequent monitoring beginning now is requested in support of upcoming Chandra observations still to be scheduled.

Alert Notice 502: EE Cep observations requested for upcoming eclipse

July 9, 2014: The AAVSO requests observations for the upcoming eclipse of EE Cephei, a long-period eclipsing variable. EE Cep has a period of 2,050 days, and shows strong variations in the eclipse light curve from one event to the next. Observations are needed to study the morphology of the upcoming eclipse, which will be used to better understand the shape of the eclipsing disk and how it precesses. Mid-eclipse is predicted to be August 23, 2014, but the early stages of the eclipse may begin as much as a month earlier.

Alert Notice 501: Monitoring requested for HST/COS observations of SBS 1108+574

April 29, 2014: Dr. Peter Garnavich (University of Notre Dame) and Dr. Paula Szkody (University of Washington) have requested the help of AAVSO observers in monitoring the cataclysmic variable SBS 1108+574 (= CSS 120422:111127+571239) in support of upcoming Hubble Space Telescope observations. The HST COS (Cosmic Origins Spectrograph) will be carrying out far-ultraviolet spectroscopy of this target on 2014 May 12-13 UT.

Alert Notice 500: Novae in Scorpius and Cygnus

April 2, 2014

1. Nova Scorpii 2014 = TCP J17154683-3128303
2. Nova Cygni 2014 = PNV J20214234+3103296

1. Nova Scorpii 2014 = TCP J17154683-3128303

Event: Nova Scorpii 2014 = TCP J17154683-3128303

Discovered by: Koichi Nishiyama (Kurume, Japan) and Fujio Kabashima (Miyaki, Japan)

Discovery magnitude: magnitude 10.1 unfiltered CCD, using a 105-mm f/4 camera lens (+SBIG STL6303E camera)

Alert Notice 498: Nova Cephei 2014 = TCP J20542386+6017077

March 10, 2014:

Event: Nova Cephei 2014 = TCP J20542386+6017077

Discovered by: Koichi Nishiyama (Kurume, Japan) and Fujio Kabashima (Miyaki, Japan)

Discovery magnitude: unfiltered CCD magnitude 11.7, using a 105-mm f/4 camera lens + SBIG STL6303E camera

Discovery date: 2014 Mar. 8.792 UT

Alert Notice 497: Nova Sagittarii 2014 = PNV J18250860-2236024 AND Erratum

February 11, 2014

1. Event: Nova Sagittarii 2014 = PNV J18250860-2236024

Discovered by: Sigeru Furuyama (Tone-machi, Ibaraki-ken, Japan) and reported by S. Nakano (Sumoto, Japan)

Discovery magnitude: unfiltered CCD magnitude 8.7, using a 200-mm f/2.8 camera lens + BJ-42L camera

Discovery date: 2014 Jan. 26.857 UT

Coordinates: R.A. 18 25 08.60  Decl. = -22 36 02.4  (2000.0)

Alert Notice 496: Outburst of the recurrent nova V745 Sco

February 7, 2014

Event: Outburst of the recurrent nova V745 Sco

Discovery by: Rod Stubbings (Tetoora Road, VIC, Australia)

Discovery magnitude: 9.0 (visual)

Discovery date: 2014 February 6.694 UT

Coordinates:  R.A. 17 55 22.27   Dec. -33 14 58.5  (2000.0)

Alerta de AAVSO 495: Brillante supernova de tipo Ia PSN J09554214+6940260 y campaña de observación

22 de enero de 2014

Evento: Supernova en M82 (Osa Mayor) = PSN J09554214+6940260

Descubierta por: Stephen J. Fossey (University College London Observatory)

Magnitud al descubrimiento: 11,7 V

Fecha de descubrimiento: enero 21,81, 2014 UT

Coordenadas: A.R. = 09 55 42,15; Decl.= +69 40 25,8 (J2000,0)
PSN J09554214+6940260 está desplazada 54" hacia el oeste y 21" hacia el sur de M82.

Alert Notice 495: Bright Type-Ia Supernova PSN J09554214+6940260 and Observing Campaign

January 22, 2014

Event: Supernova in M82 (Ursa Major) = PSN J09554214+6940260

Discovery by: Stephen J. Fossey (University College London Observatory)

Discovery magnitude
: 11.7 V

Discovery date: 2014 January 21.81 UT

Coordinates: R.A. = 09 55 42.15, Decl.= +69 40 25.8 (2000.0)
PSN J09554214+6940260 is offset 54" west, 21" south from the nucleus of M82

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