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AAVSO International Database

AAVSO Special Notice #259: Possible bright transient in the region of M31

October 19, 2011: Ovcharov et al. announced the detection of a bright transient in the region of M31 in ATEL #3691 (2011 October 19).  They detected an object at R=10.95 on 2011 October 19.818. We are aware of no other confirming observations.

The object is at the following (J2000) coordinates:

RA: 00 44 55.27  Dec: +41 30 58.5

We note that this object is coincident with the blue source LGGS J004455.24+413059.7. Both visual and instrumental follow-up observations are strongly encouraged.

Special Notice 257: Reminder to observe V455 And for HST observations

September 22, 2011: As detailed in AAVSO Alert Notice 448, Dr. Paula Szkody has requested monitoring of the WZ Sge-type cataclysmic variable V455 And through October 10. Observations tonight - September 22/23, tomorrow, and Saturday are crucial.

Special Notice 255: Cataclysmic Variable in Draco = PNV J18422792+4837425

September 14, 2011: IAU CBAT Central Bureau Electronic Telegram 2818 (Daniel W. E. Green, ed.) announces the discovery by Hideo Nishimura, Miyawaki, Kakegawa, Shizuoka-ken, Japan, of a cataclysmic variable in Draco on 2011 Sept. 5.529 UT at magnitude 11.8 (reported by S. Nakano, Sumoto, Japan). The variable was designated PNV J18422792+4837425 when posted on the Central Bureau's TOCP webpage.

Alert Notice 447: Nova Sco 2011 No. 2 = PNV J16364440-4132340 = PNV J16364300-4132460 [V1313 Sco]

September 10, 2011

Event: Nova in Scorpius

Nova Sco 2011 No. 2 = PNV J16364440-4132340 = PNV J16364300-4132460  [V1313 Sco]

Discovered Independently by:
 - John Seach (Chatsworth Island, NSW, Australia)
 - Yuji Nakamura (Kameyama, Mie, Japan)
 
Discovery Date:
 - Seach: 2011 Sep. 06.37 UT (JD 2455810.87)
 - Nakamura: 2011 Sep. 06.4313 (JD 2455810.9313)

Special Notice #252: Upcoming Eclipse of Zeta Aurigae

September 8, 2011:

Jeff Hopkins (Hopkins Phoenix Observatory, Phoenix, AZ) communicates regarding the upcoming eclipse of the 4th-magnitude binary system zeta Aurigae. He writes:

Special Notice #251: Possible transient in Scorpius

September 6, 2011: John Seach (Chatsworth Island, NSW, Australia) reports the detection of a transient object in Scorpius, having a magnitude of 9.8 on 2011 September 6.37 UT (JD 2455810.87).  Observations were made with a DSLR and 50mm f/1.2 lens and 5 second exposure, with limiting magnitude 10.5.  The object is visible on four separate frames taken after the discovery was made.  No object appears at the location of the transient on an image taken 2011 September 5.36 UT.

Alert Notice 446: Supernova 2011‭fe ‬in M101‭ (‬NGC 5457‭) = ‬PSN J14030581+5416254

August 26‭, ‬2011

Discovered by‭:  ‬The Type Ia supernova science working group of the‭ ‬ Palomar Transient Factory‭:  ‬Peter Nugent‭, ‬Lawrence Berkeley National‭ ‬Laboratory‭ (‬LBL‭), ‬University of California at Berkeley‭; ‬Mark‭ ‬Sullivan‭, ‬Oxford University‭; ‬David Bersier‭, ‬Liverpool John Moores‭ ‬University‭ (‬LJMU‭); ‬D‭. ‬A‭. ‬Howell‭, ‬Las Cumbres Observatory Global‭ ‬Telescope Network Inc‭., ‬University of California at Santa Barbara‭; ‬Rollin Thomas‭, ‬LBL‭; ‬Phil James‭, ‬LJMU

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