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Special Notice #343: GK Per outburst appears to be underway

March 18, 2013:  The old nova GK Per (N Per 1901), which has dwarf nova outbursts, appears to be going into outburst, according to observations submitted to the AAVSO International Database:

Alert Notice 465: Nova Sagittarii 2012 No. 5 = PSN J18193700-1907400 [V5593 Sgr]

July 20, 2012

Nova Sagittarii 2012 No. 5 = PSN J18193700-1907400  [V5593 Sgr]

Discovered by: Tadashi Kojima (Tsumagoi, Agatsuma-gun, Gunma-ken, Japan) (reported by S. Nakano (Sumoto, Japan)

Discovery Magnitude: mag 12.6 on two frames using a Canon EOS 40D camera (+ 150-mm f/2.8 lens)

Discovery date: 2012 July 16.512 UT

Coordinates: R.A. 18 19 37.0  Decl. -19 07 40 (2000.0)

Special Notice #289: Bright possible nova in Sagittarius = PNV J18202726-2744263 [V5592 Sgr, Nova Sgr 2012 No. 4]

July 7, 2012:  A new, bright (V and unfiltered magnitudes 7-8) object has been independently discovered in Sagittarius by at least four observers. The IAU CBAT TOCP page identifies the object as PNV J18202726-2744263 [V5592 Sgr] and gives the earliest report (Koichi Nishiyama and Fujio Kabashima) date and time of 2012 July 07.4986 UT and their magnitude 7.8 unfiltered CCD.

Coordinates: 18 20 27.26 -27 44 26.3  (2000.0)

Alert Notice 463: Nova Sagittarii 2012 No. 3 = PNV J17522579-2126215 [V5591 Sgr]

July 3, 2012:

Event: Nova Sagittarii 2012 No. 3 = PNV J17522579-2126215  [V5591 Sgr]

Discovered independently by:
 - Koichi Itagaki (Yamagata, Japan, reported by Hitoshi Yamaoka, Kyushu University)
 - Yukio Sakurai (Mito, Ibaraki-ken, Japan)

Discovery Magnitude:
 - Itagaki: magnitude 10.3 on an unfiltered CCD image taken with a 0.21-m reflector
 - Sakurai: magnitude 9.9 on four 20-s frames taken with a Fuji FinePix S2 Digital Camera + Nikon 180-mm f/2.8 lens

Special Notice #273: Possible Nova in Ophiuchus = PNV J17260708-2551454 [V2676 Oph]

March 28, 2012:  A possible nova in Ophiuchus [V2676 Oph] was announced on the IAU CBAT Transient Objects Confirmation Page (TOCP) page with the name PNV J17260708-2551454. It was discovered by H. Nishimura (Shizuoka-ken, Japan) at unfiltered magnitude 12.1 on 2012 March 25.789 UT on three frames using Canon 200-mm f/3.2 lens + Canon EOS 5D Digital Camera. Spectra suggest that the object is an Fe II-type classical nova.

Special Notice #272: Possible Nova in Centaurus = PNV J13410800-5815470 [V1368 Cen]

28 March 2012:  A possible nova in Centaurus was announced on the IAU CBAT Transient Objects Confirmation Page (TOCP) page with the name PNV J13410800-5815470 [V1368 Cen]. It was discovered by John Seach (Chatsworth Island, NSW, Australia) at magnitude 9.2 on 2012 March 23.386 UT using a DSLR with 50 mm f/1.0 lens. Spectra indicate that the object is a classical nova.

Nothing was seen by him down to magnitude 11.0 on his survey images taken on 2012 Mar. 16.396 UT.

Special Notice #271: Correction to AAVSO Special Notice #270

March 27, 2012:  In the email version of AAVSO Special Notice #270 (Possible Recurrent Nova in the LMC = TCP J04550000-7027150), the discovery magnitude was given as U=10.7. It should have been given as unfiltered magnitude 10.7.

We extend our apologies for the error.

This AAVSO Special Notice was compiled by Elizabeth O. Waagen.

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