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nova

Alert Notice 629: Nova in Sagittarius - N Sgr 2018 = PNV J18040967-1803581

April 11, 2018

Event: Nova in Sagittarius - N Sgr 2018 = PNV J18040967-1803581

Discovered independently by:
- Tadashi Kojima (Tsumagoi, Gunma-ken, Japan; reported to CBAT by S. Nakano)
- Hideo Nishimura (Kakegawa, Shizuoka-ken, Japan; reported to CBAT by S. Nakano)
- Yuji Nakamura (Kameyama, Mie, Japan; reported to CBAT by M. Soma)

Alert Notice 627: Nova in Canis Major - N CMa 2018 = TCP J07134590-2112330

March 26, 2018

Event: Nova in Canis Major - Nova CMa 2018 = TCP J07134590-2112330

Discovered by: Yuji Nakamura (Kameyama, Mie, Japan) (reported to CBAT by M. Soma, National Astronomical Observatory of Japan)

Discovery magnitude: CCD magnitude 12.0, using a 10-cm f/3 reflector

Discovery date: 2018 March 24.496 UT

Coordinates (2000.0): R.A. 07 13 45.84  Decl. -21 12 31.3  (from VSX)

Alert Notice 623: Observations of V1017 Sgr requested

March 16, 2018: Dr. Jennifer Sokoloski (Columbia University) and colleagues (led by Dr. Koji Mukai, NASA Goddard Space Flight Center) have requested AAVSO assistance in observing the nova/dwarf nova V1017 Sgr in preparation for an XMM-Newton observation scheduled for 2018 March 23 or 24.

Confirmation that the system is not in dwarf-nova outburst as of March 23 is needed so that the XMM observation may take place.

Alert Notice 622: N Oph 2018 No. 2 = TCP J17140253-2849233 = PNV J17140261-2849237

March 15, 2018

Event: Nova in Ophiuchus - N Oph 2018 No. 2 = PNV J17140261-2849237 = PNV J17140261-2849237

Discovered Independently by:
- Hideo Nishimura (Kakegawa, Shizuoka-ken, Japan, reported by S. Nakano)
- Tadashi Kojima (Tsumagoi, Gunma-ken, Japan, reported by S. Nakano)
- Koichi Nishiyama (Kurume, Japan) and Fujio Kabashima (Miyaki, Japan)

Alert Notice 620: Coverage of Nova LMC 1996 (OGLE-2018-NOVA-01) outburst needed now

This Alert Notice has been edited to correct a typographical error, and to correct the statement that the LMC was not well placed for coverage from Chile; AAVSO coverage was requested to broaden the coverage in longitude. Apologies for the errors - EOW

March 14, 2018: Dr. Frederick Walter (Stony Brook University) has requested AAVSO observers, particularly those in South Africa, Australia, and New Zealand, to monitor the current outburst of the recurrent nova Nova LMC 1996 = OGLE-2018-NOVA-01.

Alert Notice 619: Nova Ophiuchi 2018 = PNV J17244011-2421463

March 6, 2018

Event: Nova in Ophiuchus - Nova Oph 2018 = PNV J17244011-2421463

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

Discovery magnitude: unfiltered CCD magnitude 12.5 (on three frames, using Canon EOS 6D digital camera + 200-mm f/3.2 lens)

AAVSO Alert Notice 616: Nova Sco 2018 No. 2 = PNV J16484962-4457032

February 13, 2018

Event: Nova in Scorpius: Nova Sco 2018 No. 2 = PNV J16484962-4457032

Discovered by: Hideo Nishimura (Kakegawa, Shizuoka-ken, Japan, reported by S. Nakano, Sumoto, Japan, via CBET 4488)

Discovery magnitude: unfiltered CCD magnitude 11.7 (on five frames using a Canon EOS 6D digital camera+200-mm-f.l. f/3.2 lens)

Discovery date: 2018 February 6.863 UT
 
Coordinates (2000.0): R.A. 16 48 49.62  Decl. -44 57 03.2

Alert Notice 615: ASASSN-18ca = PNV J00423439+4044255 - Probable Nova in M31

February 12, 2018

Event: Probable Nova in M31: ASASSN-18ca = PNV J00423439+4044255

Discovered independently by:
- Koichi Itagaki (Yamagata, Japan; reported via CBAT TOCP)
- All Sky Automated Survey for SuperNovae (ASAS-SN) (reported by J. Brimacombe et al. in ATel #11275)

Alert Notice 613: Nova Cir 2018 - PNV J13532700-6725110

January 31, 2018

Event: Nova in Circinus  -  Nova Cir 2018 = PNV J13532700-6725110

Discovered by: John Seach (Chatsworth Island, NSW, Australia)

Discovery magnitude: 9.1 unfiltered CCD (on three images, using DSLR with 50 mm f/1.2 lens)

Alert Notice 612: Nova Sco 2018 - PNV J17180658-3204279

January 31, 2018

Event: Nova in Scorpius  -  Nova Sco 2018 = PNV J17180658-3204279

Discovered by: Hideo Nishimura (Kakegawa, Shizuoka-ken, Japan), reported by S. Nakano (Sumoto, Japan)

Discovery magnitude: unfiltered CCD magnitude 11.0 (three 10-second images using DSLR with 200-mm f/3.2 lens)

Discovery date: 2018 January 17.869 UT
 
Coordinates (2000.0): R.A. 17 18 06.37  Decl. -32 04 27.7 (from VSX)

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