supernova

Alert Notice 299: 0242-30B Supernova 2003B near NGC 1097

THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS
25 Birch Street, Cambridge, MA 02138 USA
INTERNET: aavso@aavso.org
Tel. 617-354-0484 Fax 617-354-0665

AAVSO ALERT NOTICE 299 (January 7, 2003)

SUBJECT: 0242-30B SUPERNOVA 2003B NEAR NGC 1097

0242-30B SUPERNOVA 2003B NEAR NGC 1097 (FORNAX)

Event: Supernova

Discovered By: R. Evans, Hazelbrook, N.S.W. (IAUC No. 8042)

Alert Notice 300: 1009+03B Supernova 2003cg in NGC 3169

THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS
25 Birch Street, Cambridge, MA 02138 USA
INTERNET: aavso@aavso.org
Tel. 617-354-0484 Fax 617-354-0665

AAVSO ALERT NOTICE 300 (March 24, 2003)

SUBJECT: 1009+03B SUPERNOVA 2003CG IN NGC 3169

1009+03B SUPERNOVA 2003CG IN NGC 3169 (SEXTANS)

Event: Supernova

Independently Discovered By: K. Itagati, Teppo-machi, Yamagata, Japan; R. Arbour, South Wonston, Hampshire, England (IAUC No. 8097)

Special Notice #368: Bright transient in M74 - PSN J01364816+1545310

July 26, 2013:  Patrick Schmeer (SPK, Bischmischeim, Germany) reports via baavss-alert and vsnet-alert that a bright (12.4 U) transient, discovered in M74 (NGC 628) on 2013 July 25.80 UT, has been announced on the CBAT Transient Objects Confirmation Page. The discover's name does not appear there. The presence of the transient has been confirmed by Andrzej Pigulski on 2013 July 27 0:00 UT in vsnet-alert 16057.

Alert Notice 479: Supernova 2013aa in NGC 5643 = PSN J14323388-4413278

February 17, 2013

Event: Supernova 2013aa in NGC 5643 = PSN J14323388-4413278

Discovered by: Stuart Parker (Canterbury, New Zealand)

Discovery Date: 2013 Feb. 13.621 UT

Discovery Magnitude
: red mag 11.9 on a 30-s unfiltered CCD image taken with a 30-cm Astro-Tech AT12RC Ritchey-Chretien astrograph (+ ST10 camera) at his Parkdale Observatory in the course of the Backyard Observatory Supernova Search (BOSS)

Aviso Especial de AAVSO #337 (actualizado): supernova brillante de tipo Ia en la galaxia NGC 5643 (Lupus)

17 de febrero de 2013: Stuart Parker (Canterbury, Nueva Zelanda), del equipo BOSS, ha descubierto una brillante supernova en la galaxia espiral NGC 5643 en la constelación de Lupus.
Originalmente el objeto fue anunciado en la página de confirmación de objetos transitorios de la CBAT, IAU donde se le dio la designación provisoria PSN J14323388-4413278.

Special Notice #318: SN 2012hr, a Type Ia supernova prior to maximum

December 23, 2012: SN 2012hr was discovered by Peter Marples (Loganholme, QLD, Australia, Backyard Observatory Supernova Search (BOSS)) [not by Colin Drescher (Calamvale, QLD, Australia; BOSS) as originally reported in AAVSO Special Notice #318; Drescher reported Marples' discovery to CBAT as announced in CBET 3346] on 2012 December 16.53.  The object was discovered at a red magnitude of 14.8.  Subsequent spectroscopy by Milisavljevic et al. and Morrell et al.

Special Notice #312: Supernova 2012gx in MCG -02-2-72 = PSN J00380175-1351395

November 27, 2012: IAU Central Bureau Electronic Telegram 3314 (Daniel W. E. Green, ed.) announces the discovery by A. J. Drake, S. G. Djorgovski, M. J. Graham, A. Mahabal, and R. Williams (California Institute of Technology); R. H. McNaught (Australian National University); J. L. Prieto (Princeton University); M. Catelan (Pontificia Universidad Catolica de Chile); and S. M. Larson and E.