Skip to main content


Alert Notice 577: SN 2017eaw in NGC 6946 (PSN J20344424+6011359)

Correction: The original announcement of this Alert Notice included the incorrect assignment of observations made by David Boyd to David Blane. The attribution has been corrected in the observations below. We extend sincere apologies to David Boyd for the error. -- EOW  May 17, 2017

May 16, 2017

Event: SN 2017eaw - bright supernova in NGC 6946 (Cepheus)

Discovered by: Patrick Wiggins (Tooele, UT)

Special Notice #23: 0802-27 Supernova 2006mq in ESO 494-G26 (Puppis)

November 6, 2006

Daniel W. E. Green, Central Bureau for Astronomical Telegrams, reports (Central Bureau Electronic Telegram 721) that N. Lee and W. Li report the Lick Observatory Supernova Search (LOSS) discovery of an apparent supernova on unfiltered KAIT images taken on Oct. 22.56 UT (CCD magnitude 12.7) and Nov. 5.50 UT (magnitude 13.2).

SN 2006mq is located 16.6" east and 124.3" south of the center of ESO 494-G26, at:

R.A. = 08h 06m 12.39s, Decl. = -27o 33' 45.4" (2000.0)

Alert Notice 170: 1721-23 Nova Ophiuchi 1993 [V2295 Oph] AND 0946+69 Supernova in NGC 3031 (M81) [SN 1993J] AND 1810-00 FG Serpentis (AS 296)

April 22, 1993

25 Birch Street, Cambridge, MA 02138 USA
BITNET: aavso@cfa SPAN: cfa::aavso
Tel. 617-354-0484 FAX 617-354-0665

AAVSO ALERT NOTICE 170 (April 22, 1993)

1719-23 NOVA OPHIUCHI 1993 [V2295 Oph]

Special Notice #242: SN 2011dh = Supernova in M51 = PSN J13303600+4706330

June 3, 2011: As an update to AAVSO Special Notice #241 (, the supernova in M51 has been designated SN 2011dh. Discovery, classification, and observation information have been published in IAU CBET 2736 (Daniel W. E. Green, ed.).

Coordinates: 13:30:05.08 +47:10:11.2  (J2000.0)
Coordinates source is Silverman et al., ATEL 3398

Observations should be submitted to the AAVSO International Database using the name SN 2011dh.

Thank you and good observing!

Alert Notice 515: SN 2015F in NGC 2442 (PSN J07361576-6930230)

March 31, 2015

Event: Supernova in NGC 2442: SN 2015F = PSN J07361576-6930230

Discovered by: Libert A. G. Monard, Calitzdorp, Western Cape, South Africa

Discovery magnitude: 16.8 unfiltered CCD using a 35-cm RCX400 telescope (+SBIG ST8-XME camera)

Discovery date: 2015 March 9.789 UT

Coordinates:  R.A. 07 36 15.76   Dec. -69 30 23.0  (2000.0)
SN 2015F is located 40" west and 84" north of the center of NGC 2442.

Special Notice #393: Correction to Special Notice #392 [ASASSN-14lp]

December 11, 2014: In AAVSO Special Notice #392, the name of the supernova discovered in NGC 4666 was given as ASASSN-141p. It should have been ASASSN-14lp. That is to say, the text following the dash should
be "fourteen ell pee" and not "fourteen one pee".

Please create charts and submit observations using the name ASASSN-14lp.

Sincere apologies for the error!

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

Special Notice #392: ASASSN-14lp = Type Ia Supernova in NGC 4666 (Virgo)

December 11, 2014: T. W.-S. Holoien et al. announce in The Astronomer's Telegram (ATel) #6795 ( the discovery of a transient in NGC 4666 at magnitude 14.3 V on 2014 December 9.61 UT. The discovery was made in the course of the All Sky Automated Survey for SuperNovae (ASASSN) search, and the object assigned the name ASASSN-14lp. ASASSN-14lp was not seen (<15.3 V) in poor-quality ASASSN images obtained on 2104 Dec. 08.35 UT.


AAVSO 49 Bay State Rd. Cambridge, MA 02138 617-354-0484