Type Ia Supernova in NGC 4666 (Virgo)

PTS

AAVSO Special Notice #392

December 11, 2014

ASASSN-141p = Type Ia Supernova in NGC 4666 (Virgo)

T. W.-S. Holoien et al. announce in The Astronomer'sTelegram

(ATel) #6795 (http://www.astronomerstelegram.org/?read=6795)the discovery of a transient in NGC 4666 at magnitude 14.3 V on 2014 December9.61 UT. The discovery was made in the course of the All Sky Automated Surveyfor SuperNovae (ASASSN) search, and the object assigned the name ASASSN-141p.ASASSN-141p was not seen

(<15.3 V) in poor-quality ASASSN images obtained on2104 Dec.

08.35 UT.

J. Thorstensen et al. announce in ATel #6801

(http://www.astronomerstelegram.org/?read=6801)that ASASSN-141p is a Type-Ia supernova a few days before maximum.

Observations are requested of this Type-Ia supernova.

Coordinates: RA 12:45:09.101  Dec. -00:27:32.49 (2000.0)

ASASSN-141p is located 12" from the center of NGC4666. It is currently a pre-dawn target, but will become more favorablypositioned as the outburst progresses.

A finder chart for ASASSN-141p with sequence may becreated using the AAVSO Variable Star Plotter (VSX, http://www.aavso.org/vsp).

Please submit observations to the AAVSO InternationalDatabase using the name ASASSN-141p. Once a supernova ID has been assigned bythe Central Bureau for Astronomical Telegrams, please use that name.

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

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PTS

Correction to Special Notice #392


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.

----------------------------------
SUBMIT OBSERVATIONS TO THE AAVSO

Information on submitting observations to the AAVSO may be found at:
http://www.aavso.org/webobs

SPECIAL NOTICE ARCHIVE AND SUBSCRIPTION INFORMATION

A Special Notice archive is available at the following URL:
http://www.aavso.org/special-notice-archive

Subscribing and Unsubscribing may be done at the following URL:
http://www.aavso.org/observation-notification#specialnotices