2033+59 SUPERNOVA 2004et in NGC 6946 (CEPHEUS)

We have been informed by the Central Bureau for Astronomical Telegrams (Central Bureau Electronic Telegram 95) that T. Zwitter, University of Ljubljana, and U. Munari, Astronomical Observatory, Padova, report that S. Moretti discovered a bright supernova in NGC 6946 at CCD magnitude 12.8 on unfiltered images taken September 27 using a 0.4-m telescope at Ravenna.

Position: SN 2004et is located at

R.A. = 20h 35m 25.4s, Decl. = +60o 07' 17.6" (equinox 2000.0).

A high-resolution spectrogram obtained on September 28 with the 1.82-m telescope (+ echelle spectrograph) in Asiago shows the new object to be a supernova. For more information, please see CBET 95.

NGC 6946 is the home of SN 1980K, which reached visual magnitude 10.7, according to observations in the AAVSO International Database.

AAVSO 'e' and 'f' scale charts of NGC 6946 are available at:

http://www.aavso.org/cgi-bin/searchcharts3.pl?name=ngc%206946

Please use this chart to observe the supernova and report your observations of 2033+59 SN 2004ET to AAVSO, making sure to indicate which comparison stars you used.

Congratulations to S. Moretti on this discovery!

Please report observations to AAVSO using the WebObs online submission tool at www.aavso.org, via email to observations@aavso.org, telephone (617-354-0484), or fax (617-354-0665).

Many thanks for your valuable astronomical contributions!

Good observing,

Elizabeth O. Waagen
Interim Director