Supernova 2004et in NGC 6946
This page is devoted to information on Supernova 2004et in NGC 6946.   Basic information on this SN, including the last reported brightness, on this Supernova can be found on the main page.  Information on the original web pages for many of these images can be found on the updates and links web pages.
Discovered by
Stefano Moretti (Italy)
during an almost full moon.  
Our second brightest SN of the year, this one is another type II.  
The host galaxy
NGC 6946
has been the host of 7 other supernovae, making it the most prolific
supernova producer.  
An image taken by Yasuo Sano on 2004/09/19.665
shows nothing at this location.  
This supernova first showed up on a TAROT Telescope image
taken on 2004/09/22.983 at Mag 15.17R, by 2 days later it
had brightened to Mag 12.7, which pinpoints this as very near
the date of the explosion.  
We have a DSS Photometry reference image made by Odd Trondal. 
Icon generated from
James R. Foster's image. 
This supernova is in the
Constellation Cepheus very near
the border with Cygnus.
The following is a list of images of this SN, in chronological order. Click on the name in the "Image Credit" column to see the image. Times and dates are in UT unless otherwise noted. If you know of any others, please tell me!
Image Credit | Date | Mag | Filter | Comments |
---|---|---|---|---|
Jørgen Albertsen image | 2004/09/25.063 | 12.9 | C | Prediscovery |
Stefano Moretti image | 2004/09/27.845 | 12.8 | C | Discovery, mirror |
Stefano Moretti image | 2004/09/28.789 | 12.8 | C | Confirmation |
King's University College Obs image | 2004/09/29 | C | ||
Carsten Arnholm image | 2004/09/29.792 | 12.7 | C | larger version |
Lode Stevens image | 2004/09/29.858 | C | color | |
Ole Nielsen image | 2004/09/29.878 | 12.4 | CR | |
O. Thizy image | 2004/09/29.960 | C | ||
Odd Trondal image | 2004/09/29.961 | 12.3 | CR | mirror, mirror |
JM Llapasset image | 2004/12/05.734 | 13.1 | V | |
Carsten Arnholm image | 2004/09/30.046 | 12.7 | CR | larger version |
Robin Leadbeater image | 2004/09/30 | 12.8 | C | |
Diego Rodriguez image | 2004/09/30.856 | 12.35 | CR | |
Yasuo Sano image | 2004/09/30.585 | 12.83 | CR | |
H. G. Lindberg image | 2004/09/30.837 | 12.7 | CR | |
Tom How image | 2004/09/30.875 | C | web page | |
CCCP image | 2004/10/01 | color | ||
Albert Saikaley image | 2004/10/01 | C | Animated GIF | |
Jürgen Wolf and Dietmar Lilienthal image | 2004/10/01 | |||
Rafael Ferrando image | 2004/10/01.800 | 12.8 | CR | |
Josep M. Bosch image | 2004/10/01.84 | 12.6 | Rc | |
Gerardo Jiménez image | 2004/10/01.977 | 12.7 | C | |
David Nash image | 2004/10/02.062 | C | color | |
JM Llapasset image | 2004/10/02.083 | 12.9 | CR | |
JM Llapasset image | 2004/10/02.069 | 12.9 | R | |
JM Llapasset image | 2004/10/02.076 | 12.7 | V | |
Kevin B. Alton image | 2004/10/02.117 | C | ||
Doug Wheeland image | 2004/10/02 | C | color reference | |
Raymond Poncy image | 2004/10/03.770 | 12.8 | C | |
Paolo Corelli image | 2004/10/03.846 | 12.7 | C | |
Dave Harper image | 2004/10/04.020 | 12.7 | C | color, BW version, Photometry version |
Joaquin Ferreiros image | 2004/10/04.021 | 12.7 | V | |
Günther Eder image | 2004/10/04 | 12.4 | C | |
Vince Tuboly image | 2004/10/04.778 | C | ||
Martin Mobberley image | 2004/10/04.825 | 12.9 | C | color version, web page |
Peter Vasey image | 2004/10/04.844 | C | color | |
Jeremy Shears image | 2004/10/04.871 | C | ||
Nick James image | 2004/10/04.889 | C | ||
Diego Rodriguez image | 2004/10/04.988 | 12.84 | CR | |
Günther Eder image | 2004/10/05 | 12.5 | C | |
Günther Eder image | 2004/10/06 | 12.6 | CR | |
Maurice Gavin image | 2004/10/06.805 | C | mirror | |
Al Ureles image | 2004/10/06.896 | C | ||
Günther Eder image | 2004/10/07 | 12.6 | CR | |
John Sanford image | 2004/10/08.250 | C | ||
Tom W. Harrison image | 2004/10/08 | C | ||
Job Geheniau image | 2004/10/09.958 | 12.7 | C | |
Torbjørn Fredriksen image | 2004/10/09.804 | 12.6 | C | |
Joel Nicolas image | 2004/10/10.812 | 12.86 | CR | |
Buczynski image | 2004/10/10.820 | C | ||
Joel Nicolas image | 2004/10/10.823 | 12.50 | V | |
Joel Nicolas image | 2004/10/10.834 | 12.84 | R | |
Joel Nicolas image | 2004/10/10.843 | 13.25 | B | |
Günther Eder image | 2004/10/11.765 | 12.8 | C | |
Hans Dannhoff image | 2004/10/11.838 | 12.38 | LRGB | |
Iiro Sairanen image | 2004/10/11.951 | C | drawing | |
Diego Rodriguez image | 2004/10/12.863 | 12.46 | CR | |
James Foster image | 2004/10/13.0 | LRGB | color, Wow! local mirror | |
Tom McMahon image | 2004/10/13.175 | 12.9 | C | |
Kopernik image | 2004/10/13.257 | 12.65 13.40 | R B | |
Steve Holak image | updated | C | ||
JM Llapasset image | 2004/10/13.771 | 12.8 | CR | |
JM Llapasset image | 2004/10/13.775 | 12.8 | R | |
JM Llapasset image | 2004/10/13.782 | 12.7 | V | |
Rodrigo Losada image | 2004/10/16.812 | 12.7 | C | mirror |
A. Sucker image | 2004/10/16.861 | 12.75 | V | |
Arnaud Leroy image | 2004/10/16.870 | 12.8 | CR | |
Martin Mobberley image | 2004/10/18.833 | 13.0 | C | mirror |
Stanford University image | 2004/10/21.250 | 12.8 | C | BW version |
JM Llapasset image | 2004/10/22.796 | 13.0 | Ic | |
JM Llapasset image | 2004/10/22.802 | 12.9 | R | |
JM Llapasset image | 2004/10/22.808 | 12.8 | V | |
JM Llapasset image | 2004/10/26.799 | 12.9 | CR | |
JM Llapasset image | 2004/10/26.802 | 12.9 | R | |
JM Llapasset image | 2004/10/26.810 | 12.8 | V | |
JM Llapasset image | 2004/10/26.818 | 13.0 | I | |
JB DeVanssay image | 2004/10/26.965 | 12.89 | CR | |
Arnaud Leroy image | 2004/10/30.868 | 13.07 | R | |
JM Llapasset image | 2004/11/02.872 | 13.0 | Ic | |
JM Llapasset image | 2004/11/02.877 | 12.9 | R | |
JM Llapasset image | 2004/11/02.882 | 12.9 | V | |
JM Llapasset image | 2004/11/05.907 | 12.94 | R | |
JM Llapasset image | 2004/11/05.912 | 12.89 | V | |
JM Llapasset image | 2004/11/05.922 | 13.0 | Ic | |
Diego Rodriguez image | 2004/11/08.819 | 12.95 | CR | |
JM Llapasset image | 2004/11/11.737 | 13.0 | CR | |
JM Llapasset image | 2004/11/11.738 | 13.0 | Ic | |
JM Llapasset image | 2004/11/11.740 | 12.95 | R | |
JM Llapasset image | 2004/11/11.745 | 12.92 | V | |
Buczynsk image | 2004/11/12.829 | C | ||
Josep M. Bosch image | 2004/11/13.840 | 12.7 | Rc | |
JM Llapasset image | 2004/11/17.763 | 13.0 | Ic | |
JM Llapasset image | 2004/11/17.767 | 13.0 | R | |
JM Llapasset image | 2004/11/17.771 | 13.0 | V | |
Diego Rodriguez image | 2004/11/21.800 | 13.0 | CR | |
Günther Eder image | 2004/11/25.758 | 12.6 | C | |
Buczynsk image | 2004/12/02.910 | C | ||
JM Llapasset image | 2004/12/05.726 | 12.9 | Ic | |
JM Llapasset image | 2004/12/05.730 | 13.0 | R | |
JM Llapasset image | 2004/12/05.734 | 13.1 | V | |
Buczynsk image | 2004/12/07.812 | 13.1 | C | |
Joaquín Sánchez image | 2004/12/18.960 | 13.3 | CV | |
J. Hannon image | 2004/12/14.010 | 13.1 | C | |
Günther Eder image | 2004/12/15.880 | 12.98 | C | |
Martin Mobberley image | 2004/12/16.783 | C | mirror | |
Günther Eder image | 2004/12/21.757 | 13.04 | C | |
JM Llapasset image | 2005/01/10.7270 | Ic | ||
JM Llapasset image | 2005/01/10.7320 | R | ||
JM Llapasset image | 2005/01/10.7395 | V | ||
JM Llapasset image | 2005/01/10.747 | 13.5 | CR | |
Günther Eder image | 2005/01/17.807 | 14.15 | C | |
H. Lindberg image | 2005/01/31.750 | 15.4 | V | |
W. Cuppens image | 2005/01/22.253 | 13.8 | C | |
JM Llapasset image | 2005/02/04.214 | 15.2 | CR | |
Gregor Duszanowicz image | 2005/02/08.708 | 15.16 | C | |
JM Llapasset image | 2005/02/09.778 | 15.2 | CR | |
Gregor Duszanowicz image | 2005/02/11.715 | 15.2 | C | |
JM Llapasset image | 2005/02/23.224 | 15.4 | CR | |
Gregor Duszanowicz | 2005/03/04.135 | 15.45 | C | |
JM Llapasset image | 2005/02/23.212 | 15.2 | R | |
JM Llapasset image | 2005/02/23.216 | 15.7 | V | |
Carsten A. Arnholm image | 2005/03/30.854 | 15.56 | C | photometry image |
JM Llapasset image | 2005/04/01.135 | 15.8 | R | |
JM Llapasset image | 2005/04/01.140 | 16.1 | V | |
Robin Leadbeater image | 2005/04/09.083 | 15.8 | C | |
Adrian Jones image | 2005/04/17.022 | 15.8 | CR | |
JM Llapasset image | 2005/04/28.125 | 16.0 | CR | mirror |
JM Llapasset image | 2005/05/01.138 | 16.0 | CR | mirror |
J Nicolas image | 2005/05/19.998 | 16.3 | CR | |
JM Llapasset image | 2005/06/02.968 | 16.3 | CR | mirror |
Stefano Moretti image | 2005/06/11.1 | 16.0 | C | |
Robin Leadbeater image | 2005/06/15.940 | 16.4 | CR | |
JM Llapasset image | 2005/06/17.979 | 16.6 | CR | mirror |
J. Nicolas image | 2005/06/24.880 | 16.6 | CR | |
Richard Crisp image | 2005/06/25 | C | color, more info, larget version | |
F. Bigey image | 2005/06/30.952 | CR | ||
J. Hannon image | 2005/07/04.177 | C | ||
Ken Levin image | 2005/07/10.28 | 17.20 15.71 18.60 |
V R B | color |
J. Nicolas image | 2005/07/25.879 | 16.9 | CR | |
JM Llapasset image | 2005/08/04.047 | 17.2 | CR | mirror |
Enrico Prosperi image | 2005/08/08.93 | 17.6 | CR | |
Diego Rodriguez image | 2005/08/12.909 | 16.95 | CR | |
Enrico Prosperi | 2005/08/13.992 | 17.5 | C | |
JM Llapasset image | 2005/08/13.862 | 17.2 | CR | mirror |
J. Nicolas image | 2005/08/16.834 | 17.2 | CR | |
Wolfgang Kloehr image | 2005/08/19.031 | 17.43 | CR | |
Wolfgang Kloehr image | 2005/08/29.059 | 17.45 | CR | |
Enrico Prosperi image | 2005/08/29.798 | CR | ||
Enrico Prosperi image | 2005/09/12.777 | C | ||
Carsten A. Arnholm image | 2005/09/15.317 | 17.6 | CR | |
JM Llapasset image | 2005/09/14.858 | 17.3 | CR | mirror |
Carsten A. Arnholm image | 2005/09/19.849 | 17.66 | CV | |
Enrico Prosperi image | 2005/10/01.792 | 17.35 | CR | |
JB DeVanssay image | 2005/09/22.985 | 17.3 | CR | |
Ron Arbour image | 2005/10/04.916 | 17.4 | CR | |
JM Llapasset image | 2005/10/06.803 | 17.5 | CR | mirror |
Enrico Prosperi image | 2005/10/09.747 | 17.41 | CR | |
J. Nicolas image | 2005/10/09.763 | 17.6 | CR | |
Enrico Prosperi | 2005/10/15.774 | 17.52 | CR | |
Enrico Prosperi | 2005/10/30.731 | 17.76 | CR | |
CROSS | 2005/11/13 | C | ||
JM Llapasset image | 2005/11/16.782 | 18.0: | CR | |
Enrico Prosperi | 2005/11/20.716 | 17.90 | CR | |
Wolfgang Kloehr image | 2005/11/26.890 | 18.15 | CR | |
Enrico Prosperi image | 2005/12/18.708 | 18.8 | CR | |
Joel Nicolas image | 2005/12/19.748 | 18.6 | CR | |
JM Llapasset image | 2005/12/20.746 | 18.4 | CR | mirror |
Joel Nicolas image | 2005/12/21.806 | 18.5 | CR | |
Joel Nicolas image | 2006/01/31.757 | 19.0: | CR |