Supernovae 2011fe in M101

This page is devoted to information on Supernova 2011fe in M101.   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 links web page.

image Discovered by Palomar Transient Factory (collaboration, mostly in the USA) This one a Type Ia found VERY young, it is possible for this supernova to reach Mag 9.5, making it the brightest in 30 years.   This object was originally given the designation of PTF11kly, and was also know (briefly) as PSN J14030581+5416254.   We have a Photometry reference image made by Odd Trondal.   This supernova is in the constellation Ursa Major.

The PTF team is requesting help from people who observed the galaxy M101 between he dates August 22 and August 24, 2011. We have discovered a new SN in M101 (PTF11kly / SN 2011fe) in this galaxy on August 24, and images of the galaxy recorded during these nights may help establish the exact time of the SN explosion and its early evolution. People who may have useful data are encouarged to contact is by sending an email to

Web pages dedicated to this SN.

Berkley Supernova of the generation
News articlesImage pages/Blogs
AAVSO special notice 250 APOTD 2011/08/26
LBNL news article SEDS 2011fe page
BBC article Flavio Castellani supernova images article Flickr 2011fe images which are linked on this page
Sky and Telescope article M1 Group 2011dh images page
Bad Astronomy article Astro Bob article
Universe Today article SPACE.COM article
Slooh article Atra Materia article
IrishWeather article Blob notice
OPT article Blog notice
Washington Post article Gianluca Masi images and animations
Astronomy Mag's Closest type Ia supernova

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 CreditDateMagFilterComments
HST Cprogenitor
Patrick Wiggins 2011/08/22.157CNot present
Fabio Martinelli 2011/08/22.925CNot Present
PTF 2011/08/2417.2CDiscovery mirror mirror
Marina Costa 2011/08/24.833C compared with Aug 9th image
Mathew A. Marulla
and Tavi A. Grenier
Stan Howerton 2011/08/25.13014.79V
Stan Howerton 2011/08/25.14914.79C
Joseph Brimacombe 2011/08/25.17714.9Cwide field
Faulkes telescope 2011/08/25Ccolor, APOTD 2011/08/26
Bob Koff 2011/08/2514.85C
Thunderf00t 2011/08/25C
Joseph Brimacombe 2011/08/25.8313.8V
Flavio Castellani 2011/08/25.88ccolor
Rauno Parvjnen 2011/08/25.836C
Gianluca Masi 2011/08/25.85313.4C
Rodrigo Losada 2011/08/25.917C
Denis Buczynski 2011/08/25.990C mirror
Kevin Lyons 2011/08/26.125C
Joseph Brimacombe 2011/08/26.15313.9C
Fumitake Watanabe and
Nayoro Hokkaido
2011/08/26.47413.48CR image series
Xavier Bros 2011/08/26.84112.95CR
Martin Mobberley 2011/08/26.844C
Maurice Gavin 2011/08/26.85412.3C
Juanjo González 2011/08/26.87212.8C
Felipe Peña 2011/08/26.93012.7C
Anthony Ayiomamitis 2011/08/26.93813.29C
David Storey 2011/08/26.96013.081V
Joseph Brimacombe 2011/08/27.13113.3Ccolor wide field
Billy Vazquez 2011/08/27.143C
Fumitake Watanabe and
Nayoro Hokkaido
Rick Johnson 2011/08/27RGBcolor
Peter Brintwhistle 2011/08/2713.0R
Steve Martin 2011/08/27Ccolor
Gianluca Masi 2011/08/27.79911.3C
Alessandro Dimai 2011/08/27.80112.9C
Filip Lolic 2011/08/27.831C
Silvia Kowollik 2011/08/27.854C
Pedro Re' 2011/08/27.86112.399CR animated GIF
Xavier Bros 2011/08/27.86512.31CR
Juanjo González 2011/08/27.88612.3R
Miguel Rodríguez 2011/08/27.895C
Maurice Gavin 2011/08/27.90113.0C
Jose Aledo 2011/08/27.906C
Stan Howerton 2011/08/28.10512.68C
Joseph Brimacombe 2011/08/28.12712.9Ccolor
Silvia Kowollik 2011/08/28.358C
Fumitake Watanabe and
Nayoro Hokkaido
Alessandro Dimai 2011/08/28.79412.5C
Giancarlo Cortini 2011/08/28.89111.8R
Rafael Palencia 2011/08/28.85111.71CR
Pedro Re' 2011/08/28.85712.11CR
Ron Arbour 2011/08/28.877C
Felipe Peña 2011/08/28.88511.9C
Juanjo González 2011/08/28.89111.8R
Martin Mobberley 2011/08/28.903C
Maurice Gavin 2011/08/28.90312.3C
Sauro Donati 2011/08/28.91012.8C
Rodrigo Losada 2011/08/28.92712.2CR
William Wiethoff 2011/08/28.151C
Joseph Brimacombe 2011/08/29.142Ccolor
Pula Zlatko 2011/08/29.21C
Matt Wronkiewicz 2011/08/29.22211.8C
Alessandro Dimai 2011/08/29.79412.2C
Gerhard Dangl 2011/08/29.81211.6V
Diego Rodríguez 2011/08/29.83111.6V
Pedro Re' 2011/08/29.85811.822CR
Martin Moberley 2011/08/29.866C
Willian Souza 2011/08/29.89911.693V
Rodrigo Losada 2011/08/29.9111.5CR
Ian Sharp 2011/08/29.917C
Andy Cason 2011/08/30.08511.598V
Joseph Brimacombe 2011/08/30.14811.9C
Joseph Brimacombe 2011/08/30.15612.1C
Patrick Wiggins 2011/08/30.166C
JM Llapasset 2011/08/30.81611.27I
JM Llapasset 2011/08/30.82011.27Rc
JM Llapasset 2011/08/30.82311.41V
JM Llapasset 2011/08/30.82811.62B
JM Llapasset 2011/08/30.83911.14CR
Rafael Benavides 2011/08/30.85410.89CR
Martin Mobberley 2011/08/30.88211.33V
Jose Carrillo 2011/08/30.86511.1R
Stan Howerton 2011/08/31.09911.32V
Joseph Brimacombe 2011/08/31.12112.3C
Maurice Gavin 2011/08/31.849C
Ian Sharp 2011/08/31.917C
Joseph Brimacombe 2011/09/01.10411.8C
Yasuo Sano and
Yasuhiko Murakami
2011/09/01.43010.58CR image series
Giancarlo Cortini 2011/09/01.8211.0C
Torben Taustrup 2011/09/01.848C color
Martin Mobberley 2011/09/01.858C
Maurice Gavin 2011/09/01.865C
Stan Howerton 2011/09/02.09911.1V
Alessandro Dimai 2011/09/02.81910.7C
Fernand Van Den Abbeel 2011/09/02.84410.4CR
Pedro Re' 2011/09/02.85410.077CR
Juanjo González 2011/09/02.9049.9R
Stan Howerton 2011/09/03.08910.7C
William Wiethoff 2011/09/03.15C
Joseph Brimacombe 2011/09/03.16011.4C
Krzysztof Kida 2011/09/03.8310.4C color version
Torben Taustrup 2011/09/03.847C
Denis Buczynski 2011/09/03.8999.9R
Rodrigo Losada 2011/09/03.91710.55CR mirror
Yasuo Sano and
Yasuhiko Murakami
Juanjo González 2011/09/04.65610.1R
J. Carrillo 2011/09/04.82310.2R
Rafael Benavides 2011/09/04.8699.94CR
Martin Mobberley 2011/09/04.869C
Stan Howerton 2011/09/05.10210.5V
William Wiethoff 2011/09/05.143C
Stan Howerton 2011/09/05.13610.67C
Denis Buczynski 2011/09/05.8959.9R
Marko Kämäräinen 2011/09/05.915C
William Wiethoff 2011/09/06.135C
JM Llapasset 2011/09/06.7889.7C
JM Llapasset 2011/09/06.79910.00CR
JM Llapasset 2011/09/06.80010.30I
JM Llapasset 2011/09/06.80410.10Rc
JM Llapasset 2011/09/06.80810.20V
JM Llapasset 2011/09/06.81410.34B
Felipe Peña 2011/09/06.84311.1C
Giancarlo Cortini 2011/09/06.9210.5C
Willian Souza 2011/09/06.94910.0V
Joseph Brimacombe 2011/09/07.10111.2C
Stan Howerton 2011/09/07.11210.2C
Juan-Luis Gonzalez Carballo 2011/09/07.8619.82CR
William Wiethoff 2011/09/08.139C
JM Llapasset 2011/09/08.7959.9CR
JM Llapasset 2011/09/08.79610.30I
JM Llapasset 2011/09/08.80110.06Rc
JM Llapasset 2011/09/08.80410.09V
JM Llapasset 2011/09/08.81110.22B
Maurice Gavin 2011/09/08.838C
Torben Taustrup 2011/09/08.931C
Stan Howerton 2011/09/09.10110.05
Véronique Amat and
Laurent Courier
JM Llapasset 2011/09/09.802 9.94CR
JM Llapasset 2011/09/09.80410.30I
JM Llapasset 2011/09/09.80910.03Rc
JM Llapasset 2011/09/09.81210.06V
JM Llapasset 2011/09/09.81910.24B
Rafael Ferrando 2011/09/09.83910.3CR
Andy Cason 2011/09/10.040CDone without a telescope
Fumitake Watanabe 2011/09/10.46510.37CR
JM Llapasset 2011/09/10.792 9.90CR
JM Llapasset 2011/09/10.79510.36I
JM Llapasset 2011/09/10.79810.02Rc
JM Llapasset 2011/09/10.80010.02V
JM Llapasset 2011/09/10.80710.02B
Marton Mobberley 2011/09/10.821C
Maarten de Vries 2011/09/10.939C
Joseph Brimacombe 2011/09/12.13010.4R
Joseph Brimacombe 2011/09/12.13811.4C
Paul Cannon 2011/09/1210C
Fumitake Watanabe and
Yasuhiko Murakami
JM Llapasset 2011/09/12.7989.90CR
JM Llapasset 2011/09/12.80010.44I
JM Llapasset 2011/09/12.80310.04Rc
JM Llapasset 2011/09/12.80610.30B
Andy Cason 2011/09/13.063CAlso, Done without a telescope
JM Llapasset 2011/09/13.8009.90CR
JM Llapasset 2011/09/13.80310.50I
JM Llapasset 2011/09/13.80710.04Rc
JM Llapasset 2011/09/13.81010.06V
JM Llapasset 2011/09/13.81610.30B
Fernand Van Den Abbeel 2011/09/13.82810.2CR
Maurice Gavin 2011/09/14.815Ccolor
JM Llapasset 2011/09/14.817 9.90CR
JM Llapasset 2011/09/14.81910.51I
JM Llapasset 2011/09/14.82310.07Rc
JM Llapasset 2011/09/14.82510.05V
JM Llapasset 2011/09/14.83010.35B
Stan Howerton 2011/09/15.05410.04V
Albert van Duin 2011/09/15.812C
Denis Buczynski 2011/09/15.85810.4CR
Odd Trondal 2011/09/16.813C
Giancarlo Cortini 2011/09/17.7510.0C
Rafael Ferrando 2011/09/17.84410.4CR
Joseph Brimacombe 2011/09/18.11810.5R
Juanjo González 2011/09/18.81810.7R
Albert Duin 2011/09/18.827Ccolor
Denis Buczynski 2011/09/18.845C
Stan Howerton 2011/09/19.07410.13V
Fredrik Broms 2011/09/19.973C
Joseph Brimacombe 2011/09/20.11410.6CR
JM Llapasset 2011/09/20.79510.30CR
JM Llapasset 2011/09/20.79710.90I
JM Llapasset 2011/09/20.80010.42Rc
JM Llapasset 2011/09/20.80310.35V
JM Llapasset 2011/09/20.80910.75B
Rafael Benavides 2011/09/20.84210.10CR
Dennis Buczynski 2011/09/20.876C
David Storey 2011/09/20.91410.1V
JM Llapasset 2011/09/22.79610.50CR
Stan Howerton 2011/09/23.09310.45V
Joseph Brimacombe 2011/09/23.11210.70R
David Haworth 2011/09/23.171C
Pedro Re' 2011/09/23.81311.31CR
Thorsten Zilch 2011/09/23.82811.4C
Joseph Brimacombe 2011/09/25.12010.60R
JM Llapasset 2011/09/25.77110.50CR
JM Llapasset 2011/09/25.77511.00I
JM Llapasset 2011/09/25.77810.70Rc
JM Llapasset 2011/09/25.78010.65V
Maurice Gavin 2011/09/25.818C
Stan Howerton 2011/09/26.07410.59V
Rafael Benavides 2011/09/26.84010.49CR
Felipe Peña 2011/09/26.88411.0C
JM Llapasset 2011/09/27.78510.80CR
Giancarlo Cortini 2011/09/27.8C
JM Llapasset 2011/09/29.77910.80CR
JM Llapasset 2011/09/29.78510.90I
JM Llapasset 2011/09/29.78710.75Rc
JM Llapasset 2011/09/29.79010.90V
JM Llapasset 2011/09/29.79811.70B
Maurice Gavin 2011/09/29.799C
Horvath Tibor 2011/09/30C
Odd Trondal 2011/09/30.81811.0C
Stan Howerton 2011/10/01.07210.79C
Thorsten Zilch 2011/10/01.82311.5C
JM Llapasset 2011/10/03.77510.90CR
JM Llapasset 2011/10/05.78310.95CR
JM Llapasset 2011/10/05.78710.90I
JM Llapasset 2011/10/05.79011.00Rc
JM Llapasset 2011/10/05.79311.20V
JM Llapasset 2011/10/05.80212.20B
Denis Buczynski 2011/10/05.81111.1C
Giancarlo Cortini 2011/10/08.7512.2C
JM Llapasset 2011/10/10.77711.20CR
JM Llapasset 2011/10/10.77910.90I
JM Llapasset 2011/10/10.78211.56Rc
JM Llapasset 2011/10/10.78511.50V
JM Llapasset 2011/10/10.79312.70B
Joseph Brimacombe 2011/10/14.12510.3R
JM Llapasset 2011/10/14.75511.5CR
JM Llapasset 2011/10/14.76611.1I mirror
JM Llapasset 2011/10/14.76911.5Rc
JM Llapasset 2011/10/14.77111.8V mirror
Giancarlo Cortini 2011/10/15.9012.3C
JM Llapasset 2011/10/16.76111.60CR
Albert van Duin 2011/10/16.77211.5C
Stan Howerton 2011/10/19.04611.98V
JM Llapasset 2011/10/21.74811.90CR
JM Llapasset 2011/10/21.75311.60I
JM Llapasset 2011/10/21.75811.80Rc
JM Llapasset 2011/10/21.76212.10V
Giancarlo Cortini 2011/10/23.7512.5C
Denis Buczynski 2011/10/27.90312.0CR
Denis Buczynski 2011/10/30.02612.1CR
Stan Howerton 2011/11/01.03112.32V
Joel Nicolas 2011/11/10.20812.5CR
Joel Nicolas 2011/11/10.21912.63V
Joel Nicolas 2011/11/13.19612.58I
Joel Nicolas 2011/11/13.20512.57R
Joel Nicolas 2011/11/13.21213.60B
Joel Nicolas 2011/11/13.22112.6CR
Giancarlo Cortini 2011/11/17.8512.8C
JM Llapasset 2011/11/19.17512.8CR
JM Llapasset 2011/11/23.19612.8CR
JM Llapasset 2011/11/23.20012.9I
JM Llapasset 2011/11/23.20312.9Rc
JM Llapasset 2011/11/23.20613.2V
JM Llapasset 2011/11/27.18712.95CR mirror
JM Llapasset 2011/11/27.18913.1I
JM Llapasset 2011/11/27.19113.0Rc
JM Llapasset 2011/11/27.19313.1V
JM Llapasset 2011/11/27.19613.8B
Joel Nicolas 2011/11/27.21813.0CR
Joel Nicolas 2011/11/27.22913.06V
JM Llapasset 2011/12/02.21413.0CR mirror
Thomas Langhans 2011/12/03.57413.0CR
Denis Buczynski 2011/12/15.91613.6CR
JM Llapasset 2011/12/09.19413.3CR
JM Llapasset 2011/12/09.19713.5I
JM Llapasset 2011/12/09.19913.4Rc
JM Llapasset 2011/12/09.20213.4V
David Storey 2011/12/16.84713.47V
JM Llapasset 2011/12/23.17213.6CR
JM Llapasset 2011/12/23.17513.8Rc
JM Llapasset 2011/12/23.17813.7V mirror
Joel Nicolas 2011/12/24.18713.7CR
Joel Nicolas 2011/12/24.19714.2I
Joel Nicolas 2011/12/24.20413.8V
Joel Nicolas 2011/12/24.21313.9R
Dennis Buczynski 2011/12/24.99413.6RC
Thomas Langhans 2011/12/24.52213.8CR
Stan Howerton 2011/12/28.25013.87C
Giancarlo Cortini 2011/12/31.1913.9C
Paul Mortfield 2012/01/05.559C
Massimiliano Martignoni 2012/01/07.91314.1V
Massimiliano Martignoni 2012/01/10.05514.2V
JM Llapasset 2012/01/10.11914.0CR
JM Llapasset 2012/01/10.12514.5Ic
JM Llapasset 2012/01/10.12714.3Rc
JM Llapasset 2012/01/10.13014.1V
JM Llapasset 2012/01/10.13514.4B
Massimiliano Martignoni 2012/01/14.14014.2V
JM Llapasset 2012/01/14.22714.1CR
JM Llapasset 2012/01/14.23114.5Ic
JM Llapasset 2012/01/14.23514.4Rc
JM Llapasset 2012/01/14.23514.2V
Giancarlo Cortini 2012/01/15.1914.2C
Joel Nicolas 2012/01/17.12014.2CR
Joel Nicolas 2012/01/17.13814.9I
Joel Nicolas 2012/01/17.15314.3V
Joel Nicolas 2012/01/17.16414.6R
JM Llapasset 2012/01/18.26414.2CR
Denis Buczynski 2012/01/23.94414.4CR
Massimiliano Martignoni 2012/01/26.10214.5V
JM Llapasset 2012/01/26.21314.3CR
JM Llapasset 2012/01/26.21614.7Ic
JM Llapasset 2012/01/26.22014.7Rc
JM Llapasset 2012/01/26.22314.3V
Massimiliano Martignoni 2012/01/27.07914.5V
William Wiethoff 2012/01/27.368C
Stan Howerton 2012/01/28.29914.6C

Light curves and Spectra:

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David Bishop