Supernova 2009dd in NGC 4088

This page is devoted to information on Supernova 2009dd in NGC 4088.   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 Giancarlo Cortini (Italy); Alessandro Dimai and Elisa Londero (CROSS) (Italy).   The brightest SN of the year so far, this one is a young type II.   We have a DSS Photometry reference image made by Odd Trondal (which happens to show SN 1991G).  Icon generated from the CROSS discovery image.   This supernova is in the Constellation Ursa Major.

Web pages dedicated to this SN.
• CROSS discovery in Italian [Translate]
• Cloudy night web discussion
• SNWeb has a 2009dd page

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
Koichi Itagaki	2009/04/02.558	> 18	C	Latest negative image
Riccardo Mancini and Fabio Briganti	2009/04/04.87	14.4	C	Prediscovery
Yoji Hirose	2009/04/07.692	14.3	C	Prediscovery
Koichi Itagaki	2009/04/09.582	14.5	C	Prediscovery
CROSS	2009/04/13.05	13.8	C	Discovery
Giancarlo Cortini	2009/04/13.9	13.9	C	Discovery
Bernd Gaehrken	2009/04/14.938	14	C
Joseph Brimacombe	2009/04/15.649	14.3	C
Ivan Sergey	2009/04/15.836	13.5	CR	mirror
Artyom Novichonok	2009/04/15.972	14.6	CR
Enrico Prosperi	2009/04/15.980	14.0	C
Geroge Potter	2009/04/16		C	"bad astronomy" link
William Wiethoff	2009/04/16.236		C
Stan Howerton	2009/04/16.245	14.3	C
Ariel Parsons	2009/04/17.00		V
Jordi Camarasa	2009/04/17.906	13.72	R
Joel Nicolas	2009/04/17.920	14.1	CR
David Storey	2009/04/17.925	14.2	C	mirror
Joel Nicolas	2009/04/17.942	14.2	R
Joel Nicolas	2009/04/17.945	14.5	V
Pepe Mantica	2009/04/18.001		C
Pepe Mantica	2009/04/18.006		RGB	full size image
Martin Mobberley	2009/04/18.890		C
John Murphy	2009/04/18.914		C
Paolo Corelli	2009/04/18.938	14.1	V
Oleg Milantiev	2009/04/19.222		C
Marc Serrau	2009/04/19.886	14.3	B
Marc Serrau	2009/04/19.894	14.5	V
Marc Serrau	2009/04/19.900	13.8	I
Marc Serrau	2009/04/19.923	13.5	R
Stan Howerton	2009/04/20.180	13.8	C
Diego Rodriguez	2009/04/20.887	13.8	CR
Marko Kamarainen	2009/04/20.909		C
Joel Nicolas	2009/04/20.910	14.0	V
Rodrigo Losada	2009/04/21.854	14.2	CR
John Skourou	2009/04/21.917		LPR	color, wide field
Joel Nicolas	2009/04/22.900	14.0	CR
Joel Nicolas	2009/04/22.932	14.5	V
Joel Nicolas	2009/04/22.951	13.6	I
Andrzej Pigulski	2009/04/23.884	14.4	C
Pedro RИ	2009/04/24.866	14.14	C
William Wiethoff	2009/04/26.261		C
Pedro RИ	2009/04/30.909	14.1	C
Pedro RИ	2009/05/01.890	13.6	C
Rafael Ferrando	2009/05/01.927		C
Pedro RИ	2009/05/02.897	14.3	C
Paulo Lobao	2009/05/02.887	12.5	C	full size image
Rafael Benavides	2009/05/02.967		C
JM Llapasset	2009/05/03.837	14.1	CR	mirror
JM Llapasset	2009/05/03.847	13.6	Ic	mirror
JM Llapasset	2009/05/03.850	14.1	Rc	mirror
JM Llapasset	2009/05/03.854	14.7	V	mirror
Mark S. Deprest	2009/05/04		C	AAPOD link
JM Llapasset	2009/05/06.858	14.1	CR
Kopernik	2009/05/15.125	15.46 14.55	B R
Pedro RИ	2009/05/15.868	14.7	CR
Pepe Manteca	2009/05/15.958		C	larger size
JM Llapasset	2009/05/19.842	14.1:	CR	mirror
Markus BЭtikofer	2009/05/19.946		C	color
William Wiethoff	2009/05/24.193		C
David Storey	2009/05/30.033	14.74	C
Pedro RИ	2009/06/10.883	14.5	CR
Pedro RИ	2009/06/11.885	14.7	CR
Gustavo Muler	2009/06/13.950	13.9	R
Pedro RИ	2009/06/20.925	14.05	CR
Pedro RИ	2009/07/10.899	14.08	CR
Pedro RИ	2009/07/11.898	14.89	CR

Light curves and Spectra:
• SNWeb Measurements and light curve.