This page is devoted to information on Supernova 1999by in NGC 2841. Basic information on this SN, including the last reported brightness, on this Supernova can be found on the Bright supernova - 1999 page. Information on the original web pages for many of these images can be found on the Supernova links web page.
Maximum brightness on this supernova occurred sometime around May 12th 1999 when it reached mag 13.2 (computed by taking an average of the observations done that day). This SN is now starting to slowly fade. There is a bright star (mag about 11.1) located 11".7 west and 29".5 north of the supernova.
I decided to take a couple of days off and visit my folks up in the
St. Lawrence river valley. When I got back I discovered this SN
backed up in my e-mail folder. 1999by was discovered by both Ron Arbour
and the Lick Observatory Supernova Search team while it was
still getting brighter. This SN is already the brightest this year, passing
1999ac and
1999aa
very quickly.
"The rise and fall of 1999by" - Yasuro Sano
Web pages dedicated to this SN.
Finder Charts:
The following is a list of images of this SN, in chronological order.
Click on the name in the "observer" column to see the image.
If you know of any others,
please tell me!
Observer | Date | Mag | Filter | Comments |
---|---|---|---|---|
LOSS | 4/25/99 | C | Pre Discovery | |
Ron Arbour | 4/28.8786/99 | C | Pre Discovery | |
LOSS | 4/30.2/99 | 15.9 | C | Discovery Mirror |
Erno Berko | 4/30.826/99 | 15.5 | C | Discovery Mirror |
Ron Arbour | 4/30.8749/99 | 15.1 | C | Discovery |
LOSS | 5/1.2/99 | 15.3 | C | |
Marko Moilanen | 5/2.045/99 | 14.2 | C | |
LOSS | 5/2.2/99 | 14.8 | C | |
Y. Sano | 5/2.549/99 | 14.23 | C | |
LOSS image | Undated | C | Color | |
Hradec Kralove Observatory | Undated | 13.5 | C | |
D. Hanzl | 5/2/99 | 14.6 | V | |
Odd Trondal | 5/3/99 23:32 UT | 14.5 | C | |
Erno Berko | 5/3.851/99 | 14.0 | C | |
Josep MŞ Bosch | 5/3.91/99 | 14.15 | C | |
Diego Rodríguez | 5/3.92/99 | 14.15 | C | |
Denis Buczynski | 5/3.95001/99 | 14.08 | C | |
Hans Dannhoff image | 5/4/99 00:11 UT | 13.3 | C | |
DAX Observatory | 5/4.873/99 | 13.77 | C | |
Beaver Meadow Observatory Buffalo Astronomical Association | 5/5.135/99 | C | Big | |
Mike Schwartz | 5/5.18/99 | C | ||
Phil Sullivan | 5/5.3/99 | |||
DAX Observatory | 5/5.888 | 13.6 | C | |
Erno Berko | 5/5.896/99 | 13.9 | C | |
Marko Moilanen | 5/5.979/99 | 13.5 | C | |
KenIchi Kadota Seiichi Yoshida | 5/6/99 20:27:16 JST | 13.8 | C | |
Larry Robinson | 5/6.1/99 | C | ||
Bob Kuberek | 5/6.194/99 | C | ||
Yasuo Sano | 5/6.503/99 | 13.3 | C | |
Kereszty Zsolt | 5/6.829/99 | 13.4 | C | |
Torbjřrn Fredriksen | 5/6/99 21:30 | 13.6 | C | |
David Strange | 5/6/99 21:58 | C | Mirror | |
CfA | 5/6/99 | C | ||
KenIchi Kadota Seiichi Yoshida | 5/7/99 19:33:49 JST | 13.8 | C | |
Alain MOISSON | 5/8/99 | 13.15 | C | |
Maximo Suarez Tejera | 5/8.9896/99 | C | ||
Rafael Ferrando image | 5/9.010/99 | 13.34 | C | |
KenIchi Kadota Seiichi Yoshida | 5/9/99 00:21:06 JST | 13.3 | C | |
Rafael Ferrando | 5/9.010/99 | 13.34 | C | |
Antonio Torres | 5/9.052/99 | 14.03 | C | |
Mike Borman | 5/9.222/99 | C | ||
Norbert Stapper image | 5/9/99 22:51 | C | ||
Erno Berko | 5/9.833/99 | 13.3 | C | |
Rolando Ligustri Observatory | 5/9.851/99 | C | ||
Marco Negri Gerardo Sbarufatti | 5/9.861/99 | 12.9 | C | |
Yasuo Sano | 5/10.467/99 | 12.96 | C | With 5/2 and 5/6 images |
Maro Motta image | 5/10/99 | C | ||
Gy. Szabó, B. Csák | 5/10.7986/99 | C | ||
Kereszty Zsolt | 5/10.8076/99 | 13.2 | C | |
DAX Observatory | 5/10.907/99 | 13.0 | C | |
Marko Moilanen | 5/10.986/99 | 13.1 | C | |
Kopernik image | 5/11.054/99 3:15 UT | C | ||
T.I.E. Program | 5/11.646/99 | C | ||
DAX Observatory | 5/11.922/99 | 13.02 | C | |
Rodrigo Losada image | 5/11.981/99 | C | Relinked 2016/03/26||
Ernô Berkó | 5/13/99 20:16 UT | 13.1 | C | |
Konkoly Observatory | 5/15/99 | BW |
original positive negative |
|
Arno van Werven | 5/15.137/99 | C | ||
Ernô Berkó | 5/15/99 19:55 UT | 13.3 | C | |
Ernô Berkó | 5/16/99 19:30 UT | 13.3 | C | |
Ca' Bionda Observatory | Undated | C | ||
Johannes Walter image | Undated | C | ||
Arno van Werven | 5/17.109/99 | C | ||
Ernô Berkó | 5/17/99 19:33 UT | 13.4 | C | |
KenIchi Kadota Seiichi Yoshida | 5/17/99 20:44 JST | 13.5 | C | |
Werner Sabo image | 5/18/99 | C | ||
Ernô Berkó | 5/18/99 19:40 UT | C | ||
Iver Tidemand et al. image | 5/18.958/99 | C | ||
KenIchi Kadota Seiichi Yoshida | 5/19/99 20:32 JST | 13.9 | C | |
Konkoly Observatory | 5/19.871/99 | R | ||
Konkoly Observatory | 5/19.871/99 | GW | ||
APO image | 5/20/99 3:44 UT | C | Nice | |
Marko Moilanen | 5/20.986/99 | 13.6 | C | |
Ernô Berkó | 5/21/99 19:36 UT | C | ||
Yasuro Sano | 5/22.512/99 | 13.5 | C |
Shows the rise and fall with 8 images |
Luis Hernandez A.A.Tenerife | 5/22/99 23:43 UT | C | dead link||
Ernô Berkó | 5/23/99 21:02 UT | 14.3 | C | |
Stephane and Didier Morata | 5/23/99 23:00 UT | V,R,I | color Dead Link? | |
Pedro Ré image | 5/24/99 22:20 UT | 14.06 | C | Comparison image |
Ernô Berkó | 5/25/99 19:46 UT | 14.4 | C | |
Ernô Berkó | 5/26/99 19:48 UT | 15.5 | C | |
Ernô Berkó | 5/27/99 19:47 UT | C | ||
Ernô Berkó | 5/28/99 19:56 UT | C | ||
KenIchi Kadota Seiichi Yoshida | 5/30/99 20:39 JST | 14.5 | C | |
Ernô Berkó | 6/1/99 19:54 UT | C | ||
Ernô Berkó | 6/3/99 20:21 UT | C | ||
Pedro Ré image | 6/3/99 21:52 UT | 14.92 | C | |
Pedro Ré image | 6/5/99 22:24 UT | 15.07 | C | |
FERRERO and PUGLIESI image | 6/5/99 23:00 UT | C | ||
DAX Observatory image | 6/8.902/99 | 14.8 | C | |
Pedro Ré image | 6/9/99 21:43 | 14.75 | C | |
KenIchi Kadota Seiichi Yoshida | 6/12/99 20:28 JST | 15.3 | C | |
Pedro Ré image | 6/21/99 21:25 | 15.2 | C | |
Pedro Ré image | 6/28/99 21:35 | 15.6 | C | |
Marko Moilanen Aki Id | 9/12.087/99 | 17.8 | C | full resolution |
L. Kiss, K. Sárneczky, Gy. Szabó image | 9/24.071/99 | 18.6 | C |
Light curves and Spectra:
Latest Photometry: