Bright Supernova Alert

[PeterM]

Hi all,
Seems there maybe a very bright (mag 12.5) Supernova in Leo.
The new object is in UGC5189A (That's UGC NOT NGC)
http://en.wikipedia.org/wiki/Uppsala_General_Catalogue

More can be found at the site below including the discovery image, so just about anyone with a telescope may want to have an eyeball.
http://www.rochesterastronomy.org/snimages/

PeterM.

[CometGuy]

Thanks for the heads up Peter, will look tommorrow morning

[astroron (Ron)]

Thanks Peter,got it tagged and hopefully have a look tomorrow morning

[mithrandir (Andrew)]

Originally Posted by PeterM

The new object is in UGC5189A

J2000=09:42:53.3+09:29:34

Being a bit picky, UGC5189A is also known as:

MCG+02-25-021
LEDA 27776
PGC 27776
2MFGC 7533

any of which are easier to find in VizieR.

UGC 5189a is only listed in CCA99 which VizieR does not search by default.

One of these centuries Sydney might get a clear night.

[glenc (Glen)]

Thanks Peter.

[timokarhula (Timo)]

Hi, I'm Timo Karhula from Sweden and this is my first post on this forum. I have visited the southern hemisphere 13 times so I have seen lots and lots of southern objects. :-)

I observed the supernova this morning (Nov 8.18 UT). SN2010jl was very easy to find since it is situated only 35' SE of Omikron Leonis. It was the first time I saw a supernova that was brighter than the entire host galaxy, UGC5189A! First, I saw only the exploding star but when I viewed more carefully, I could see some fuzziness around the star which was the galaxy itself. With my 10-inch Dob, I estimated the supernova as magnitude 12.9 but maybe some light from the galaxy can have contributed so it might have been a tenth or two fainter. A 15.3 magnitude star was noted 3' N of the SN.

I also observed two comets this morning. 103P/Hartley was again visible to the naked eye. It was as large as the Full moon but faint. C/2010 V1 (Ikeya-Murakami) seemed to be fainter or more diffuse than two mornings ago but now I used smaller binoculars.

103P/Hartley:
2010 Nov. 8.14 UT: m1=5.7, Dia.=30', naked eye, Timo Karhula (Virsbo, Sweden)
[DC=3 with 8x40 binoculars]

C/2010 V1 (Ikeya-Murakami):
2010 Nov. 8.19 UT: m1=8.7:, Dia.=4', DC=2, 18x50B, Timo Karhula (Virsbo, Sweden)
[Twilight. Seemed fainter / more diffuse twan two mornings ago. Situated only 53' SW of Saturn.]

It was perfect conditions. ZLM 7.0 and temperature -10º.6 C before I went to office.

/Timo Karhula

[DavidU (Dave)]

Welcome Timo. Nicely detailed session. I don't know about the -10.6C though ! A beautiful place Sweden.

Originally Posted by timokarhula

Hi, I'm Timo Karhula from Sweden and this is my first post on this forum. I have visited the southern hemisphere 13 times so I have seen lots and lots of southern objects. :-)

I observed the supernova this morning (Nov 8.18 UT). SN2010jl was very easy to find since it is situated only 35' SE of Omikron Leonis. It was the first time I saw a supernova that was brighter than the entire host galaxy, UGC5189A! First, I saw only the exploding star but when I viewed more carefully, I could see some fuzziness around the star which was the galaxy itself. With my 10-inch Dob, I estimated the supernova as magnitude 12.9 but maybe some light from the galaxy can have contributed so it might have been a tenth or two fainter. A 15.3 magnitude star was noted 3' N of the SN.

I also observed two comets this morning. 103P/Hartley was again visible to the naked eye. It was as large as the Full moon but faint. C/2010 V1 (Ikeya-Murakami) seemed to be fainter or more diffuse than two mornings ago but now I used smaller binoculars.

103P/Hartley:
2010 Nov. 8.14 UT: m1=5.7, Dia.=30', naked eye, Timo Karhula (Virsbo, Sweden)
[DC=3 with 8x40 binoculars]

C/2010 V1 (Ikeya-Murakami):
2010 Nov. 8.19 UT: m1=8.7:, Dia.=4', DC=2, 18x50B, Timo Karhula (Virsbo, Sweden)
[Twilight. Seemed fainter / more diffuse twan two mornings ago. Situated only 53' SW of Saturn.]

It was perfect conditions. ZLM 7.0 and temperature -10º.6 C before I went to office.

/Timo Karhula

[Analog6 (Odille)]

Welcome Timo - Comet Hartley as large as the moon and naked eye visible! Lucky you - I have yet to see it, we have clouds every night here lately.

At least the cold air is nice and clear.