NGC 9391, Barred Spiral Galaxy

Spiral Galaxy UGC 9391- Supernova 2003 du

Galaxy UGC 9391 and Supernova 2003 du
Image taken with an ST-9E CCD camera thru Kopernik's 20 inch F/8.1 telescope. Image taken under poor seeing conditions at 3:15 UT on May 19, 2003. The field of view is 8x8 arc minutes with North at the top.

Supernova 2003 du:

Discovered April 22nd, 2003, by Mike Schwartz of LOTOSS.
Magnitude at discovery: 15.9
Type: Ia
The supernova is magnitude 14.36 in the Kopernik image, taken on May 19, 2003 at 3:15 UT.

Follow this Link to a NASA Web site on supernovas. It has a very nice animation and a description of what these objects are.

Spiral Galaxy UGC 9391:

This 15.0 magnitude galaxy is in the constellation of Draco. It is a face-on spiral galaxy that is relatively dim and has a low surface brightness. Unfortunately, because of the poor seeing conditions, the Kopernik image above does not show the structure of the arms.

Based on the published red shift, (and a Hubble Constant of 62 Km/sec per Mpc) a rough distance estimate for UGC 9391 and SN 2003 du is 100 million light years, with a galaxy diameter of about 50,000 light years.

UGC 9391
Magnitude: 15.0
Constellation: Draco
RA: 14h 34m 36.4s
Dec: +59° 20' 16" Epoch 2000
Size (mins): 1.6' x 1.0'
Classification: SBdm V, Barred Spiral, Luminosity Class V

Click below to

George Normandin, KAS

May 19th, 2003