Galaxies NGC 5682, NGC 5683, and NGC 5689
Supernova 2002db
Quasar HB-89 1432+489

Supernova 2002db:

• Discovered: May 18, 2002, by University of California at Berkeley's Katzman Automatic Imaging Telescope.
• Magnitude 17.6 at discovery, and 16.99 in the Kopernik image.
• Type: Ia

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 Galaxies NGC 5682 and NGC 5689 (upper left in Kopernik image) in the Constellation of Bootes have nearly the same red shift. They form a non-interacting pair. Both appear to be barred spirals, but since NGC 5689 is nearly edge-on, it is difficult to determine its type. In the Kopernik image, taken under poor seeing conditions, it is just possible to see the slightly off-center dust lane of NGC 5689.

NGC 5683 is the host of Supernova 2002 db, and it is a Barred Spiral Galaxy at a considerably greater distance that the other two galaxies.

Quasi Stellar Object HB-89 1432+489 is magnitude 19.2 and has a red shift of 1.94, giving a distance estimate of an amazing 12 billion light years! This is one of the most distant objects imaged at Kopernik Observatory.

Using the red shift data from the “NASA Extra-galactic Data Base(NED)”, (and a Hubble Constant of 62 Km per sec., per Megaparsec), one can calculate a rough distance estimate for NGC 5683, and SN 2002bd, of about 571 million light years. The distance of the NGC 5682/5689 galaxy pair is about 120 million light years.

NGC 5682 Magnitude: 14.9 Constellation: Bootes RA: 14h 34m 45.2s Dec: +48° 40' 18" Epoch 2000 Size (mins): 1.8' x 0.5' Classification: SB(s)b, Sy1        Barred Spiral Galaxy, S-shaped, Seyfert Type I Dreyer description in the NGC:        "Faint, pretty small, extended."	NGC 5683 Magnitude: 15.7 Constellation: Bootes RA: 14h 34m 52.3s Dec: +48° 39' 43" Epoch 2000 Size (mins): 0.7' x 0.6' Classification: SB(s)0/a?, Sy1        Barred Spiral Galaxy, S-shaped, (uncertain), Seyfert Type I Dreyer description in the NGC:        "Faint, very small, little extended."
NGC 5689 Magnitude: 12.6 Constellation: Bootes RA: 14h 35m 29.6s Dec: +48° 44' 35" Epoch 2000 Size (mins): 3.4' x 0.9' Classification: SB(s)0/a:        Barred Spiral Galaxy, S-shaped, (uncertain) Dreyer description in the NGC:        "Considerably bright, pretty large, extended 87°, westward abruptly much brighter middle."	HB-89 1432+489 Magnitude: 19.2 Constellation: Bootes RA: 14h 34m 40.41s Dec: +48° 41' 38.3" Epoch 2000 Red Shift (z): 1.9400 Classification: Quasi Stellar Object        Distance = 12 billion light years.    "HB" = Hewitt+Burbidge QSO Catalog

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George Normandin, KAS

June 2nd, 2002