Galaxies NGC 1355
and NGC 1358 in Eridanus
This is a 14 minute exposure with an
STL-1301E CCD camera thru Kopernik's 20-inch F/8.1 Ritchey Chretien Cassegrain
telescope taken on November 18, 2009 at 4:10 UT.
- Discovered: August 24, 2009, by
Koichi Itagaki of Japan.
- Magnitude 15.5 at discovery, and
18.5 (or dimmer) 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.
Galaxies NGC 1355 and NGC
1358, in the Constellation of Eridanus, form a non-interacting pair.
NGC 1358 appears to be about 3 million light years furthur away than NGC
NGC 1355 is an edge-on galaxy of
uncertain type. It is either a Lenticular Galaxy or a Spiral Galaxy. A
rough distance estimate for NGC 1355 and Supernova 2009im is 170 million
NGC 1358 is a rather unusual face-on
Barred Spiral Galaxy with a small very bright nucleus, a very short bar,
and two almost symmetrical arms that emerge from the ends of the bar. The
low surface brightness arms form a pseudo ring structure and are mostly
traced out by H-II star forming regions. The distance of this galaxy is
roughly 173 million light years.
- NGC 1355
- Constellation: Eridanus
03h 33m 23.6s
- Dec: -04° 59' 56" Epoch
- Size (mins): 1.4' x 0.4'
Classification: S0: sp
edge-on, spindle shaped, (or possibly an edge-on spiral)
Dreyer description in the NGC:
- NGC 1358
- Magnitude: 12.8
03h 33m 39.7s
- Dec: -05° 05 '22" Epoch
- Size (mins): 2.5' x 2.0'
Classification: SAB(r)0/a Sy2
Barred/Non-barred spiral galaxy, with inner ring, Seyfort type II
Deep Sky Field Guide to U2000:
core, smooth envelope."
George Normandin, KAS
December 14th, 2009