NGC 7331

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Galaxy
NGC 7331
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Image taken with a 60 cm telescope
Image taken with a 60 cm telescope
AladinLite
Constellation Pegasus
Position
equinox :  J2000.0 , epoch : J2000.0
Right ascension 22 h 37 m 04.0 s
declination + 34 ° 24 ′ 56 ″
Appearance
Morphological type SA (s) b / HII / LINER  
Brightness  (visual) 9.5 likes
Brightness  (B-band) 10.3 mag
Angular expansion 10.2 ′ × 4.2 ′
Position angle 171 °
Surface brightness 13.4 mag / arcmin²
Physical data
Affiliation NGC-7331 group
LGG 459  
Redshift 0.002732 ± 0.000017  
Radial velocity (818 ± 5) km / s  
Stroke distance
v rad  / H 0 		(46 ± 3)  ·  10 6  ly
(14.1 ± 1.0)  Mpc 
history
discovery Wilhelm Herschel
Discovery date September 6, 1784
Catalog names
NGC  7331 • UGC  12113 • PGC  69327 • CGCG  514-068 • MCG  + 06-49-45 • IRAS  22347 + 3409 • 2MASX  J22370410 + 3424573 • GC  4815 • H  I 53 • h  2172 •

NGC 7331 is a spiral galaxy of Hubble type Sbc in the constellation Pegasus at the northern sky . It is estimated to be 46 million light-years away from the Milky Way and has a disk diameter of about 140,000 ly. a. the dwarf galaxy NGC 7337 .

The object was discovered on September 6, 1784 by the German-British astronomer Wilhelm Herschel .

NGC 7331 group (LGG 459)

Galaxy Alternative name Distance / million Lj
NGC 7331 PGC 69327 46
NGC 7320 PGC 69270 45
NGC 7363 PGC 69580 310 (?)
PGC 69173 UGC 12082 45
PGC 69019 UGC 12060 49

Web links

Individual evidence

  1. ↑ a b c d e NASA / IPAC EXTRAGALACTIC DATABASE
  2. ↑ a b c d e SEDS : NGC 7331
  3. ↑ Seligman