File:The_Many_Layers_of_NGC_1808_(iotw2320a).jpg · Wikimedia Commons · See Wikimedia Commons
Key facts
- Constellation
- Columba
- Right ascension
- 05 07 42.331
- Declination
- −37 ° 30 ′ 45.88 ″
- Distance
- 41.7 ± 3.9 Mly (12.8 ± 1.2 Mpc )
- Group or cluster
- Dorado Group
- Type
- (R)SAB(s)a
- Size
- ~88,100 ly (27.01 kpc ) (estimated)
- Apparent size v
- 7′.41 × 3′.39
via Wikipedia infobox
Wikidata facts
- Instance of
- spiral galaxy
- Constellation
- Columba
- Distance from Earth
- 12.56
- Image
- The Many Layers of NGC 1808 (iotw2320a).jpg
Show 11 more facts
- catalog code
- SUMSS J050742-373045
- galaxy morphological type
- (R)SAB(s)a
- Commons category
- NGC 1808
- discoverer or inventor
- James Dunlop
- time of discovery or invention
- 1826-05-20
- radial velocity
- 977
- redshift
- 0.003336
- apparent magnitude
- 6.656
- right ascension
- 76.9264292
- declination
- -37.5130500
- epoch
- J2000.0
Sources (2)
via Wikidata · CC0
~2 min read
Encyclopedic overview
NGC 1808 is a barred spiral galaxy located in the southern constellation of Columba, about two degrees to the south and east of Gamma Caeli. It was discovered on 10 May 1826 by Scottish astronomer James Dunlop, who described it as a "faint nebula". The galaxy is a member of the NGC 1808 group, which is part of the larger Dorado Group.
The morphological classification of this galaxy is (R)SAB(s)a, which indicates a spiral galaxy with a weak-bar around the nucleus (SAB), no ring around the bar (s), an outer ring (R), and tightly-wound spiral arms (a). It is inclined by an angle of 57° to the line of sight from the Earth, with the long axis oriented at a position angle of 324°. The disk of gas and stars shows a noticeable warp, and there is a pronounced asymmetry in the distribution of neutral hydrogen and H II regions.
Excerpted from Wikipedia’s “NGC 1808” article, available under the CC BY-SA 4.0 licence.