NGC 1

NGC 1

NGC 1 seen by 2MASS
Observation data (J2000 epoch)
Constellation Pegasus
Right ascension 00h 07m 15.84s[1]
Declination +27° 42′ 29.1″[1]
Redshift 0.015177 ± 0.000002[1]
Helio radial velocity 4550 ± 1 km/s[1]
Galactocentric velocity 4723 ± 7 km/s[1]
Distance 211 ± 14 Mly
(64.7 ± 4.5 Mpc)[2]
Apparent magnitude (V) 13.65[1]
Absolute magnitude (V) -22.08[1]
Characteristics
Type SbbPa Ring[1]
Apparent size (V) 1.6' X 1.2',[1] 1'.549 x 1'.023
Other designations
UGC 00057, PGC 000564, Holm 2A, GC 1.[1]

NGC 1 is a spiral galaxy SbbPa Ring located 210 million light-years away in the constellation Pegasus. It was discovered 30 September 1861 by Heinrich d'Arrest, who described it as "faint, small, round, between 11th and 14th magnitude stars" (to the north and south).[3]

At about 140,000 light-years in diameter, NGC 1 is nearly the same size as our own galaxy, the Milky Way, but with an absolute magnitude of -22.08, NGC 1 is 2 to 3 times more luminous than it. Although the central galaxy is only about 90,000 light-years across, a large, diffuse arm extends eastwards from it, possibly from a past merger. The galaxy is 4.0 Mly away from the 80,000 light-year galaxy UGC 69, its nearest major neighbor. Although it is apparently quite close to NGC 2, NGC 2 is actually much further away, and unrelated to NGC 1.

It is the first object listed in the New General Catalogue.[1] In the coordinates used at the time of the catalog's compilation (epoch 1860), this object had the lowest right ascension of all the objects in the catalog, making it the first object to be listed when the objects were arranged by right ascension.[4] Since then, the coordinates have shifted, and this object no longer has the lowest right ascension of all the NGC objects.[5]

See also

References

  1. 1 2 3 4 5 6 7 8 9 10 11 "NASA/IPAC Extragalactic Database". Results for NGC 0001. Retrieved 2006-11-04.
  2. ↑ "Distance Results for NGC 0001". NASA/IPAC Extragalactic Database. Retrieved 2010-05-03.
  3. ↑ "NGC 1 (=PGC 564)". New General Catalog Objects. Retrieved 4 January 2016.
  4. ↑ Dreyer, J. L. E., "New General Catalogue of Nebulae and Clusters of stars (1888)", Memoirs of the Royal Astronomical Society, 49. p3, Royal Astronomical Society, 1962.
  5. ↑ Erdmann, R.E., Jr., The Historically Corrected New General Catalogue of Nebulæ and Clusters of Stars, p12, retrieved and archived 13 June 2008.
Wikimedia Commons has media related to NGC 1.

Coordinates: 00h 07m 15.86s, 27° 42′ 29.7″

This article is issued from Wikipedia - version of the 11/15/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.