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IC 21

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IC 21
Observation data
ConstellationCetus
Redshift0.060818
Helio radial velocity18233 km/s
Distance822 Mly
Characteristics
TypeSBbc
Size120,000 ly (estimated)
Other designations
PGC 1785, MCG+00-02-053, LEDA 1785, 2MASX J00291043-0009490
See also: Galaxy, List of galaxies

IC 21 known as PGC 1785, is a distant barred spiral galaxy located in the Cetus constellation.[1] It is located 822 million light-years away and has an estimated diameter of 120,000 thousand light-years.[2] IC 21 was first found by Stephane Javelle, who was a French astronomer on November 7th in 1891.[3] The galaxy is apparently located near towards a dwarf galaxy, PGC 3112047.[3] According to SIMBAD database, IC 21 is both a Seyfert type 2 and radio galaxy, suggesting an active galactic nucleus.[4]

References[edit]

  1. "IC 21 - Barred Spiral Galaxy in Cetus | TheSkyLive.com". theskylive.com. Retrieved 2024-04-17.
  2. "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2024-04-17.
  3. 3.0 3.1 "Index Catalog Objects: IC 1 - 49". cseligman.com. Retrieved 2024-04-17.
  4. "IC 21". simbad.u-strasbg.fr. Retrieved 2024-04-17.


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