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NGC 1998

Summary

NGC 1998 (also known as ESO 204-15, PGC 17434) is a lenticular galaxy located in the Pictor constellation. It was discovered by John Herschel on December 28, 1834[4] and is about 207 million light-years from the Milky Way. Its apparent magnitude is 14.3.[3] and its size is 0.90 by 0.5 arc minutes.[3] In some sources such as SIMBAD, it is misidentified as nearby double star NGC 1995.[2]

NGC 1998
NGC 1998, top-right from it is NGC 1995
Observation data (J2000.0 epoch)
ConstellationPictor
Right ascension05h 33m 15.7s[1]
Declination−48° 41′ 44″[1]
Redshift0.015137[2]
Heliocentric radial velocity4538[2]
Distance207 million
Apparent magnitude (V)14.3[3]
Apparent magnitude (B)15.2[3]
Characteristics
TypeSO
Size0.90 x 0.5 arc minutes[3]
Other designations
ESO 204-15, PGC 17434

References edit

  1. ^ a b "NED results for object NGC 1998". NED. Retrieved 11 November 2017.
  2. ^ a b c "NGC 1995". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 11 November 2017.
  3. ^ a b c d e "Object: NGC 1998 (*)". SEDS. Retrieved 11 November 2017.
  4. ^ "Galaxy NGC 1998". cseligman. Retrieved 11 November 2017.