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NGC 998

From Wikipedia, the free encyclopedia
Galaxy in the constellation Cetus
NGC 998
SDSS image of NGC 998
Observation data (J2000epoch)
ConstellationCetus
Right ascension02h 37m 16.50891s[1]
Declination+07° 20′ 08.7169″[1]
Redshift0.02184[2]
Heliocentric radial velocity6476 km/s[2]
Distance303.7 ± 21.4 Mly (93.11 ± 6.56 Mpc)[3]
Apparent magnitude (B)14.6[2]
Absolute magnitude (V)-23.46 +/- 0.51[2]
Characteristics
TypeS?[2]
Other designations
MCG +01-07-015,PGC 9934[2]

NGC 998 is aspiral galaxy in theconstellation Cetus. It is estimated to be 294 millionlight years from theMilky Way and has adiameter of approximately 90,000 ly. Together with NGC 997, it forms agravitationally bound pair of galaxies. NGC 998 was discovered byastronomerAlbert Marth on 10 November 1863 using a 48-inch telescope.[4][5][6]

See also

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References

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  1. ^abBrown, A. G. A.; et al. (Gaia collaboration) (August 2018)."Gaia Data Release 2: Summary of the contents and survey properties".Astronomy & Astrophysics.616. A1.arXiv:1804.09365.Bibcode:2018A&A...616A...1G.doi:10.1051/0004-6361/201833051.
  2. ^abcdef"NGC 998".SIMBAD.Centre de données astronomiques de Strasbourg. Retrieved2020-06-03.
  3. ^"Results for object NGC 0998 (NGC 998)".NASA/IPAC Extragalactic Database. California Institute of Technology. Retrieved2020-06-03.
  4. ^"Revised NGC Data for NGC 998".spider.seds.org. Retrieved2020-03-24.
  5. ^"Your NED Search Results".ned.ipac.caltech.edu. Retrieved2020-03-24.
  6. ^Ford, Dominic."The galaxy NGC 998 - In-The-Sky.org".in-the-sky.org. Retrieved2020-03-24.

External links

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  • Media related toNGC 998 at Wikimedia Commons
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