NGC 6028

NGC 6028 is a barred[3] lenticular galaxy[4] and a ring galaxy[3] located about 200 million light-years away[4] in the constellation Hercules.[5] Ring galaxies such as NGC 6028 are also known as Hoag-type galaxies as they may have a resemblance to the prototype, Hoag's Object.[3] NGC 6028 was discovered by astronomer William Herschel on March 14, 1784. It was then rediscovered by astronomer Guillaume Bigourdan on May 4, 1886.[6]

NGC 6028
NGC 6028 (SDSS DR14)
Observation data (J2000 epoch)
ConstellationHercules
Right ascension16h 01m 28.9s[1]
Declination19° 21′ 36″[1]
Redshift0.014927[1]
Heliocentric radial velocity4475 km/s[1]
Distance62.3 Mpc (203 Mly)[2]
Apparent magnitude (V)14.35[1]
Characteristics
Type(R)SA0+?[1]
Size~110,000 ly (35 kpc) (estimated)[1]
Apparent size (V)1.3 x 1.2[1]
Notable featuresStructure similar to that of Hoag's Object
Other designations
NGC 6046, 1ZW 133, CGCG 108-63, MCG 3-41-43, PGC 56716, PRC C-49, UGC 10135[1]

Physical characteristics

NGC 6028 consists of a luminous core that is surrounded by a fainter outer ring. Unlike Hoag's Object, NGC 6028's core is elongated indicating the presence of a weak bar embedded in a lens-like structure. The outer ring of the galaxy appears asymmetric in structure and may be made up of tightly wound spiral arms. The observed asymmetry could be the result of one arm being richer in H II regions than the other arm.[3]

Group membership

NGC 6028 appears to lie near the Hercules cluster in the sky. However, NGC 6028 is not a member of that cluster but instead belongs to a foreground group of galaxies known as G47.[3]

See also

References
  1. "NASA/IPAC Extragalactic Database". Results for NGC 6028. Retrieved 2017-12-30.
  2. "parsecs to lightyears conversion". Retrieved 2017-09-30.
  3. Wakamatsu, Ken-Ichi (January 1990). "On the nature of Hoag-type galaxy NGC 6028 and related objects". The Astrophysical Journal. 348: 448–455. Bibcode:1990ApJ...348..448W. doi:10.1086/168253. ISSN 0004-637X.
  4. "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2018-01-01.
  5. "Revised NGC Data for NGC 6028". spider.seds.org. Retrieved 2018-01-01.
  6. "New General Catalog Objects: NGC 6000 - 6049". cseligman.com. Retrieved 2018-01-01.


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