NGC 2217

NGC 2217
Credit:ESO
Observation data (J2000 epoch)
ConstellationCanis Major
Right ascension06h 21m 40.35s
Declination−27° 13′ 56.90″
Redshift0.005400
Heliocentric radial velocity1619 km/s
Distance73 Mly 22.4 Mpc
Apparent magnitude (V)11.71
Characteristics
Type(R)SB0+(rs)
Apparent size (V)4.44 ′ × 4.84 ′
Other designations
MCG -05-15-010, PGC 18883

NGC 2217 is a barred spiral galaxy of about 100 thousand light-years across that lies roughly 65 million light years from Earth in the constellation of Canis Major. It was discovered by British astronomer John Herschel on 20 January 1835.

It is part of the NGC 2217 Group or LGG 136. It has at least 3 members, NGC 2217, ESO 489-29 and ESO 426-1.

A notable feature is the swirling shape of this galaxy. In its very concentrated central region we can see a distinctive, very luminous bar of stars within an oval ring. Further out, a set of tightly wound spiral arms almost form a circular ring around the galaxy. The galaxy is not very known as of now.

Central bars play an important role in the development of a galaxy. They can, for example, funnel gas towards the center of the galaxy, helping to feed a central black hole, or to form new stars.

Supernova

One supernova has been observed in NGC 2217:

References

  1. 1 2 3 4 http://www.eso.org/public/images/potw1204a/ "ESO"
  2. 1 2 3 4 5 6 "NASA/IPAC Extragalactic Database". Results for NGC 2217. Retrieved December 26, 2016.
  3. ↑ Seligman, Courtney. "New General Catalogue Objects: NGC 2217". Celestial Atlas. Retrieved 5 October 2026.
  4. ↑ Garcia, A. M. (1993). "General study of group membership. II. Determination of nearby groups". Astronomy & Astrophysics Supplement Series. 100: 47–90. Bibcode:1993A&AS..100...47G.
  5. ↑ "SN 2017fzw". Transient Name Server. IAU. Retrieved 7 October 2026.

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