Astronomy:NGC 2217

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Short description: Galaxy in the constellation Canis Major
NGC 2217
NGC 2217 ESO.jpg
Credit:ESO
Observation data (J2000 epoch)
ConstellationCanis Major
Right ascension 06h 21m 40.35s[1]
Declination−27° 13′ 56.90″[1]
Redshift0.005400[2]
Helio radial velocity1619 km/s[2]
Distance73 Mly 22.4 Mpc[2]
Apparent magnitude (V)11.71[2]
Characteristics
Type(R)SB0+(rs)[2]
Apparent size (V)4.44 × 4.84 [1]
Other designations
MCG-05-15-010, PGC 18883[2]

NGC 2217 is a nearly face-on lenticular galaxy of about 100 thousand light-years across that lies roughly 65 million light years from Earth in the constellation of Canis Major. It is part of the NGC 2217 Group of galaxies. It is classified as a barred spiral galaxy.

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.

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.[1]

One supernova, SN 2017fzw (type Ia, mag. 17.1), was discovered in NGC 2217 on 9 August, 2017.[3]

References

https://stardate.org/radio/program/2022-02-06

External links

Coordinates: Sky map 06h 21m 40.35s, −27° 13′ 56.90″