|Observation data (J2000 epoch)|
|Right ascension||12h 30m 36.2s|
|Declination||41° 38′ 38″|
|Redshift||565 ± 3 km/s|
|Distance||25.1 ± 5.0 Mly (7.7 ± 1.5 Mpc)|
|Apparent magnitude (V)||9.8|
|Type||SB(s)d pec |
|Apparent size (V)||6′.3 × 3′.1|
|Arp 269, UGC 7651, PGC 41333|
NGC 4490, also known as the Cocoon Galaxy, is a barred spiral galaxy in the constellation Canes Venatici. It lies at a distance of 25 million light years from Earth. It interacts with its smaller companion NGC 4485 and as a result is a starburst galaxy. NGC 4490 and NGC 4485 are collectively known in the Atlas of Peculiar Galaxies as Arp 269. NGC 4490 is located 3/4° northwest of beta Canum Venaticorum and with apparent visual magnitude 9.8, can be observed with 15x100 binoculars. It is a member of Herschel 400 Catalogue. It belongs in Canes Venatici galaxy cloud II.
Extreme tidal forces have carved out the shapes and properties of NGC 4490.
- "NASA/IPAC Extragalactic Database". Results for NGC 4490. Retrieved 2016-01-18.
- Craig Crossen, Gerald Rhemann (2012). Sky Vistas: Astronomy for Binoculars and Richest-Field Telescopes. Springer Science+Business Media. p. 233. ISBN 978-3-7091-0626-6.
- List of Supernovae IAU Central Bureau for Astronomical Telegrams. Retrieved 29 December 2015.
- "Bursting with Starbirth". www.spacetelescope.org. Retrieved 28 September 2017.
|Wikimedia Commons has media related to NGC 4490.|
- NGC 4490 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
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