NGC 4440 is a barred spiral galaxy located about 55 million light-years away[3] in the constellation of Virgo.[4] NGC 4440 was discovered by astronomer William Herschel on April 17, 1784.[5] It is a member of the Virgo Cluster.[6]
| NGC 4440 | |
|---|---|
 SDSS image of NGC 4440 | |
| Observation data (J2000 epoch) | |
| Constellation | Virgo |
| Right ascension | 12h 27m 53.6s[1] |
| Declination | 12° 17′ 36″[1] |
| Redshift | 0.002415/724 km/s[1] |
| Distance | 56,400,000 ly[2] |
| Group or cluster | Virgo Cluster |
| Apparent magnitude (V) | 12.70[1] |
| Characteristics | |
| Type | SB(rs)a[1] |
| Size | ~30,550 ly (estimated)[1] |
| Apparent size (V) | 1.9 x 1.5[1] |
| Other designations | |
| PGC 40927, UGC 7581, VCC 1047 [1] | |
Physical characteristics
editNGC 4440 has a strong bar in its structure. Surrounding the bar, there are two very open spiral arms.[7]
See also
editReferences
edit- ^ a b c d e f g h "NASA/IPAC Extragalactic Database". Results for NGC 4440. Retrieved 2017-09-30.
- ^ "parsecs to lightyears conversion". Retrieved 2017-09-30.
- ^ "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2017-09-30.
- ^ Rojas, Sebastián García. "Galaxy NGC 4440 - Barred Spiral Galaxy in Virgo Constellation · Deep Sky Objects Browser". DSO Browser. Archived from the original on 2017-10-01. Retrieved 2017-09-30.
- ^ "New General Catalog Objects: NGC 4400 - 4449". cseligman.com. Retrieved 2017-09-30.
- ^ "Detailed Object Classifications". ned.ipac.caltech.edu. Retrieved 2017-09-30.
- ^ "NGC 4440 - SB(rs)a". The De Vaucouleurs Atlas of Galaxies. Archived from the original on 2019-03-02. Retrieved 2017-09-30.
External links
edit
Wikimedia Commons has media related to NGC 4440.
- NGC 4440 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images