Astronomy:NGC 4440
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Short description: Galaxy in the constellation Virgo
| 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] | |
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]
Physical characteristics
NGC 4440 has a strong bar in its structure. Surrounding the bar, there are two very open spiral arms.[7]
See also
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 "NASA/IPAC Extragalactic Database". Results for NGC 4440. http://nedwww.ipac.caltech.edu/.
- ↑ "parsecs to lightyears conversion". http://www.unitconversion.org/length/parsecs-to-light-years-conversion.html.
- ↑ "Your NED Search Results". https://ned.ipac.caltech.edu/cgi-bin/objsearch?objname=NGC+4440&extend=no&hconst=73&omegam=0.27&omegav=0.73&corr_z=1&out_csys=Equatorial&out_equinox=J2000.0&obj_sort=RA+or+Longitude&of=pre_text&zv_breaker=30000.0&list_limit=5&img_stamp=YES.
- ↑ Rojas, Sebastián García. "Galaxy NGC 4440 - Barred Spiral Galaxy in Virgo Constellation · Deep Sky Objects Browser" (in en). https://dso-browser.com/deep-sky/5486/ngc-4440/galaxy.
- ↑ "New General Catalog Objects: NGC 4400 - 4449" (in en-US). http://cseligman.com/text/atlas/ngc44.htm#4440.
- ↑ "Detailed Object Classifications". https://ned.ipac.caltech.edu/cgi-bin/NEDatt?objname=NGC+4440.
- ↑ "NGC 4440 - SB(rs)a". http://kudzu.astr.ua.edu/devatlas/NGC_4440______g___________.html.
External links
- NGC 4440 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
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