NGC 4440 explained

NGC 4440
Epoch:	J2000
Type:	SB(rs)a^[1]
Dist Ly:	56,400,000 ly^[2]
Group Cluster:	Virgo Cluster
Z:	0.002415/724 km/s
Appmag V:	12.70
Size V:	1.9 x 1.5
Constellation Name:	Virgo
Names:	PGC 40927, UGC 7581, VCC 1047
Size:	~30,550 ly (estimated)

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

• List of NGC objects (4001–5000)

Notes and References

1. Web site: NASA/IPAC Extragalactic Database . Results for NGC 4440 . 2017-09-30.
2. Web site: parsecs to lightyears conversion. 2017-09-30.
3. Web site: Your NED Search Results. ned.ipac.caltech.edu. 2017-09-30.
4. Web site: Galaxy NGC 4440 - Barred Spiral Galaxy in Virgo Constellation · Deep Sky Objects Browser. Rojas. Sebastián García. DSO Browser. en. 2017-09-30. 2017-10-01. https://web.archive.org/web/20171001074310/https://dso-browser.com/deep-sky/5486/ngc-4440/galaxy. dead.
5. Web site: New General Catalog Objects: NGC 4400 - 4449. cseligman.com. en-US. 2017-09-30.
6. Web site: Detailed Object Classifications. ned.ipac.caltech.edu. 2017-09-30.
7. Web site: NGC 4440 - SB(rs)a. The De Vaucouleurs Atlas of Galaxies. 2017-09-30. 2019-03-02. https://web.archive.org/web/20190302232131/http://kudzu.astr.ua.edu/devatlas/NGC_4440______g___________.html. dead.