NGC 4440

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)
ConstellationVirgo
Right ascension12h 27m 53.6s[1]
Declination12° 17′ 36″[1]
Redshift0.002415/724 km/s[1]
Distance56,400,000 ly[2]
Group or clusterVirgo Cluster
Apparent magnitude (V)12.70[1]
Characteristics
TypeSB(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

NGC 4440 has a strong bar in its structure. Surrounding the bar, there are two very open spiral arms.[7]

See also

References
  1. "NASA/IPAC Extragalactic Database". Results for NGC 4440. Retrieved 2017-09-30.
  2. "parsecs to lightyears conversion". Retrieved 2017-09-30.
  3. "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2017-09-30.
  4. Rojas, Sebastián García. "Galaxy NGC 4440 - Barred Spiral Galaxy in Virgo Constellation · Deep Sky Objects Browser". DSO Browser. Retrieved 2017-09-30.
  5. "New General Catalog Objects: NGC 4400 - 4449". cseligman.com. Retrieved 2017-09-30.
  6. "Detailed Object Classifications". ned.ipac.caltech.edu. Retrieved 2017-09-30.
  7. "NGC 4440 - SB(rs)a". The De Vaucouleurs Atlas of Galaxies. Retrieved 2017-09-30.


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