Astronomy:NGC 4440

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Short description: Galaxy in the constellation Virgo
NGC 4440
SDSS NGC 4440.jpg
SDSS image of NGC 4440
Observation data (J2000 epoch)
ConstellationVirgo
Right ascension 12h 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]

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. ↑ 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/. 
  2. ↑ "parsecs to lightyears conversion". http://www.unitconversion.org/length/parsecs-to-light-years-conversion.html. 
  3. ↑ "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. 
  4. ↑ 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. 
  5. ↑ "New General Catalog Objects: NGC 4400 - 4449" (in en-US). http://cseligman.com/text/atlas/ngc44.htm#4440. 
  6. ↑ "Detailed Object Classifications". https://ned.ipac.caltech.edu/cgi-bin/NEDatt?objname=NGC+4440. 
  7. ↑ "NGC 4440 - SB(rs)a". http://kudzu.astr.ua.edu/devatlas/NGC_4440______g___________.html. 

External links



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