NGC 4340

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Galaxy
NGC 4340
{{{Card text}}}
SDSS image from NGC 4350 & NGC 4340 & LEDA 213984 (r) [1]
SDSS image of NGC 4350 & NGC 4340 & LEDA 213984 (r)
AladinLite
Constellation Berenike's hair
Position
equinox :  J2000.0 , epoch : J2000.0
Right ascension 12 h 23 m 35.3 s
declination + 16 ° 43 ′ 20 ″
Appearance
Morphological type SB (r) 0+  
Brightness  (visual) 11.2 mag
Brightness  (B-band) 12.1 mag
Angular expansion 3 ′ × 2 ′
Position angle 102 °
Surface brightness 13.0 mag / arcmin²
Physical data
Affiliation Virgo cluster
NGC 4343 group
Messier 49 group
LGG 292  
Redshift 0.003112 ± 0.000017  
Radial velocity 933 ± 5 km / s  
Stroke distance
v rad  / H 0 		(40 ± 3)  x  10 6  ly
(12.2 ± 0.9)  Mpc 
diameter 55,000 ly
history
discovery William Herschel
Discovery date March 21, 1784
Catalog names
NGC  4340 • UGC  7467 • PGC  40245 • CGCG  099-036 • MCG  + 03-32-021 • 2MASX  J12233531 + 1643199 • VCC  654 • GC  2891 • H  II 85 • h  1212 • GALEX ASC J122335.37 + 164321.0 • LDCE 904 NED079 • HOLM 391B • EVCC 2089

NGC 4340 , is a lenticular galaxy of the Hubble type SB0 / a in the constellation Haar der Berenike in the northern sky . It is estimated to be 40 million light years from the Milky Way and about 35,000 light years in diameter . Together with NGC 4350 , it forms the gravitationally bound galaxy pair Holm 391 . Cataloged under catalog number VCC 654 as a member of the Virgo Galaxy Cluster.
The galaxies NGC 4383 , IC 787 , IC 3298 , IC 3340 are located in the same area of ​​the sky .

The supernova SN 1977A, which reached a visual magnitude of 16.2 mag, was observed here.

The object was discovered on March 21, 1784 by the astronomer William Herschel with the help of his 18.7-inch mirror telescope.

Web links

Commons : NGC 4340  - collection of images, videos, and audio files

Individual evidence

  1. ^ Aladin Lite
  2. ↑ a b c d e NASA / IPAC EXTRAGALACTIC DATABASE
  3. ↑ a b c d e f SEDS : NGC 4340
  4. ^ VizieR
  5. ↑ Simbad
  6. ↑ R. Barbon, V. Buondi, E. Cappellaro, M. Turatto: The Asiago Supernova Catalog - 10 years after . In: Astronomy and Astrophysics Supplement Series . tape 139 , no. 3 , November 1999, ISSN  0365-0138 , p. 531-536 , doi : 10.1051 / aas: 1999404 ( aanda.org [accessed April 30, 2020]).
  7. ↑ Seligman