NGC 584

from Wikipedia, the free encyclopedia
Galaxy
NGC 584
{{{Card text}}}
NGC 584 [1] SDSS image
NGC 584 SDSS image
AladinLite
Constellation whale
Position
equinoxJ2000.0 , epoch : J2000.0
Right ascension 01 h 31 m 20.75 s
declination -06 ° 52 ′ 05.0 ″
Appearance
Morphological type E4  
Brightness  (visual) 10.5 mag
Brightness  (B-band) 11.5 likes
Angular expansion 4.1 ′ × 2 ′
Position angle 72 °
Surface brightness 12.9 mag / arcmin²
Physical data
Affiliation NGC 584 group
LGG 27  
Redshift 0.006011 ± 0.000011  
Radial velocity 1802 ± 3 km / s  
Stroke distance
v rad  / H 0
(82 ± 6)  ·  10 6  ly
(25.2 ± 1.8)  Mpc 
history
discovery Wilhelm Herschel
Discovery date September 10, 1785
Catalog names
NGC  584 • IC  1712 • PGC  5663 • MCG  -01-04-060 • 2MASX  J01312075-0652050 • GC  342 • H  I 100 • h  128 • WISEA J013120.73-065204.6 • HOLM 45B • LDCE 95 NED003

NGC 584 = IC 1712 is an elliptical galaxy of the Hubble type E4 in the constellation Whale south of the ecliptic . It is estimated to be 82 million light-years from the Milky Way and about 40,000 light-years across. Together with NGC 586 , it forms the gravitationally bound galaxy pair Holm 45 and is the brightest member of the NGC 584 group ( LGG 27 ).

The object was discovered on September 10, 1785 by the German-British astronomer Wilhelm Herschel .

NGC 584 group ( LGG 27 )

Galaxy Alternative name Distance / million Lj
NGC 584 PGC 5663 82
NGC 586 PGC 5679 85
NGC 596 PGC 5766 85
NGC 600 PGC 5777 84
NGC 615 PGC 5897 84
NGC 636 PGC 6110 84
PGC 5341 MCG-01-04-044 89
PGC 6190 MCG-01-05-014 97

Web links

Commons : NGC 584  - collection of images, videos, and audio files

Individual evidence

  1. ^ Aladin Lite
  2. a b c d e f NASA / IPAC EXTRAGALACTIC DATABASE
  3. a b c d e f SEDS : NGC 584
  4. ^ VizieR
  5. Seligman