NGC 584
Galaxy NGC 584 |
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NGC 584 SDSS image | |
AladinLite | |
Constellation | whale |
Position equinox : J2000.0 , epoch : J2000.0 |
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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
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