NGC 4973

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Galaxy
NGC 4973 / IC 847
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NGC 4973 with LEDA 2448877 (o) & LEDA 2448354 (ro) [1] SDSS image
NGC 4973 with LEDA 2448877 (o) & LEDA 2448354 (ro) SDSS image
AladinLite
Constellation Big Bear
Position
equinoxJ2000.0 , epoch : J2000.0
Right ascension 13 h 05 m 32.154 s
declination + 53 ° 41 ′ 06.54 ″
Appearance
Morphological type E / S0  
Brightness  (visual) 13.9 likes
Brightness  (B-band) 14.9 mag
Angular expansion 0.7 ′ × 0.7 ′
Surface brightness 13.2 mag / arcmin²
Physical data
Affiliation WBL 430  
Redshift 0.029737 ± 0.000063  
Radial velocity 8915 ± 19 km / s  
Stroke distance
v rad  / H 0
(402 ± 28)  x  10 6  ly
(123.4 ± 8.6)  Mpc 
history
discovery Wilhelm Herschel
Discovery date April 14, 1789
Catalog names
NGC  4973 • IC  847 • PGC  45280 • CGCG  270-049 • CGCG 271-005 • MCG  + 09-22-006 • 2MASX  J13053216 + 5341069 • GC  3410 • H  III 781 • GALEX ASC J130532.06 + 534106.2 • LDCE 942 NED001 • NSA 42751 • WISEA J130532.17 + 534106.6

NGC 4973 = IC 847 is a 13.9 mag bright elliptical galaxy of the Hubble type E0 in the constellation Great Bear in the northern sky . It is estimated to be 402 million light years from the Milky Way and about 80,000 light years in diameter .
The galaxies NGC 4967 and NGC 4974 are located in the same area of ​​the sky .

Together with NGC 4967 and NGC 4974 , they were discovered as the brightest members of a small group of six or seven galaxies in a single observation on April 14, 1789 by Wilhelm Herschel with an 18.7-inch reflector telescope, the “Two nebulae [NGC 4973 & NGC 4974] Both vF, S. Place is that of second, the other is 3 'or 4' Sp "noted.

Web links

Individual evidence

  1. ^ Aladin Lite
  2. a b c d e NASA / IPAC EXTRAGALACTIC DATABASE
  3. a b c d e SEDS : NGC 4973
  4. Seligman
  5. Auke Slotegraaf : NGC 4973. Deep Sky Observer's Companion, accessed on February 23, 2015 (English).