PGC 84720

from Wikipedia, the free encyclopedia
Galaxy
LEDA / PGC 84720
{{{Card text}}}
NGC 6045 with LEDA 84720, NGC 6043 with LEDA 1541265 (ro), NGC 6047 (u) & LEDA 1540505 (ru) [1] (SDSS mount)
NGC 6045 with LEDA 84720, NGC 6043 with LEDA 1541265 (ro), NGC 6047 (u) & LEDA 1540505 (ru) ( SDSS image)
AladinLite
Constellation Hercules
Position
equinox :  J2000.0 , epoch : J2000.0
Right ascension 16 h 05 m 10.3 s
declination + 17 ° 45 ′ 30 ″
Appearance
Morphological type S0  
Brightness  (visual) 15.5 mag
Brightness  (B-band) 16.5 mag
Angular expansion 0.40 ′ × 0.2 ′
Position angle 160 °
Surface brightness 12.6 mag / arcmin²
Physical data
Affiliation Abell 2151  
Redshift 0.031184 ± 0.000163  
Radial velocity 9349 ± 49 km / s  
Stroke distance
v rad  / H 0 		(422 ± 30)  ·  10 6  ly
(129.4 ± 9.1)  Mpc 
history
Catalog names
NGC  6045B  • PGC  84720 • 2MASX  J16051033 + 1745298 • 2MASS J16051033 + 1745303 • SDSS J160510.33 + 174530.4 • ASK 562745.0 • NSA 99059

LEDA / PGC 84720 (also NGC 6045B ) is a lens-shaped galaxy of the Hubble type S0 in the constellation Hercules in the northern sky . It is an estimated 422 million light years away from the Milky Way and is around 50,000 light years in diameter. The galaxy is considered a member of the Hercules galaxy cluster Abell 2151 . Together with NGC 6045 , it forms the galaxy pair Arp 71 .

Halton Arp organized his catalog of unusual galaxies into groups according to purely morphological criteria. This galaxy belongs to the class spiral galaxies with a small companion of high surface brightness on one arm (Arp catalog) .

In the same area of ​​the sky are u. a. the galaxies NGC 6043 , NGC 6047 , NGC 6050 , IC 1179 .

Web links

Individual evidence

  1. ^ Aladin Lite
  2. ↑ a b c d e NASA / IPAC EXTRAGALACTIC DATABASE
  3. ↑ a b c d e SEDS : PGC 84720