NGC 3169

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Galaxy
NGC 3169
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HST image of NGC 3169
HST image of NGC 3169
AladinLite
Constellation sextant
Position
equinox :  J2000.0 , epoch : J2000.0
Right ascension 10 h 14 m 15.0502 s
declination + 03 ° 27 ′ 57.875 ″
Appearance
Morphological type SA (s) a / HII / LINER  
Brightness  (visual) 10.3 mag
Brightness  (B-band) 11.2 mag
Angular expansion 4.2 ′ × 2.9 ′
Position angle 45 °
Surface brightness 12.9 mag / arcmin²
Physical data
Affiliation NGC 3166 group
LGG 192  
Redshift 0.004130 ± 0.000013  
Radial velocity 1238 ± 4 km / s  
Stroke distance
v rad  / H 0 		(49 ± 4)  ·  10 6  ly
(15.1 ± 1.1)  Mpc 
history
discovery Wilhelm Herschel
Discovery date December 19, 1783
Catalog names
NGC  3169 • UGC  5525 • PGC  29855 • CGCG  036-066 • MCG  + 01-26-26 • IRAS  10116 + 0342 • 2MASX  J10141509 + 0327580 • GC  2041 • H  I 4 • h  685 • HIPASS J1014 + 03 • LDCE 715 NED003 • NVSS J101415 + 032757 • WISEA J101415.05 + 032757.8 • HOLM 173B • KPG 228B

NGC 3169 is a spiral galaxy with an active nucleus of the Hubble type Sa with extensive star formation regions in the constellation Sextant south of the ecliptic . It is estimated to be 49 million light years from the Milky Way and about 70,000 light years in diameter. Together with NGC 3165 and NGC 3166 it forms the gravitationally bound galaxy trio Holm 173 or KPG 228 and is the brightest galaxy of the NGC 3169 group ( LGG 192 ).
The galaxies NGC 3156 and NGC 3165 are located in the same area of ​​the sky .

The supernovae SN 1984E (Type IIL) and SN 2003cg ( Type Ia ) were observed here.

The object was discovered by Wilhelm Herschel on December 19, 1783 .

NGC 3169 group ( LGG 192 )

Galaxy Alternative name Distance / million ly
NGC 3156 PGC 29730 53
NGC 3165 PGC 29798 54
NGC 3166 PGC 29814 54
NGC 3169 PGC 29855 49
PGC 29969 UGC 5539 51

Web links

Individual evidence

  1. ↑ a b c d e NASA / IPAC EXTRAGALACTIC DATABASE
  2. ↑ a b c d e f SEDS : NGC 3169
  3. ^ VizieR
  4. ↑ Simbad
  5. ↑ Seligman