Astronomical data · SIMBAD
- Object type
- SyG
- Redshift
- z = 0.004087844049233791
- Morphology
- SA
- Coordinates
- RA 153.5627° · Dec 3.4661°
via SIMBAD · CDS Strasbourg
Key facts
- Constellation
- Sextans
- Right ascension
- 10 14 15.099
- Declination
- +03 ° 27 ′ 58.03 ″
- Redshift
- +0.004113 ± 0.000017
- Heliocentric radial velocity
- +1,232 km/s
- Distance
- 57 Mly (17.43 Mpc )
- Type
- SA(s)a pec
- Apparent size v
- 4.2′ × 2.9′
via Wikipedia infobox
~2 min read
Encyclopedic overview
NGC 3169 is a spiral galaxy about 75 million light years away in the constellation Sextans. It has the morphological classification SA(s)a pec, which indicates this is a pure, unbarred spiral galaxy with tightly-wound arms and peculiar features. There is an asymmetrical spiral arm and an extended halo around the galaxy. It is a member of the NGC 3166 Group of galaxies, which is a member of the Leo II Groups, a series of galaxies and galaxy clusters strung out from the right edge of the Virgo Supercluster.
This is a LINER 2 galaxy that displays an extended emission of X-rays in the region of the nucleus. A hard X-ray source at the center most likely indicates an active galactic nucleus. The stellar population in the nucleus, and a ring at an angular radius of 6″, shows an age of only one billion years and is generally younger than the surrounding stellar population. This suggests that a burst of star formation took place in the nucleus roughly one billion years ago.
Excerpted from Wikipedia’s “Q917922” article, available under the CC BY-SA 4.0 licence.