NGC 1169

NGC 1169 (UGC 2503) is an intermediate barred spiral galaxy in the constellation of Perseus. NGC 1169 has a reddish center, indicating the region is dominated by older stars. In contrast, the outer ring contains larger blue-white stars, a sign of recent star formation.[1][5] The entire galaxy is rotating at approximately 265 km/s [4]

NGC 1169
Image of NGC 1169 taken by Adam Block
Observation data (J2000 epoch)
ConstellationPerseus[1]
Right ascension03h 03m 34.756s [2]
Declination+46° 23′ 10.74″ [2]
Redshift0.007962 ± 0.000017 [3]
Helio radial velocity2387 ± 5 km/s [3]
Galactocentric velocity2508 ± 5 km/s [3]
Distance (comoving)35.1 ± 8.4 kpc (114 ± 27 kly)h−1
0.73 [3]
Apparent magnitude (V)9.02 [3]
Apparent magnitude (B)13.2 [2]
Absolute magnitude (V)-23.6 [3]
Characteristics
TypeSAB(r)b [3]
Mass4.5×1011 [4] M☉
Mass/Light ratio10 [4] M☉/L☉
Size120,000 × 84,000 ly [3]
Apparent size (V)4.2 × 2.8 arcmin [3]
Other designations
NGC 1169, UGC 2503, PGC 11521

NGC 1169 was discovered on December 11, 1786 by William Herschel.[6] Measurements of its distance range from 20.9 Mpc - 49.7 Mpc with an average of 35.1 Mpc.[3] and exhibits a slight ring structure.

References
  1. "Astronomy Photo of the Day: 1/03/15 — NGC 1169". futurism.com. Retrieved 2015-12-01.
  2. "SIMBAD Astronomical Database". Results for NGC 1169. Retrieved 2015-11-30.
  3. "NASA/IPAC Extragalactic Database". Results for NGC 1169. Archived from the original on 1997-12-22. Retrieved 2015-11-30.
  4. van Driel, W.; van Woerden, H. (1994). "Distribution and motions of HI in the Sa galaxies NGC 1169 and NGC 3898". Astronomy and Astrophysics. 284: 395–407. Bibcode:1994A&A...286..395V.
  5. Plait, Phil (January 2015). "The Beauty of a Grain of Sand on the Cosmic Beach". slate.com. Retrieved 2015-12-01.
  6. "New General Catalog Objects: NGC 1150 - 1199". cseligman.com. Retrieved 2015-12-01.


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