NGC 1169
| NGC 1169 | |
|---|---|
|
Image of NGC 1169 taken by Adam Block | |
| Observation data (J2000 epoch) | |
| Right ascension | 03h 03m 34.756s [1] |
| Declination | +46° 23′ 10.74″ [1] |
| Redshift | 0.007962 ± 0.000017 [2] |
| Helio radial velocity | 2387 ± 5 km/s [2] |
| Galactocentric velocity | 2508 ± 5 km/s [2] |
| Distance (comoving) |
35.1 ± 8.4 kpc (114 ± 27 kly)h−1 0.73 [2] |
| Apparent magnitude (V) | 9.02 [2] |
| Apparent magnitude (B) | 13.2 [1] |
| Absolute magnitude (V) | -23.6 [2] |
| Characteristics | |
| Type | SAB(r)b [2] |
| Mass | 4.5×1011 [3] M☉ |
| Mass/Light ratio | 10 [3] M☉/L☉ |
| Size | 120,000 × 84,000 ly [2] |
| Apparent size (V) | 4.2 × 2.8 arcmin [2] |
| Other designations | |
| NGC 1169, UGC 2503, LEDA 11521 | |
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.[4][5] The entire galaxy is rotating at approximately 265 km/s [3]
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.[2] and exhibits a slight ring structure.
References
- 1 2 3 "SIMBAD Astronomical Database". Results for NGC 1169. Retrieved 2015-11-30.
- 1 2 3 4 5 6 7 8 9 10 "NASA/IPAC Extragalactic Database". Results for NGC 1169. Retrieved 2015-11-30.
- 1 2 3 van Driel, W.; van Woerden, H. (1994). "Distribution and motions of HI in the Sa galaxies NGC 1169 and NGC 3898" (PDF). Astronomy and Astrophysics. 284: 395–407.
- ↑ "Astronomy Photo of the Day: 1/03/15 — NGC 1169". futurism.com. Retrieved 2015-12-01.
- ↑ Plait, Phil. "The Beauty of a Grain of Sand on the Cosmic Beach". slate.com. Retrieved 2015-12-01.
- ↑ "New General Catalog Objects: NGC 1150 - 1199". cseligman.com. Retrieved 2015-12-01.
External links
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