Astronomy:NGC 806
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Short description: Spiral galaxy in the constellation Cetus
| NGC 806 | |
|---|---|
 NGC 806 (SDSS) | |
| Observation data (J2000.0 epoch) | |
| Constellation | Cetus |
| Right ascension | 02h 03m 31.15s [1] |
| Declination | −09° 56′ 00.15″ [1] |
| Redshift | 0.013156 [1] |
| Helio radial velocity | 3944 ± 9 km/s [1] |
| Distance | 166 Mly[2] |
| Apparent magnitude (V) | 14.10 [3] |
| Apparent magnitude (B) | 14.80 [3] |
| Characteristics | |
| Type | Scd pec? HII [1] |
| Apparent size (V) | 1.2 x 0.4 [1] |
| Other designations | |
| PGC 7835, MCG -2-6-21 | |
NGC 806 is a spiral galaxy approximately 166 million light-years away from Earth in the constellation Cetus.[1] It was discovered by American astronomer Lewis A. Swift on November 1, 1886 with the 16" refractor at Warner Observatory.[4]
Interaction with galaxy PGC 3100716
NGC 806 and PGC 3100716 form a pair of galaxies in gravitational interaction. These two galaxies are either colliding or are the result of a collision.[5]
PGC 3100716 is a spiral galaxy with an apparent size of 0.09 by 0.08 arcmin.[1] It was not included in the original version of the New General Catalogue, and was later added as NGC 806-2.[3]
See also
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 "NASA/IPAC Extragalactic Database". http://ned.ipac.caltech.edu/cgi-bin/objsearch?objname=NGC+806.
- ↑ An object's distance from Earth can be determined using Hubble's law: v=Ho is Hubble's constant (70±5 (km/s)/Mpc). The relative uncertainty Δd/d divided by the distance is equal to the sum of the relative uncertainties of the velocity and v=Ho
- ↑ 3.0 3.1 3.2 "Revised NGC Data for NGC 806". http://spider.seds.org/ngc/revngcic.cgi?NGC806.
- ↑ "Data for NGC 806". http://www.astronomy-mall.com/Adventures.In.Deep.Space/NGC%201%20-%20999%20(11-30-17).htm.
- ↑ "Celestial Atlas". https://cseligman.com/text/atlas/ngc8.htm#806.
External links
- NGC 806 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
- SEDS
Coordinates: 
02h 03m 31.15s, -09° 56′ 00.15″
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