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] |
Heliocentric 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
[edit]![](https://upload.wikimedia.org/wikipedia/commons/thumb/7/7a/NGC_0806_SDSS.jpg/220px-NGC_0806_SDSS.jpg)
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
[edit]References
[edit]- ^ a b c d e f g h "NASA/IPAC Extragalactic Database". ned.ipac.caltech.edu. Retrieved November 29, 2017.
- ^ 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
- ^ a b c "Revised NGC Data for NGC 806". spider.seds.org. Retrieved December 9, 2017.
- ^ "Data for NGC 806". www.astronomy-mall.com. Retrieved December 9, 2017.
- ^ "Celestial Atlas". cseligman.com. Archived from the original on November 19, 2017. Retrieved December 2, 2017.
External links
[edit]- NGC 806 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
- SEDS