NGC 806

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

NGC 806 and PGC 3100716 (SDSS)

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

• List of NGC objects (1–1000)

References

1. "NASA/IPAC Extragalactic Database". ned.ipac.caltech.edu. Retrieved November 29, 2017.
2. An object's distance from Earth can be determined using Hubble's law: v=H_o 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=H_o
3. "Revised NGC Data for NGC 806". spider.seds.org. Retrieved December 9, 2017.
4. "Data for NGC 806". www.astronomy-mall.com. Retrieved December 9, 2017.
5. "Celestial Atlas". cseligman.com. Archived from the original on November 19, 2017. Retrieved December 2, 2017.

External links

• NGC 806 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
• SEDS