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NGC 806

Coordinates: Sky map 02h 03m 31.15s, -09° 56′ 00.15″
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NGC 806
NGC 806 (SDSS)
Observation data (J2000.0 epoch)
ConstellationCetus
Right ascension02h 03m 31.15s [1]
Declination−09° 56′ 00.15″ [1]
Redshift0.013156 [1]
Heliocentric radial velocity3944 ± 9 km/s [1]
Distance166 Mly[2]
Apparent magnitude (V)14.10 [3]
Apparent magnitude (B)14.80 [3]
Characteristics
TypeScd 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

References

  1. ^ a b c d e f g h "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=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. ^ a b c "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.
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