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NGC 18

From Wikipedia, the free encyclopedia
Double star system in the constellation of Pegasus

NGC 18

Observation data
EpochJ2000      EquinoxJ2000
ConstellationPegasus[1]
Right ascension00h 09m 23s[1]
Declination+27° 43′ 56″[1]
Apparent magnitude (V)14[1]
Other designations
Pul-3 10207/10208[2][3]
Database references
SIMBADPul-3 10207
Pul-3 10208

NGC 18 is adouble star system located in the constellation ofPegasus.[1] It was first recorded byHerman Schultz on 15 October 1866. It was looked for but not found byÉdouard Stephan on 2 October 1882. It was independently observed byGuillaume Bigourdan in November 1886.[1]

Both stars are2528±20 light-years away, and based on this distance have a minimum separation of approximately 2,700astronomical units, an unusually wide separation for a binary system.

See also

[edit]

References

[edit]
  1. ^abcdefSeligman, Courtney (March 2010)."NGC Objects: NGC 1 - 49".Celestial Atlas. Retrieved27 October 2010.
  2. ^"Pul-3 10207".SIMBAD.Centre de données astronomiques de Strasbourg. Retrieved31 January 2018.
  3. ^"Pul-3 10208".SIMBAD.Centre de données astronomiques de Strasbourg. Retrieved31 January 2018.

External links

[edit]
  • Media related toNGC 18 at Wikimedia Commons
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