NGC 18

NGC 18

Observation data
Epoch J2000      Equinox ICRS
Constellation Pegasus
Right ascension 00h 09m 23.1s
Declination +27° 43′ 55″
Apparent magnitude (V) 14
Other designations
Pul-3 10207/10208
Database references
SIMBADPul-3 10207

NGC 18 is a double star system located in the constellation of Pegasus. It was first recorded by Herman Schultz on 15 October 1866. It was looked for but not found by Édouard Stephan on 2 October 1882. It was independently observed by Guillaume Bigourdan in November 1886.

Both stars are 2528±20 light-years away, and based on this distance have a minimum separation of approximately 2,700 astronomical units, an unusually wide separation for a binary system.[citation needed]

See also

References

  1. 1 2 3 4 5 6 Seligman, Courtney (March 2010). "NGC Objects: NGC 1 - 49". Celestial Atlas. Retrieved 12 December 2025.
  2. ↑ "Pul-3 10207". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 31 January 2018.
  3. ↑ "Pul-3 10208". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 31 January 2018.