NGC 18

NGC 18 is a double star system located in the constellation of Pegasus.^[1] 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.^[1]

NGC 18

Observation data Epoch J2000      Equinox J2000
Constellation	Pegasus[1]
Right ascension	00h 09m 23s[1]
Declination	+27° 43′ 56″[1]
Apparent magnitude (V)	14[1]
Other designations
Pul-3 10207/10208[2][3]
Database references
SIMBAD	Pul-3 10207
	Pul-3 10208

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.

See also

• Double star
• Binary star
• List of NGC objects
• List of NGC objects (1–1000)