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]

ConstellationPegasus^[1]

Right ascension00^h 09^m 23.1^s[1]

Declination+27° 43′ 55″^[1]

Apparentmagnitude(V)14^[1]

Quick facts Constellation, Right ascension ...

NGC 18

Observation data Epoch J2000      Equinox J2000
Constellation	Pegasus[1]
Right ascension	00h 09m 23.1s[1]
Declination	+27° 43′ 55″[1]
Apparent magnitude (V)	14[1]
Other designations
Pul-3 10207/10208[2][3]
Database references
SIMBAD	Pul-3 10207

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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]}