File:NGC_0018_SDSS.png · Wikimedia Commons · See Wikimedia Commons
NGC 18
Sign in to saveAlso known as New General Catalogue 18
double star in the constellation of Pegasus
Key facts
- Constellation
- Pegasus
- Right ascension
- 00 09 23.1
- Declination
- +27 ° 43 ′ 55 ″
via Wikipedia infobox
Wikidata facts
- Instance of
- double star
- Constellation
- Pegasus
- Image
- NGC 0018 SDSS.png
Show 6 more facts
- Commons category
- NGC 18
- catalog code
- NGC 18
- time of discovery or invention
- 1866-10-15
- right ascension
- 2.346233
- declination
- 27.732071
- epoch
- J2000.0
via Wikidata · CC0
~1 min read
Encyclopedic overview
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.
Excerpted from Wikipedia’s “NGC 18” article, available under the CC BY-SA 4.0 licence.