Gamma Cygni
Sign in to saveAlso known as Sadr, 37 Cygni, γ Cygni, HIP 100453, HIC 100453, 37 Cyg, γ Cyg, HD 194093
star in the northern constellation Cygnus
Key facts
- Constellation
- Cygnus
- Right ascension
- 20 22 13.70184
- Declination
- +40 ° 15 ′ 24.0450 ″
- Spectral type
- F8 Iab
- U b color index
- +0.54
- B v color index
- +0.67
- Variable type
- suspected
via Wikipedia infobox
~4 min read
Encyclopedic overview
Gamma Cygni is a star in the northern constellation of Cygnus, forming the intersection of an asterism of five stars called the Northern Cross. It is officially named Sadr /ˈsædər/; Gamma Cygni is its Bayer designation, which that is Latinized from γ Cygni, and abbreviated Gamma Cyg or γ Cyg. Based upon parallax measurements obtained during the Hipparcos mission, it is approximately 1,800 light-years (560 parsecs) from the Sun.
It forms the primary or 'A' component of a multiple star system designated WDS J20222+4015 (the secondary or 'BCD' component is WDS J20222+4015BCD, a close triplet of stars 41" away from γ Cygni).
Excerpted from Wikipedia’s “Gamma Cygni” article, available under the CC BY-SA 4.0 licence.