5.21
Apparent Mag11.41
Distance (ly)K5V
Spectral Type4,526
Temperature (K)61 Cygni was the first star to have its distance measured by parallax, by Friedrich Bessel in 1838. It is a binary of two K-type dwarfs.
Stellar Data
Apparent Magnitude5.21
Absolute Magnitude7.49
Distance11.41 light-years
Spectral TypeK5V
Temperature4,526 K
Luminosity0.15 L☉
Radius0.665 R☉
Mass0.7 M☉
Right Ascension21h 06m 53.9s
Declination+38° 44′ 57.9″
ConstellationCygnus
Notable Facts
- 61 Cygni was the first star to have its parallax measured in 1838
- Friedrich Bessel accomplished this historic measurement
- It consists of two K-type main-sequence stars