Epsilon Cygni
| Observation Data Epoch J2000 | |
|---|---|
| Variability | |
| Spectral Type | K0III |
| Right Ascension | 20:46:12.68 |
| Declination | +33:58:12.89 |
| Distance | 72.0134 ly (22.09 pc) |
| Apparent Magnitude (V) | 2.48 |
| Physical Characteristics | |
| Mass | ~3.978 x 1030 kg (2 M☉) |
| Radius | 16.008 million km (23 R☉) |
| Colour (B-V) | 1.03 |
| Colour (V-I) | 1.03 |
| Absolute Magnitude (V) | 0.74 |
| Luminosity (V) | 226 L☉ |
| Surface Temperature | 4708 K |
| Age | 1500 MYA |
| Rotation Period | |
| Oscillation Period | |
| Notable Features | |
| Other Designations | HIP 102488 |
| System | |
| Stellar Components | |
| Stellar Companions | |
| Planets and Minor Bodies | |
Epsilon Cygni (ε Cyg / ε Cygni) is a star in the constellation Cygnus. Its traditional name is Gienah, however Gamma Corvi has an identical traditional name.
Epsilon Cygni is a cool orange giant star that is, as many visible stars tend to be, well along in terms of its stellar evolution. While young in comparison to the Sun its larger mass gives it a much shorter lifespan, and the star is in the beginning stages of its death.
The name "Gienah" derives from the Arabic word for wing, جناح janāħ.
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Categories: Star stubs | Bayer objects | Cygnus constellation | Orange giants