Star · M2III
ω² Cyg
ω² Cyg is a giant star of spectral type M2III in the constellation Cygnus, 454.1 light-years from the Sun.
| Other names | HIP 101243 |
|---|---|
| Constellation | Cygnus |
| Distance | 454.1 light-years (139.2 pc) |
| Apparent magnitude | magnitude 5.44 |
| Absolute magnitude | magnitude −0.28 |
| Spectral type | M2III |
| Surface temperature | 3,700 K |
| Luminosity | 465 L☉ |
| Radius | 52.6 R☉ |
| Mass | 5.25 M☉ (estimated) |
| Right ascension (J2000) | 20h 31m 18.8s |
| Declination (J2000) | +49° 13′ 13″ |
| Space velocity (relative to the Sun) | 68.1 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.44). Visible from the whole Northern Hemisphere and south to latitude 41° S. North of latitude 41° N it never sets. It stands highest at midnight in July, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1572. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 8.1 million years.
The Sun seen from there
From a planet around ω² Cyg, the Sun would look like a star of magnitude 10.55, in the direction where our sky has the constellation Vela. It would be invisible to the naked eye.
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.