Star · B8III
48 Cyg
48 Cyg is a giant star of spectral type B8III in the constellation Cygnus, 818.9 light-years from the Sun.
| Other names | HIP 101765 |
|---|---|
| Constellation | Cygnus |
| Distance | 818.9 light-years (251.1 pc) |
| Apparent magnitude | magnitude 6.32 |
| Absolute magnitude | magnitude −0.68 |
| Spectral type | B8III |
| Surface temperature | 11,390 K |
| Luminosity | 276 L☉ |
| Radius | 4.26 R☉ |
| Mass | 4.52 M☉ (estimated) |
| Right ascension (J2000) | 20h 37m 31.8s |
| Declination (J2000) | +31° 34′ 21″ |
| Space velocity (relative to the Sun) | 21.5 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.32). Visible from the whole Northern Hemisphere and south to latitude 58° S. North of latitude 58° 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 1207. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 15 million years.
The Sun seen from there
From a planet around 48 Cyg, the Sun would look like a star of magnitude 11.83, in the direction where our sky has the constellation Pyxis. 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.