Star · K0III
11 Cep
11 Cep is a giant star of spectral type K0III in the constellation Cepheus, 179.4 light-years from the Sun.
| Other names | HIP 107119 |
|---|---|
| Constellation | Cepheus |
| Distance | 179.4 light-years (55.0 pc) |
| Apparent magnitude | magnitude 4.55 |
| Absolute magnitude | magnitude 0.85 |
| Spectral type | K0III |
| Surface temperature | 4,500 K |
| Luminosity | 71.7 L☉ |
| Radius | 14 R☉ |
| Mass | 3.08 M☉ (estimated) |
| Right ascension (J2000) | 21h 41m 55.3s |
| Declination (J2000) | +71° 18′ 41″ |
| Space velocity (relative to the Sun) | 54.0 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 4.55). Visible from the whole Northern Hemisphere and south to latitude 19° S. North of latitude 19° N it never sets. It stands highest at midnight in August, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1847. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.2 million years.
The Sun seen from there
From a planet around 11 Cep, the Sun would look like a star of magnitude 8.53, in the direction where our sky has the constellation Carina. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 107055 9.18 light-years
- HIP 109384 15.3 light-years
- HIP 104171 16.6 light-years
- 31 Cep 17.3 light-years
- HIP 102500 18.5 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.