Star · B9
Cujam
Cujam is a main-sequence star of spectral type B9 in the constellation Hercules, 248.9 light-years from the Sun.
| Other names | ω Her · HIP 80463 |
|---|---|
| Constellation | Hercules |
| Distance | 248.9 light-years (76.3 pc) |
| Apparent magnitude | magnitude 4.57 |
| Absolute magnitude | magnitude 0.16 |
| Spectral type | B9 |
| Surface temperature | 10,100 K |
| Luminosity | 104 L☉ |
| Radius | 3.32 R☉ |
| Mass | 3.42 M☉ (estimated) |
| Right ascension (J2000) | 16h 25m 25.0s |
| Declination (J2000) | +14° 01′ 59″ |
| Space velocity (relative to the Sun) | 26.3 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 4.57). Visible from the whole Northern Hemisphere and south to latitude 76° S. North of latitude 76° N it never sets. It stands highest at midnight in May, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1777. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 4.4 million years.
The Sun seen from there
From a planet around Cujam, the Sun would look like a star of magnitude 9.24, in the direction where our sky has the constellation Eridanus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HD 148164 9.48 light-years
- HIP 80543 10.7 light-years
- HIP 80288 19.0 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.