Star · B0V
HIP 102771
HIP 102771 is a main-sequence star of spectral type B0V in the constellation Cepheus, 3,056 light-years from the Sun.
| Constellation | Cepheus |
|---|---|
| Distance | 3,056 light-years (936.9 pc) |
| Apparent magnitude | magnitude 6.45 |
| Absolute magnitude | magnitude −3.41 |
| Spectral type | B0V |
| Surface temperature | 9,820 K |
| Luminosity | 2,650 L☉ |
| Radius | 17.8 R☉ |
| Mass | 8.63 M☉ (estimated) |
| Right ascension (J2000) | 20h 49m 17.4s |
| Declination (J2000) | +64° 02′ 32″ |
| Space velocity (relative to the Sun) | 35.7 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.45). Visible from the whole Northern Hemisphere and south to latitude 26° S. North of latitude 26° 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 1031 BC. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 54 million years.
The Sun seen from there
From a planet around HIP 102771, the Sun would look like a star of magnitude 14.69, in the direction where our sky has the constellation Carina. 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.