Star · B8V
HIP 66821
HIP 66821 is a main-sequence star of spectral type B8V in the constellation Centaurus, 289.1 light-years from the Sun.
| Constellation | Centaurus |
|---|---|
| Distance | 289.1 light-years (88.6 pc) |
| Apparent magnitude | magnitude 4.99 |
| Absolute magnitude | magnitude 0.25 |
| Spectral type | B8V |
| Surface temperature | 10,870 K |
| Luminosity | 107 L☉ |
| Radius | 2.92 R☉ |
| Mass | 3.46 M☉ (estimated) |
| Right ascension (J2000) | 13h 41m 44.8s |
| Declination (J2000) | −54° 33′ 34″ |
| Space velocity (relative to the Sun) | 25.6 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 4.99). Visible from the whole Southern Hemisphere and north to latitude 35° N. South of latitude 35° S it never sets. It stands highest at midnight in April, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1737. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 5.1 million years.
The Sun seen from there
From a planet around HIP 66821, the Sun would look like a star of magnitude 9.57, in the direction where our sky has the constellation Perseus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 66963 7.51 light-years
- HIP 67755 11.0 light-years
- HIP 66075 13.6 light-years
- HIP 67919 14.5 light-years
- HIP 65718 15.9 light-years
- HIP 65385 17.1 light-years
- HIP 67703 18.8 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.