Star · K0 III
HD 87816
HD 87816 is a giant star of spectral type K0 III in the constellation Vela, 435.9 light-years from the Sun. It is orbited by 2 confirmed exoplanet(s).
| Other names | HIP 49477 |
|---|---|
| Constellation | Vela |
| Distance | 435.9 light-years (133.6 pc) |
| Apparent magnitude | magnitude 6.50 |
| Absolute magnitude | magnitude 0.87 |
| Spectral type | K0 III |
| Surface temperature | 4,990 K |
| Luminosity | 45.2 L☉ |
| Radius | 9 R☉ |
| Mass | 2.41 M☉ |
| Metallicity [Fe/H] | 0.14 |
| Right ascension (J2000) | 10h 06m 07.2s |
| Declination (J2000) | −52° 11′ 17″ |
| Space velocity (relative to the Sun) | 37.2 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.50). Visible from the whole Southern Hemisphere and north to latitude 38° N. South of latitude 38° S it never sets. It stands highest at midnight in February, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1590. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 7.7 million years.
The Sun seen from there
From a planet around HD 87816, the Sun would look like a star of magnitude 10.46, in the direction where our sky has the constellation Lacerta. It would be invisible to the naked eye.
Planets
- HD 87816 b 484-day orbit · 12.7 R⊕
- HD 87816 c 7,600-day orbit · 12.4 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.