Star · G8III
HD 203387
HD 203387 is a giant star of spectral type G8III in the constellation Capricornus, 201.3 light-years from the Sun. It is orbited by 2 confirmed exoplanet(s).
| Other names | ι Cap · HIP 105515 |
|---|---|
| Constellation | Capricornus |
| Distance | 201.3 light-years (61.7 pc) |
| Apparent magnitude | magnitude 4.28 |
| Absolute magnitude | magnitude 0.33 |
| Spectral type | G8III |
| Surface temperature | 5,170 K |
| Luminosity | 72.4 L☉ |
| Radius | 10.6 R☉ |
| Mass | 2.82 M☉ |
| Metallicity [Fe/H] | 0.05 |
| Right ascension (J2000) | 21h 22m 14.8s |
| Declination (J2000) | −16° 50′ 04″ |
| Space velocity (relative to the Sun) | 15.1 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 4.28). Visible from the whole Southern Hemisphere and north to latitude 73° N. South of latitude 73° S 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 1825. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.6 million years.
The Sun seen from there
From a planet around HD 203387, the Sun would look like a star of magnitude 8.78, in the direction where our sky has the constellation Leo. It would be invisible to the naked eye.
Planets
- HD 203387 b 513-day orbit · 13.1 R⊕
- HD 203387 c 2,480-day orbit · 12.6 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.