Star · K0II
HIP 31603
HIP 31603 is a bright giant star of spectral type K0II in the constellation Columba, 1,777 light-years from the Sun.
| Constellation | Columba |
|---|---|
| Distance | 1,777 light-years (545.0 pc) |
| Apparent magnitude | magnitude 6.36 |
| Absolute magnitude | magnitude −2.32 |
| Spectral type | K0II |
| Surface temperature | 4,420 K |
| Luminosity | 1,410 L☉ |
| Radius | 64.2 R☉ |
| Mass | 7.22 M☉ (estimated) |
| Right ascension (J2000) | 6h 36m 51.3s |
| Declination (J2000) | −41° 33′ 26″ |
| Space velocity (relative to the Sun) | 25.4 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.36). Visible from the whole Southern Hemisphere and north to latitude 48° N. South of latitude 48° S it never sets. It stands highest at midnight in December, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 249. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 32 million years.
The Sun seen from there
From a planet around HIP 31603, the Sun would look like a star of magnitude 13.51, in the direction where our sky has the constellation Lyra. 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.