Star · M2
HIP 31099
HIP 31099 is a supergiant star of spectral type M2 in the constellation Columba, 918.8 light-years from the Sun.
| Constellation | Columba |
|---|---|
| Distance | 918.8 light-years (281.7 pc) |
| Apparent magnitude | magnitude 6.26 |
| Absolute magnitude | magnitude −0.99 |
| Spectral type | M2 |
| Surface temperature | 3,650 K |
| Luminosity | 958 L☉ |
| Radius | 77.4 R☉ |
| Mass | 6.46 M☉ (estimated) |
| Right ascension (J2000) | 6h 31m 34.9s |
| Declination (J2000) | −36° 56′ 24″ |
| Space velocity (relative to the Sun) | 109.5 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.26). Visible from the whole Southern Hemisphere and north to latitude 53° N. South of latitude 53° 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 1107. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 16 million years.
The Sun seen from there
From a planet around HIP 31099, the Sun would look like a star of magnitude 12.08, 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.