Star · B8I
HIP 31446
HIP 31446 is a supergiant star of spectral type B8I in the constellation Monoceros, 2,505 light-years from the Sun.
| Constellation | Monoceros |
|---|---|
| Distance | 2,505 light-years (768.0 pc) |
| Apparent magnitude | magnitude 5.78 |
| Absolute magnitude | magnitude −3.65 |
| Spectral type | B8I |
| Surface temperature | 10,080 K |
| Luminosity | 3,430 L☉ |
| Radius | 19.2 R☉ |
| Mass | 9.3 M☉ (estimated) |
| Right ascension (J2000) | 6h 35m 15.8s |
| Declination (J2000) | +0° 53′ 25″ |
| Space velocity (relative to the Sun) | 14.8 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.78). Visible from the whole Northern Hemisphere and south to latitude 89° S. 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 480 BC. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 44 million years.
The Sun seen from there
From a planet around HIP 31446, the Sun would look like a star of magnitude 14.26, in the direction where our sky has the constellation Serpens. 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.