Star · B9I
HIP 50456
HIP 50456 is a supergiant star of spectral type B9I in the constellation Antlia, 4,589 light-years from the Sun.
| Constellation | Antlia |
|---|---|
| Distance | 4,589 light-years (1,407 pc) |
| Apparent magnitude | magnitude 5.52 |
| Absolute magnitude | magnitude −5.22 |
| Spectral type | B9I |
| Surface temperature | 7,610 K |
| Luminosity | 10,700 L☉ |
| Radius | 59.5 R☉ |
| Mass | 12.9 M☉ (estimated) |
| Right ascension (J2000) | 10h 18m 07.6s |
| Declination (J2000) | −28° 59′ 31″ |
| Space velocity (relative to the Sun) | 133.7 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.52). Visible from the whole Southern Hemisphere and north to latitude 61° N. South of latitude 61° 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 4,589 years ago. At that time the first farming villages were being founded; there was no writing yet. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 81 million years.
The Sun seen from there
From a planet around HIP 50456, the Sun would look like a star of magnitude 15.57, in the direction where our sky has the constellation Pegasus. 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.