Star · K5
HIP 54811
HIP 54811 is a supergiant star of spectral type K5 in the constellation Centaurus, 1,017 light-years from the Sun.
| Constellation | Centaurus |
|---|---|
| Distance | 1,017 light-years (311.8 pc) |
| Apparent magnitude | magnitude 5.77 |
| Absolute magnitude | magnitude −1.70 |
| Spectral type | K5 |
| Surface temperature | 3,570 K |
| Luminosity | 2,100 L☉ |
| Radius | 120 R☉ |
| Mass | 8.09 M☉ (estimated) |
| Right ascension (J2000) | 11h 13m 14.7s |
| Declination (J2000) | −44° 22′ 20″ |
| Space velocity (relative to the Sun) | 8.8 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.77). Visible from the whole Southern Hemisphere and north to latitude 46° N. South of latitude 46° S it never sets. It stands highest at midnight in March, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1009. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 18 million years.
The Sun seen from there
From a planet around HIP 54811, the Sun would look like a star of magnitude 12.30, in the direction where our sky has the constellation Andromeda. 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.