Star · G5I
HIP 47854
HIP 47854 is a supergiant star of spectral type G5I in the constellation Carina, 1,644 light-years from the Sun.
| Constellation | Carina |
|---|---|
| Distance | 1,644 light-years (504.0 pc) |
| Apparent magnitude | magnitude 3.69 |
| Absolute magnitude | magnitude −4.82 |
| Spectral type | G5I |
| Surface temperature | 4,720 K |
| Luminosity | 11,500 L☉ |
| Radius | 161 R☉ |
| Mass | 13.1 M☉ (estimated) |
| Right ascension (J2000) | 9h 45m 14.8s |
| Declination (J2000) | −62° 30′ 28″ |
| Space velocity (relative to the Sun) | 35.9 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 3.69). Visible from the whole Southern Hemisphere and north to latitude 27° N. South of latitude 27° 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 around the year 382. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 29 million years.
The Sun seen from there
From a planet around HIP 47854, the Sun would look like a star of magnitude 13.34, in the direction where our sky has the constellation Cepheus. 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.