Star · M3
HIP 83556
HIP 83556 is a supergiant star of spectral type M3 in the constellation Triangulum Australe, 1,084 light-years from the Sun.
| Constellation | Triangulum Australe |
|---|---|
| Distance | 1,084 light-years (332.4 pc) |
| Apparent magnitude | magnitude 6.47 |
| Absolute magnitude | magnitude −1.14 |
| Spectral type | M3 |
| Surface temperature | 3,690 K |
| Luminosity | 1,040 L☉ |
| Radius | 78.7 R☉ |
| Mass | 6.6 M☉ (estimated) |
| Right ascension (J2000) | 17h 04m 33.7s |
| Declination (J2000) | −68° 16′ 43″ |
| Space velocity (relative to the Sun) | 40.5 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.47). Visible from the whole Southern Hemisphere and north to latitude 22° N. South of latitude 22° S it never sets. It stands highest at midnight in June, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 942. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 19 million years.
The Sun seen from there
From a planet around HIP 83556, the Sun would look like a star of magnitude 12.44, in the direction where our sky has the constellation Camelopardalis. 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.