Star · K2III
HIP 84731
HIP 84731 is a giant star of spectral type K2III in the constellation Ara, 1,442 light-years from the Sun.
| Constellation | Ara |
|---|---|
| Distance | 1,442 light-years (442.2 pc) |
| Apparent magnitude | magnitude 5.93 |
| Absolute magnitude | magnitude −2.30 |
| Spectral type | K2III |
| Surface temperature | 3,970 K |
| Luminosity | 2,110 L☉ |
| Radius | 97.1 R☉ |
| Mass | 8.09 M☉ (estimated) |
| Right ascension (J2000) | 17h 19m 12.5s |
| Declination (J2000) | −59° 41′ 41″ |
| Space velocity (relative to the Sun) | 19.2 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.93). Visible from the whole Southern Hemisphere and north to latitude 30° N. South of latitude 30° 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 584. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 26 million years.
The Sun seen from there
From a planet around HIP 84731, the Sun would look like a star of magnitude 13.06, 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.