Star · K4
HIP 72310
HIP 72310 is a supergiant star of spectral type K4 in the constellation Libra, 1,255 light-years from the Sun.
| Constellation | Libra |
|---|---|
| Distance | 1,255 light-years (384.7 pc) |
| Apparent magnitude | magnitude 6.05 |
| Absolute magnitude | magnitude −1.88 |
| Spectral type | K4 |
| Surface temperature | 3,580 K |
| Luminosity | 2,410 L☉ |
| Radius | 127 R☉ |
| Mass | 8.41 M☉ (estimated) |
| Right ascension (J2000) | 14h 47m 13.7s |
| Declination (J2000) | −21° 19′ 30″ |
| Space velocity (relative to the Sun) | 33.6 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.05). Visible from the whole Southern Hemisphere and north to latitude 69° N. South of latitude 69° S it never sets. It stands highest at midnight in May, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 771. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 22 million years.
The Sun seen from there
From a planet around HIP 72310, the Sun would look like a star of magnitude 12.76, in the direction where our sky has the constellation Aries. 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.