Star · K4III
HIP 74391
HIP 74391 is a giant star of spectral type K4III in the constellation Libra, 744.9 light-years from the Sun.
| Constellation | Libra |
|---|---|
| Distance | 744.9 light-years (228.4 pc) |
| Apparent magnitude | magnitude 6.49 |
| Absolute magnitude | magnitude −0.30 |
| Spectral type | K4III |
| Surface temperature | 3,780 K |
| Luminosity | 422 L☉ |
| Radius | 47.8 R☉ |
| Mass | 5.11 M☉ (estimated) |
| Right ascension (J2000) | 15h 12m 12.0s |
| Declination (J2000) | −19° 06′ 23″ |
| Space velocity (relative to the Sun) | 55.5 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.49). Visible from the whole Southern Hemisphere and north to latitude 71° N. South of latitude 71° 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 1281. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 13 million years.
The Sun seen from there
From a planet around HIP 74391, the Sun would look like a star of magnitude 11.62, 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.