Star · B8III
HIP 74490
HIP 74490 is a giant star of spectral type B8III in the constellation Libra, 509.3 light-years from the Sun.
| Constellation | Libra |
|---|---|
| Distance | 509.3 light-years (156.2 pc) |
| Apparent magnitude | magnitude 6.47 |
| Absolute magnitude | magnitude 0.50 |
| Spectral type | B8III |
| Surface temperature | 10,460 K |
| Luminosity | 79.8 L☉ |
| Radius | 2.72 R☉ |
| Mass | 3.17 M☉ (estimated) |
| Right ascension (J2000) | 15h 13m 17.4s |
| Declination (J2000) | −24° 00′ 30″ |
| Space velocity (relative to the Sun) | 17.9 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 66° N. South of latitude 66° 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 1517. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 9.0 million years.
The Sun seen from there
From a planet around HIP 74490, the Sun would look like a star of magnitude 10.80, 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.