Star · B3V
λ Lup
λ Lup is a main-sequence star of spectral type B3V in the constellation Lupus, 921.2 light-years from the Sun.
| Other names | HIP 74117 |
|---|---|
| Constellation | Lupus |
| Distance | 921.2 light-years (282.4 pc) |
| Apparent magnitude | magnitude 4.07 |
| Absolute magnitude | magnitude −3.18 |
| Spectral type | B3V |
| Surface temperature | 12,730 K |
| Luminosity | 3,460 L☉ |
| Radius | 12.1 R☉ |
| Mass | 9.32 M☉ (estimated) |
| Right ascension (J2000) | 15h 08m 50.6s |
| Declination (J2000) | −45° 16′ 47″ |
| Space velocity (relative to the Sun) | 33.6 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 4.07). Visible from the whole Southern Hemisphere and north to latitude 45° N. South of latitude 45° 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 1105. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 16 million years.
The Sun seen from there
From a planet around λ Lup, the Sun would look like a star of magnitude 12.08, in the direction where our sky has the constellation Perseus. 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.