Star · K1 IIIb Fe-0.5
Algieba
Algieba is a giant star of spectral type K1 IIIb Fe-0.5 in the constellation Leo, 130.1 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Other names | γ¹ Leo · gam1 Leo · HIP 50583 |
|---|---|
| Constellation | Leo |
| Distance | 130.1 light-years (39.9 pc) |
| Apparent magnitude | magnitude 2.01 |
| Absolute magnitude | magnitude −0.99 |
| Spectral type | K1 IIIb Fe-0.5 |
| Surface temperature | 4,330 K |
| Luminosity | 324 L☉ |
| Radius | 31.9 R☉ |
| Mass | 1.23 M☉ |
| Age | 2.4 billion years |
| Metallicity [Fe/H] | -0.51 |
| Right ascension (J2000) | 10h 19m 58.4s |
| Declination (J2000) | +19° 50′ 29″ |
| Space velocity (relative to the Sun) | 74.9 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 2.01). Visible from the whole Northern Hemisphere and south to latitude 70° S. North of latitude 70° N it never sets. It stands highest at midnight in February, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1896. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.3 million years.
The Sun seen from there
From a planet around Algieba, the Sun would look like a star of magnitude 7.83, in the direction where our sky has the constellation Aquarius. It would be invisible to the naked eye.
Planets
- gam1 Leo b 429-day orbit · 12.5 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 50882 6.73 light-years
- HIP 50375 9.23 light-years
- HIP 51874 11.0 light-years
- HIP 48785 12.7 light-years
- HIP 48786 12.8 light-years
- HIP 51550 13.4 light-years
- SIMP J10390822+2440446 14.9 light-years
- HIP 49324 15.4 light-years
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.