Star · K2 III
Rasalas
Rasalas is a giant star of spectral type K2 III in the constellation Leo, 125.0 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Other names | μ Leo · mu Leo · HIP 48455 |
|---|---|
| Constellation | Leo |
| Distance | 125.0 light-years (38.3 pc) |
| Apparent magnitude | magnitude 3.88 |
| Absolute magnitude | magnitude 0.96 |
| Spectral type | K2 III |
| Surface temperature | 4,540 K |
| Luminosity | 62.7 L☉ |
| Radius | 11.4 R☉ |
| Mass | 1.5 M☉ |
| Age | 3.4 billion years |
| Metallicity [Fe/H] | 0.36 |
| Right ascension (J2000) | 9h 52m 45.8s |
| Declination (J2000) | +26° 00′ 25″ |
| Space velocity (relative to the Sun) | 42.8 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 3.88). Visible from the whole Northern Hemisphere and south to latitude 64° S. North of latitude 64° 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 1901. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.2 million years.
The Sun seen from there
From a planet around Rasalas, the Sun would look like a star of magnitude 7.75, in the direction where our sky has the constellation Piscis Austrinus. It would be invisible to the naked eye.
Planets
- mu Leo b 358-day orbit · 13.3 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- 22 Leo 5.91 light-years
- HIP 49046 8.76 light-years
- HIP 46671 10.9 light-years
- HIP 50355 12.1 light-years
- 2MASSW J0944027+313132 12.9 light-years
- HIP 49580 13.2 light-years
- HIP 48024 14.4 light-years
- HIP 48785 16.4 light-years
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.