Star · K0 III
Libertas
Libertas is a giant star of spectral type K0 III in the constellation Aquila, 186.2 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Other names | ξ Aql · xi Aql · HIP 97938 |
|---|---|
| Constellation | Aquila |
| Distance | 186.2 light-years (57.1 pc) |
| Apparent magnitude | magnitude 4.71 |
| Absolute magnitude | magnitude 0.93 |
| Spectral type | K0 III |
| Surface temperature | 4,840 K |
| Luminosity | 58.5 L☉ |
| Radius | 10.9 R☉ |
| Mass | 1.74 M☉ |
| Age | 7.1 billion years |
| Metallicity [Fe/H] | -0.11 |
| Right ascension (J2000) | 19h 54m 14.9s |
| Declination (J2000) | +8° 27′ 41″ |
| Space velocity (relative to the Sun) | 54.6 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 4.71). Visible from the whole Northern Hemisphere and south to latitude 82° S. It stands highest at midnight in July, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1840. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.3 million years.
The Sun seen from there
From a planet around Libertas, the Sun would look like a star of magnitude 8.61, in the direction where our sky has the constellation Monoceros. It would be invisible to the naked eye.
Planets
- xi Aql b 137-day orbit · 13.4 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- υ Aql 15.2 light-years
- HIP 96976 16.1 light-years
- HIP 96522 16.2 light-years
- HIP 96979 16.3 light-years
- HIP 99367 17.5 light-years
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.