Star · K2III
ε Aql
ε Aql is a giant star of spectral type K2III in the constellation Aquila, 179.4 light-years from the Sun.
| Other names | HIP 93244 |
|---|---|
| Constellation | Aquila |
| Distance | 179.4 light-years (55.0 pc) |
| Apparent magnitude | magnitude 4.02 |
| Absolute magnitude | magnitude 0.32 |
| Spectral type | K2III |
| Surface temperature | 4,550 K |
| Luminosity | 112 L☉ |
| Radius | 17 R☉ |
| Mass | 3.5 M☉ (estimated) |
| Right ascension (J2000) | 18h 59m 37.4s |
| Declination (J2000) | +15° 04′ 06″ |
| Space velocity (relative to the Sun) | 51.0 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 4.02). Visible from the whole Northern Hemisphere and south to latitude 75° S. North of latitude 75° N it never sets. 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 1847. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.2 million years.
The Sun seen from there
From a planet around ε Aql, the Sun would look like a star of magnitude 8.53, in the direction where our sky has the constellation Canis Major. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 92879 7.55 light-years
- HIP 93695 14.4 light-years
- HIP 94751 18.1 light-years
- HIP 91704 19.9 light-years
- HIP 91295 19.9 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.