Star · B7V
57 Aql
57 Aql is a main-sequence star of spectral type B7V in the constellation Aquila, 450.2 light-years from the Sun.
| Other names | HIP 97966 |
|---|---|
| Constellation | Aquila |
| Distance | 450.2 light-years (138.0 pc) |
| Apparent magnitude | magnitude 5.70 |
| Absolute magnitude | magnitude 0.00 |
| Spectral type | B7V |
| Surface temperature | 11,230 K |
| Luminosity | 144 L☉ |
| Radius | 3.17 R☉ |
| Mass | 3.76 M☉ (estimated) |
| Right ascension (J2000) | 19h 54m 37.7s |
| Declination (J2000) | −8° 13′ 38″ |
| Space velocity (relative to the Sun) | 18.7 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.70). Visible from the whole Southern Hemisphere and north to latitude 82° N. 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 1576. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 8.0 million years.
The Sun seen from there
From a planet around 57 Aql, the Sun would look like a star of magnitude 10.53, in the direction where our sky has the constellation Canis Minor. 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.