Star · F3IV
42 Aql
42 Aql is a subgiant star of spectral type F3IV in the constellation Aquila, 104.8 light-years from the Sun.
| Other names | HIP 96556 |
|---|---|
| Constellation | Aquila |
| Distance | 104.8 light-years (32.1 pc) |
| Apparent magnitude | magnitude 5.45 |
| Absolute magnitude | magnitude 2.91 |
| Spectral type | F3IV |
| Surface temperature | 6,730 K |
| Luminosity | 5.8 L☉ |
| Radius | 1.77 R☉ |
| Mass | 1.55 M☉ (estimated) |
| Right ascension (J2000) | 19h 37m 47.3s |
| Declination (J2000) | −4° 38′ 52″ |
| Space velocity (relative to the Sun) | 42.1 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.45). Visible from the whole Southern Hemisphere and north to latitude 85° 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 1921. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.9 million years.
The Sun seen from there
From a planet around 42 Aql, the Sun would look like a star of magnitude 7.37, in the direction where our sky has the constellation Canis Minor. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.