Star · K0III
47 Aqr
47 Aqr is a giant star of spectral type K0III in the constellation Aquarius, 188.0 light-years from the Sun.
| Other names | HIP 110391 |
|---|---|
| Constellation | Aquarius |
| Distance | 188.0 light-years (57.6 pc) |
| Apparent magnitude | magnitude 5.12 |
| Absolute magnitude | magnitude 1.32 |
| Spectral type | K0III |
| Surface temperature | 4,610 K |
| Luminosity | 43.2 L☉ |
| Radius | 10.3 R☉ |
| Mass | 2.66 M☉ (estimated) |
| Right ascension (J2000) | 22h 21m 35.6s |
| Declination (J2000) | −21° 35′ 54″ |
| Space velocity (relative to the Sun) | 54.6 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.12). Visible from the whole Southern Hemisphere and north to latitude 68° N. South of latitude 68° S it never sets. It stands highest at midnight in August, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1838. 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 47 Aqr, the Sun would look like a star of magnitude 8.63, in the direction where our sky has the constellation Leo. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 110424 9.65 light-years
- HIP 110512 14.1 light-years
- HIP 111640 15.8 light-years
- HIP 109509 18.4 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.