Star · M2III
φ Aqr
φ Aqr is a giant star of spectral type M2III in the constellation Aquarius, 227.3 light-years from the Sun.
| Other names | HIP 114724 |
|---|---|
| Constellation | Aquarius |
| Distance | 227.3 light-years (69.7 pc) |
| Apparent magnitude | magnitude 4.22 |
| Absolute magnitude | magnitude 0.00 |
| Spectral type | M2III |
| Surface temperature | 3,730 K |
| Luminosity | 343 L☉ |
| Radius | 44.4 R☉ |
| Mass | 4.82 M☉ (estimated) |
| Right ascension (J2000) | 23h 14m 19.4s |
| Declination (J2000) | −6° 02′ 56″ |
| Space velocity (relative to the Sun) | 65.7 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 4.22). Visible from the whole Southern Hemisphere and north to latitude 84° N. It stands highest at midnight in September, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1799. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 4.0 million years.
The Sun seen from there
From a planet around φ Aqr, the Sun would look like a star of magnitude 9.05, 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):
- 83 Aqr 11.4 light-years
- CFBDS J232449.19-045736.5 12.1 light-years
- ψ³ Aqr 15.4 light-years
- HIP 114666 17.5 light-years
- HIP 114370 17.5 light-years
- HIP 114906 17.7 light-years
- HIP 114960 18.2 light-years
- HIP 114822 18.7 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.