Star · B5V
ψ² Aqr
ψ² Aqr is a main-sequence star of spectral type B5V in the constellation Aquarius, 401.7 light-years from the Sun.
| Other names | HIP 115033 |
|---|---|
| Constellation | Aquarius |
| Distance | 401.7 light-years (123.2 pc) |
| Apparent magnitude | magnitude 4.41 |
| Absolute magnitude | magnitude −1.04 |
| Spectral type | B5V |
| Surface temperature | 12,370 K |
| Luminosity | 453 L☉ |
| Radius | 4.63 R☉ |
| Mass | 5.21 M☉ (estimated) |
| Right ascension (J2000) | 23h 17m 54.2s |
| Declination (J2000) | −9° 10′ 57″ |
| Space velocity (relative to the Sun) | 13.1 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 4.41). Visible from the whole Southern Hemisphere and north to latitude 81° 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 1624. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 7.1 million years.
The Sun seen from there
From a planet around ψ² Aqr, the Sun would look like a star of magnitude 10.28, in the direction where our sky has the constellation Leo. 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.