Star · A2V
μ PsA
μ PsA is a main-sequence star of spectral type A2V in the constellation Piscis Austrinus, 120.4 light-years from the Sun.
| Other names | HIP 109285 |
|---|---|
| Constellation | Piscis Austrinus |
| Distance | 120.4 light-years (36.9 pc) |
| Apparent magnitude | magnitude 4.50 |
| Absolute magnitude | magnitude 1.66 |
| Spectral type | A2V |
| Surface temperature | 9,500 K |
| Luminosity | 23.6 L☉ |
| Radius | 1.79 R☉ |
| Mass | 2.24 M☉ (estimated) |
| Right ascension (J2000) | 22h 08m 23.0s |
| Declination (J2000) | −32° 59′ 19″ |
| Space velocity (relative to the Sun) | 18.0 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 4.50). Visible from the whole Southern Hemisphere and north to latitude 57° N. South of latitude 57° 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 1906. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.1 million years.
The Sun seen from there
From a planet around μ PsA, the Sun would look like a star of magnitude 7.67, in the direction where our sky has the constellation Leo Minor. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- DENIS J220002.0-303832B 10.1 light-years
- HIP 110483 11.1 light-years
- HIP 108065 12.2 light-years
- HIP 110245 13.1 light-years
- HIP 108416 14.3 light-years
- 2MASS J21420580-3101162 14.3 light-years
- HIP 110655 15.3 light-years
- GJ 9787 15.9 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.