Star · G5I
ψ And
ψ And is a supergiant star of spectral type G5I in the constellation Andromeda, 1,995 light-years from the Sun.
| Other names | HIP 117221 |
|---|---|
| Constellation | Andromeda |
| Distance | 1,995 light-years (611.6 pc) |
| Apparent magnitude | magnitude 4.97 |
| Absolute magnitude | magnitude −3.96 |
| Spectral type | G5I |
| Surface temperature | 4,550 K |
| Luminosity | 5,830 L☉ |
| Radius | 123 R☉ |
| Mass | 10.8 M☉ (estimated) |
| Right ascension (J2000) | 23h 46m 02.0s |
| Declination (J2000) | +46° 25′ 13″ |
| Space velocity (relative to the Sun) | 39.4 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 4.97). Visible from the whole Northern Hemisphere and south to latitude 44° S. North of latitude 44° N it never sets. 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 31. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 35 million years.
The Sun seen from there
From a planet around ψ And, the Sun would look like a star of magnitude 13.76, in the direction where our sky has the constellation Centaurus. 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.