Star · M4V
PSO J078.9904+31.0171
PSO J078.9904+31.0171 is a main-sequence star of spectral type M4V in the constellation Auriga, 212.0 light-years from the Sun.
| Constellation | Auriga |
|---|---|
| Distance | 212.0 light-years (65.0 pc) |
| Apparent magnitude | magnitude 22.17 |
| Absolute magnitude | magnitude 18.11 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 8.99 × 10⁻⁵ L☉ |
| Radius | 0.0357 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 5h 15m 57.7s |
| Declination (J2000) | +31° 01′ 02″ |
| Space velocity (relative to the Sun) | 18.6 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 22.17. Visible from the whole Northern Hemisphere and south to latitude 59° S. North of latitude 59° N it never sets. It stands highest at midnight in December, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1814. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.8 million years.
The Sun seen from there
From a planet around PSO J078.9904+31.0171, the Sun would look like a star of magnitude 8.89, in the direction where our sky has the constellation Scorpius. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 24877 8.79 light-years
- HIP 24019 12.2 light-years
- HIP 23283 17.6 light-years
- HIP 24065 18.2 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.