Star · M4V
PSO J242.9129+02.4856
PSO J242.9129+02.4856 is a main-sequence star of spectral type M4V in the constellation Serpens, 107.6 light-years from the Sun.
| Constellation | Serpens |
|---|---|
| Distance | 107.6 light-years (33.0 pc) |
| Apparent magnitude | magnitude 24.50 |
| Absolute magnitude | magnitude 21.91 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 2.71 × 10⁻⁶ L☉ |
| Radius | 0.0062 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 16h 11m 39.0s |
| Declination (J2000) | +2° 29′ 07″ |
| Space velocity (relative to the Sun) | 17.3 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 24.50. Visible from the whole Northern Hemisphere and south to latitude 88° S. It stands highest at midnight in May, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1918. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.9 million years.
The Sun seen from there
From a planet around PSO J242.9129+02.4856, the Sun would look like a star of magnitude 7.42, in the direction where our sky has the constellation Eridanus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- PSO J244.1180+06.3598 9.85 light-years
- GJ 3962 12.0 light-years
- HIP 78395 12.1 light-years
- PSO J244.6801+08.7185 12.2 light-years
- HIP 79137 13.0 light-years
- Gl 611.3 13.6 light-years
- Yed Posterior 13.8 light-years
- HIP 78999 15.5 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.