Star · M4V
WISEA J215550.34-195428.4
WISEA J215550.34-195428.4 is a main-sequence star of spectral type M4V in the constellation Capricornus, 120.7 light-years from the Sun.
| Constellation | Capricornus |
|---|---|
| Distance | 120.7 light-years (37.0 pc) |
| Apparent magnitude | magnitude 22.48 |
| Absolute magnitude | magnitude 19.64 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 2.19 × 10⁻⁵ L☉ |
| Radius | 0.0176 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 21h 55m 50.4s |
| Declination (J2000) | −19° 54′ 24″ |
| Space velocity (relative to the Sun) | 61.4 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 22.48. Visible from the whole Southern Hemisphere and north to latitude 70° N. South of latitude 70° 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 1905. 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 WISEA J215550.34-195428.4, the Sun would look like a star of magnitude 7.67, in the direction where our sky has the constellation Leo. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 107805 9.24 light-years
- HIP 107877 12.6 light-years
- 42 Cap 14.5 light-years
- PSO J336.9036-18.9148 16.8 light-years
- Gl 851.3 16.8 light-years
- HIP 108468 17.2 light-years
- HIP 108065 19.2 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.