Star · K9V
WISEA J211807.07-321713.5
WISEA J211807.07-321713.5 is a main-sequence star of spectral type K9V in the constellation Microscopium, 155.4 light-years from the Sun.
| Constellation | Microscopium |
|---|---|
| Distance | 155.4 light-years (47.6 pc) |
| Apparent magnitude | magnitude 21.46 |
| Absolute magnitude | magnitude 18.07 |
| Spectral type | K9V |
| Surface temperature | 3,720 K |
| Luminosity | 2.06 × 10⁻⁵ L☉ |
| Radius | 0.0109 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 21h 18m 07.1s |
| Declination (J2000) | −32° 17′ 16″ |
| Space velocity (relative to the Sun) | 85.6 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 21.46. Visible from the whole Southern Hemisphere and north to latitude 58° N. South of latitude 58° 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 1871. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.8 million years.
The Sun seen from there
From a planet around WISEA J211807.07-321713.5, the Sun would look like a star of magnitude 8.22, in the direction where our sky has the constellation Cancer. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 106208 9.34 light-years
- HIP 105156 10.2 light-years
- HIP 105821 13.0 light-years
- ε Mic 13.6 light-years
- HIP 107042 14.7 light-years
- DENIS J2139136-352950 16.0 light-years
- HIP 106438 16.1 light-years
- HIP 104023 16.7 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.