Star · K9V
2MASS J21015233-2944050
2MASS J21015233-2944050 is a main-sequence star of spectral type K9V in the constellation Microscopium, 178.4 light-years from the Sun.
| Constellation | Microscopium |
|---|---|
| Distance | 178.4 light-years (54.7 pc) |
| Apparent magnitude | magnitude 21.42 |
| Absolute magnitude | magnitude 17.73 |
| Spectral type | K9V |
| Surface temperature | 3,770 K |
| Luminosity | 2.64 × 10⁻⁵ L☉ |
| Radius | 0.012 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 21h 01m 52.4s |
| Declination (J2000) | −29° 44′ 05″ |
| Space velocity (relative to the Sun) | 13.0 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 21.42. Visible from the whole Southern Hemisphere and north to latitude 60° N. South of latitude 60° 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 1848. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.2 million years.
The Sun seen from there
From a planet around 2MASS J21015233-2944050, the Sun would look like a star of magnitude 8.52, 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):
- PSO J313.6-027.7 8.99 light-years
- HIP 104071 10.2 light-years
- HIP 102963 12.7 light-years
- HIP 105041 13.2 light-years
- HIP 102505 13.8 light-years
- HIP 102507 13.8 light-years
- ε Mic 15.9 light-years
- HIP 103860 16.1 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.