Star · K9V
2MASSW J1122362-391605
2MASSW J1122362-391605 is a main-sequence star of spectral type K9V in the constellation Centaurus, 104.9 light-years from the Sun.
| Constellation | Centaurus |
|---|---|
| Distance | 104.9 light-years (32.1 pc) |
| Apparent magnitude | magnitude 21.96 |
| Absolute magnitude | magnitude 19.42 |
| Spectral type | K9V |
| Surface temperature | 3,700 K |
| Luminosity | 6.07 × 10⁻⁶ L☉ |
| Radius | 0.00599 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 11h 22m 36.3s |
| Declination (J2000) | −39° 16′ 09″ |
| Space velocity (relative to the Sun) | 29.2 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 21.96. Visible from the whole Southern Hemisphere and north to latitude 51° N. South of latitude 51° S it never sets. It stands highest at midnight in March, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1921. 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 2MASSW J1122362-391605, the Sun would look like a star of magnitude 7.37, in the direction where our sky has the constellation Andromeda. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 56128 10.4 light-years
- HIP 54287 10.9 light-years
- HIP 57021 11.3 light-years
- HIP 57688 11.9 light-years
- HIP 53776 12.1 light-years
- HIP 58401 13.6 light-years
- HIP 53818 16.1 light-years
- HIP 55013 16.6 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.