Star · K9V
2MASSW J2206450-421721
2MASSW J2206450-421721 is a main-sequence star of spectral type K9V in the constellation Grus, 96.1 light-years from the Sun.
| Constellation | Grus |
|---|---|
| Distance | 96.1 light-years (29.5 pc) |
| Apparent magnitude | magnitude 21.80 |
| Absolute magnitude | magnitude 19.45 |
| Spectral type | K9V |
| Surface temperature | 3,770 K |
| Luminosity | 5.34 × 10⁻⁶ L☉ |
| Radius | 0.0054 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 22h 06m 45.2s |
| Declination (J2000) | −42° 17′ 24″ |
| Space velocity (relative to the Sun) | 31.5 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 21.80. Visible from the whole Southern Hemisphere and north to latitude 48° N. South of latitude 48° 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 1930. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.7 million years.
The Sun seen from there
From a planet around 2MASSW J2206450-421721, the Sun would look like a star of magnitude 7.18, in the direction where our sky has the constellation Ursa Major. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.