Star · M4V
2MASS J22092183-2711329
2MASS J22092183-2711329 is a main-sequence star of spectral type M4V in the constellation Piscis Austrinus, 79.6 light-years from the Sun.
| Constellation | Piscis Austrinus |
|---|---|
| Distance | 79.6 light-years (24.4 pc) |
| Apparent magnitude | magnitude 23.29 |
| Absolute magnitude | magnitude 21.35 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 4.52 × 10⁻⁶ L☉ |
| Radius | 0.008 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 22h 09m 21.8s |
| Declination (J2000) | −27° 11′ 33″ |
| Space velocity (relative to the Sun) | 15.9 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 23.29. Visible from the whole Southern Hemisphere and north to latitude 63° N. South of latitude 63° 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 1946. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.4 million years.
The Sun seen from there
From a planet around 2MASS J22092183-2711329, the Sun would look like a star of magnitude 6.77, 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):
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.