Star · M4V
WISEA J214025.23-332707.4
WISEA J214025.23-332707.4 is a main-sequence star of spectral type M4V in the constellation Piscis Austrinus, 97.8 light-years from the Sun.
| Constellation | Piscis Austrinus |
|---|---|
| Distance | 97.8 light-years (30.0 pc) |
| Apparent magnitude | magnitude 27.46 |
| Absolute magnitude | magnitude 25.07 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 1.47 × 10⁻⁷ L☉ |
| Radius | 0.00144 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 21h 40m 24.9s |
| Declination (J2000) | −33° 27′ 01″ |
| Space velocity (relative to the Sun) | 95.1 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 27.46. Visible from the whole Southern Hemisphere and north to latitude 57° N. South of latitude 57° 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 1928. 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 WISEA J214025.23-332707.4, the Sun would look like a star of magnitude 7.22, in the direction where our sky has the constellation Leo Minor. 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.