Star · M4V
WISE J094020.10-220820.5
WISE J094020.10-220820.5 is a main-sequence star of spectral type M4V in the constellation Hydra, 88.1 light-years from the Sun.
| Constellation | Hydra |
|---|---|
| Distance | 88.1 light-years (27.0 pc) |
| Apparent magnitude | magnitude 24.86 |
| Absolute magnitude | magnitude 22.70 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 1.30 × 10⁻⁶ L☉ |
| Radius | 0.0043 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 9h 40m 20.3s |
| Declination (J2000) | −22° 08′ 24″ |
| Space velocity (relative to the Sun) | 29.3 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 24.86. Visible from the whole Southern Hemisphere and north to latitude 68° N. South of latitude 68° S it never sets. It stands highest at midnight in February, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1938. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.6 million years.
The Sun seen from there
From a planet around WISE J094020.10-220820.5, the Sun would look like a star of magnitude 6.99, in the direction where our sky has the constellation Pegasus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- GJ 3581 13.8 light-years
- 2MASS J09490860-1545485 14.5 light-years
- GJ 1130A 15.7 light-years
- GJ 1130B 15.7 light-years
- HD 82943 15.9 light-years
- HIP 49376 16.0 light-years
- HIP 50696 16.2 light-years
- HIP 43969 16.3 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.