Star · M4V
WISE J235447.80-814044.9
WISE J235447.80-814044.9 is a main-sequence star of spectral type M4V in the constellation Octans, 81.5 light-years from the Sun.
| Constellation | Octans |
|---|---|
| Distance | 81.5 light-years (25.0 pc) |
| Apparent magnitude | magnitude 25.11 |
| Absolute magnitude | magnitude 23.12 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 8.87 × 10⁻⁷ L☉ |
| Radius | 0.00355 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 23h 54m 47.2s |
| Declination (J2000) | −81° 40′ 46″ |
| Space velocity (relative to the Sun) | 16.8 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 25.11. Visible from the whole Southern Hemisphere and north to latitude 8° N. South of latitude 8° S it never sets.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1944. 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 WISE J235447.80-814044.9, the Sun would look like a star of magnitude 6.82, in the direction where our sky has the constellation Camelopardalis. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HD 199509 8.34 light-years
- Gl 67.1 8.50 light-years
- GJ 4317 9.48 light-years
- HD 207496 10.4 light-years
- HIP 110719 12.1 light-years
- HIP 110712 12.1 light-years
- SIPS J2150-7520B 12.4 light-years
- HIP 64690 15.1 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.