Star · M4V
WISEAR J154025.77-113940.8
WISEAR J154025.77-113940.8 is a main-sequence star of spectral type M4V in the constellation Libra, 117.4 light-years from the Sun.
| Constellation | Libra |
|---|---|
| Distance | 117.4 light-years (36.0 pc) |
| Apparent magnitude | magnitude 27.07 |
| Absolute magnitude | magnitude 24.29 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 3.02 × 10⁻⁷ L☉ |
| Radius | 0.00207 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 15h 40m 26.3s |
| Declination (J2000) | −11° 39′ 36″ |
| Space velocity (relative to the Sun) | 150.4 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 27.07. Visible from the whole Southern Hemisphere and north to latitude 78° N. South of latitude 78° S it never sets. It stands highest at midnight in May, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1909. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.1 million years.
The Sun seen from there
From a planet around WISEAR J154025.77-113940.8, the Sun would look like a star of magnitude 7.61, in the direction where our sky has the constellation Taurus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 76603 6.27 light-years
- HIP 77707 8.03 light-years
- HIP 76203 13.4 light-years
- HIP 75762 14.7 light-years
- SIMP J15102256-1147125 15.0 light-years
- HIP 78336 16.7 light-years
- HIP 76768 17.0 light-years
- HIP 74771 17.1 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.