Star · M4.5 V
LHS 1140
LHS 1140 is a main-sequence star of spectral type M4.5 V in the constellation Cetus, 48.8 light-years from the Sun. It is orbited by 2 confirmed exoplanet(s).
| Other names | GJ 3053 |
|---|---|
| Constellation | Cetus |
| Distance | 48.8 light-years (15.0 pc) |
| Apparent magnitude | magnitude 14.20 |
| Absolute magnitude | magnitude 13.32 |
| Spectral type | M4.5 V |
| Surface temperature | 3,100 K |
| Luminosity | 0.0038 L☉ |
| Radius | 0.216 R☉ |
| Mass | 0.184 M☉ |
| Age | 5.0 billion years |
| Metallicity [Fe/H] | -0.15 |
| Right ascension (J2000) | 0h 45m 00.2s |
| Declination (J2000) | −15° 16′ 22″ |
| Space velocity (relative to the Sun) | 48.0 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 14.20. Visible from the whole Southern Hemisphere and north to latitude 75° N. South of latitude 75° S it never sets. It stands highest at midnight in September, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1977. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 866 thousand years.
The Sun seen from there
From a planet around LHS 1140, the Sun would look like a star of magnitude 5.71, in the direction where our sky has the constellation Coma Berenices. It would be visible to the naked eye.
Planets
- LHS 1140 c 3.78-day orbit · 1.27 R⊕
- LHS 1140 b 24.7-day orbit · 1.73 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.