Star · K4.5
GJ 143
GJ 143 is a main-sequence star of spectral type K4.5 in the constellation Reticulum, 53.3 light-years from the Sun. It is orbited by 2 confirmed exoplanet(s).
| Other names | Gl 143 · HIP 16069 |
|---|---|
| Constellation | Reticulum |
| Distance | 53.3 light-years (16.3 pc) |
| Apparent magnitude | magnitude 8.08 |
| Absolute magnitude | magnitude 7.01 |
| Spectral type | K4.5 |
| Surface temperature | 4,640 K |
| Luminosity | 0.206 L☉ |
| Radius | 0.695 R☉ |
| Mass | 0.73 M☉ |
| Age | 3.8 billion years |
| Metallicity [Fe/H] | 0.00 |
| Right ascension (J2000) | 3h 26m 59.2s |
| Declination (J2000) | −63° 29′ 56″ |
| Space velocity (relative to the Sun) | 68.1 km/s |
In the sky
Too faint for the naked eye (magnitude 8.08); binoculars will find it. Visible from the whole Southern Hemisphere and north to latitude 27° N. South of latitude 27° S it never sets. It stands highest at midnight in November, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1973. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 945 thousand years.
The Sun seen from there
From a planet around GJ 143, the Sun would look like a star of magnitude 5.90, in the direction where our sky has the constellation Draco. It would be visible to the naked eye.
Planets
- HD 21749 c 7.79-day orbit · 0.892 R⊕
- GJ 143 b 35.6-day orbit · 2.61 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- GJ 3243 5.19 light-years
- WISEA J030237.52-581740.3 5.75 light-years
- GJ 1049 7.61 light-years
- WISEPC J032337.53-602554.9 8.37 light-years
- GJ 3279 8.52 light-years
- WISEA J032309.12-590751.0 8.78 light-years
- GJ 3141 8.97 light-years
- HD 27442 9.92 light-years
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.