Star · F0IV
GJ 9143
GJ 9143 is a subgiant star of spectral type F0IV in the constellation Eridanus, 143.9 light-years from the Sun.
| Other names | HIP 19095 |
|---|---|
| Constellation | Eridanus |
| Distance | 143.9 light-years (44.1 pc) |
| Apparent magnitude | magnitude 5.59 |
| Absolute magnitude | magnitude 2.37 |
| Spectral type | F0IV |
| Surface temperature | 7,310 K |
| Luminosity | 9.71 L☉ |
| Radius | 1.94 R☉ |
| Mass | 1.77 M☉ (estimated) |
| Right ascension (J2000) | 4h 05m 37.4s |
| Declination (J2000) | −27° 39′ 07″ |
| Space velocity (relative to the Sun) | 80.6 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.59). Visible from the whole Southern Hemisphere and north to latitude 62° N. South of latitude 62° 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 1882. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.6 million years.
The Sun seen from there
From a planet around GJ 9143, the Sun would look like a star of magnitude 8.05, in the direction where our sky has the constellation Corona Borealis. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 19232 5.87 light-years
- GJ 3258 14.1 light-years
- HIP 17276 16.6 light-years
- HIP 20478 17.0 light-years
- HIP 17621 17.5 light-years
- HIP 17838 17.7 light-years
- HIP 18824 18.9 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.