Star · ?
GJ 4178
GJ 4178 is a main-sequence star of spectral type ? in the constellation Indus, 80.9 light-years from the Sun.
| Constellation | Indus |
|---|---|
| Distance | 80.9 light-years (24.8 pc) |
| Apparent magnitude | magnitude 13.10 |
| Absolute magnitude | magnitude 11.13 |
| Spectral type | ? |
| Surface temperature | 3,650 K |
| Luminosity | 0.0137 L☉ |
| Radius | 0.292 R☉ |
| Mass | 0.293 M☉ (estimated) |
| Right ascension (J2000) | 21h 03m 15.2s |
| Declination (J2000) | −50° 22′ 56″ |
| Space velocity (relative to the Sun) | 57.2 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 13.10. Visible from the whole Southern Hemisphere and north to latitude 40° N. South of latitude 40° S it never sets. It stands highest at midnight in August, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1945. 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 GJ 4178, the Sun would look like a star of magnitude 6.80, in the direction where our sky has the constellation Ursa Major. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- η Ind 5.10 light-years
- WISEA J211157.85-521111.2 7.94 light-years
- GJ 4191 8.52 light-years
- HIP 103673 8.72 light-years
- WISEA J204928.59-443143.9 8.95 light-years
- Gl 828B 10.1 light-years
- Gl 828A 10.1 light-years
- Gl 826.2 10.7 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.