Star · ?
GJ 4222
GJ 4222 is a main-sequence star of spectral type ? in the constellation Indus, 54.5 light-years from the Sun.
| Constellation | Indus |
|---|---|
| Distance | 54.5 light-years (16.7 pc) |
| Apparent magnitude | magnitude 12.50 |
| Absolute magnitude | magnitude 11.39 |
| Spectral type | ? |
| Surface temperature | 3,650 K |
| Luminosity | 0.0108 L☉ |
| Radius | 0.26 R☉ |
| Mass | 0.264 M☉ (estimated) |
| Right ascension (J2000) | 21h 49m 32.3s |
| Declination (J2000) | −63° 07′ 01″ |
| Space velocity (relative to the Sun) | 41.7 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 12.50. 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 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 1971. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 967 thousand years.
The Sun seen from there
From a planet around GJ 4222, the Sun would look like a star of magnitude 5.94, in the direction where our sky has the constellation Ursa Major. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.