Star · ?
GJ 3142
GJ 3142 is a main-sequence star of spectral type ? in the constellation Cetus, 49.8 light-years from the Sun.
| Constellation | Cetus |
|---|---|
| Distance | 49.8 light-years (15.3 pc) |
| Apparent magnitude | magnitude 13.50 |
| Absolute magnitude | magnitude 12.58 |
| Spectral type | ? |
| Surface temperature | 3,650 K |
| Luminosity | 0.00359 L☉ |
| Radius | 0.15 R☉ |
| Mass | 0.164 M☉ (estimated) |
| Right ascension (J2000) | 2h 12m 54.3s |
| Declination (J2000) | +0° 00′ 16″ |
| Space velocity (relative to the Sun) | 40.3 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 13.50. Visible from the whole Southern Hemisphere and north to latitude 90° N. It stands highest at midnight in October, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1976. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 883 thousand years.
The Sun seen from there
From a planet around GJ 3142, the Sun would look like a star of magnitude 5.75, in the direction where our sky has the constellation Virgo. 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.