Star · B5
GJ 3106
GJ 3106 is a giant star of spectral type B5 in the constellation Cassiopeia, 3,481 light-years from the Sun.
| Constellation | Cassiopeia |
|---|---|
| Distance | 3,481 light-years (1,067 pc) |
| Apparent magnitude | magnitude 10.07 |
| Absolute magnitude | magnitude −0.07 |
| Spectral type | B5 |
| Surface temperature | 6,530 K |
| Luminosity | 91.3 L☉ |
| Radius | 7.47 R☉ |
| Mass | 3.3 M☉ (estimated) |
| Right ascension (J2000) | 1h 41m 08.2s |
| Declination (J2000) | +63° 48′ 49″ |
| Space velocity (relative to the Sun) | 12.7 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 10.07. Visible from the whole Northern Hemisphere and south to latitude 26° S. North of latitude 26° N it never sets. 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 1456 BC. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 62 million years.
The Sun seen from there
From a planet around GJ 3106, the Sun would look like a star of magnitude 14.97, in the direction where our sky has the constellation Centaurus. It would be invisible to the naked eye.
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.