Star · G3V
Gl 431.1B
Gl 431.1B is a main-sequence star of spectral type G3V in the constellation Ursa Major, 92.2 light-years from the Sun.
| Constellation | Ursa Major |
|---|---|
| Distance | 92.2 light-years (28.3 pc) |
| Apparent magnitude | magnitude 7.10 |
| Absolute magnitude | magnitude 4.84 |
| Spectral type | G3V |
| Surface temperature | 5,780 K |
| Luminosity | 1.07 L☉ |
| Radius | 1.03 R☉ |
| Mass | 1.02 M☉ (estimated) |
| Right ascension (J2000) | 11h 32m 21.9s |
| Declination (J2000) | +61° 04′ 59″ |
| Space velocity (relative to the Sun) | 9.3 km/s |
In the sky
Too faint for the naked eye (magnitude 7.10); binoculars will find it. Visible from the whole Northern Hemisphere and south to latitude 29° S. North of latitude 29° N it never sets. It stands highest at midnight in March, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1934. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.6 million years.
The Sun seen from there
From a planet around Gl 431.1B, the Sun would look like a star of magnitude 7.09, in the direction where our sky has the constellation Tucana. It would be invisible 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.