Star · ?
GJ 3431B
GJ 3431B is a white dwarf of spectral type ? in the constellation Auriga, 78.6 light-years from the Sun.
| Constellation | Auriga |
|---|---|
| Distance | 78.6 light-years (24.1 pc) |
| Apparent magnitude | magnitude 15.68 |
| Absolute magnitude | magnitude 13.77 |
| Spectral type | ? |
| Surface temperature | 8,000 K |
| Luminosity | 2.80 × 10⁻⁴ L☉ |
| Radius | 0.012 R☉ |
| Mass | 0.6 M☉ (estimated) |
| Right ascension (J2000) | 7h 10m 14.4s |
| Declination (J2000) | +37° 40′ 16″ |
| Space velocity (relative to the Sun) | 41.1 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 15.68. Visible from the whole Northern Hemisphere and south to latitude 52° S. North of latitude 52° N it never sets. It stands highest at midnight in January, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1947. 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 3431B, the Sun would look like a star of magnitude 6.74, in the direction where our sky has the constellation Corona Australis. 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.