Star · M3
Gl 813
Gl 813 is a main-sequence star of spectral type M3 in the constellation Vulpecula, 47.1 light-years from the Sun.
| Other names | HIP 103441 |
|---|---|
| Constellation | Vulpecula |
| Distance | 47.1 light-years (14.4 pc) |
| Apparent magnitude | magnitude 11.98 |
| Absolute magnitude | magnitude 11.18 |
| Spectral type | M3 |
| Surface temperature | 3,740 K |
| Luminosity | 0.0113 L☉ |
| Radius | 0.253 R☉ |
| Mass | 0.27 M☉ (estimated) |
| Right ascension (J2000) | 20h 57m 25.4s |
| Declination (J2000) | +22° 21′ 46″ |
| Space velocity (relative to the Sun) | 62.6 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 11.98. Visible from the whole Northern Hemisphere and south to latitude 68° S. North of latitude 68° N 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 1979. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 835 thousand years.
The Sun seen from there
From a planet around Gl 813, the Sun would look like a star of magnitude 5.63, in the direction where our sky has the constellation Pyxis. 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.