Star · G2V
Gl 580B
Gl 580B is a main-sequence star of spectral type G2V in the constellation Serpens, 56.3 light-years from the Sun.
| Constellation | Serpens |
|---|---|
| Distance | 56.3 light-years (17.3 pc) |
| Apparent magnitude | magnitude 7.35 |
| Absolute magnitude | magnitude 6.16 |
| Spectral type | G2V |
| Surface temperature | 5,780 K |
| Luminosity | 0.318 L☉ |
| Radius | 0.562 R☉ |
| Mass | 0.751 M☉ (estimated) |
| Right ascension (J2000) | 15h 13m 50.4s |
| Declination (J2000) | −1° 21′ 08″ |
| Space velocity (relative to the Sun) | 112.2 km/s |
In the sky
Too faint for the naked eye (magnitude 7.35); binoculars will find it. Visible from the whole Southern Hemisphere and north to latitude 89° N. It stands highest at midnight in May, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1970. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 999 thousand years.
The Sun seen from there
From a planet around Gl 580B, the Sun would look like a star of magnitude 6.02, in the direction where our sky has the constellation Cetus. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- Gl 580A 0.00 light-years
- HIP 74702 5.16 light-years
- SDSS J151603.03+025928.9 6.80 light-years
- Gl 583 7.42 light-years
- DENIS-P J153941.96-052042.4 7.48 light-years
- GJ 1185 7.50 light-years
- GJ 3918 9.18 light-years
- Gl 576 9.54 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.