Star · K2
GJ 9126
GJ 9126 is a supergiant star of spectral type K2 in the constellation Taurus, 2,509 light-years from the Sun.
| Constellation | Taurus |
|---|---|
| Distance | 2,509 light-years (769.2 pc) |
| Apparent magnitude | magnitude 8.85 |
| Absolute magnitude | magnitude −0.58 |
| Spectral type | K2 |
| Surface temperature | 3,500 K |
| Luminosity | 835 L☉ |
| Radius | 78.5 R☉ |
| Mass | 6.21 M☉ (estimated) |
| Right ascension (J2000) | 3h 44m 20.2s |
| Declination (J2000) | +24° 52′ 30″ |
| Space velocity (relative to the Sun) | 21.6 km/s |
In the sky
Too faint for the naked eye (magnitude 8.85); binoculars will find it. Visible from the whole Northern Hemisphere and south to latitude 65° S. North of latitude 65° N it never sets. It stands highest at midnight in November, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around 484 BC. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 45 million years.
The Sun seen from there
From a planet around GJ 9126, the Sun would look like a star of magnitude 14.26, in the direction where our sky has the constellation Libra. 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.