Star · K8
GJ 9251B
GJ 9251B is a main-sequence star of spectral type K8 in the constellation Cancer, 136.2 light-years from the Sun.
| Constellation | Cancer |
|---|---|
| Distance | 136.2 light-years (41.8 pc) |
| Apparent magnitude | magnitude 10.86 |
| Absolute magnitude | magnitude 7.76 |
| Spectral type | K8 |
| Surface temperature | 4,150 K |
| Luminosity | 0.165 L☉ |
| Radius | 0.784 R☉ |
| Mass | 0.637 M☉ (estimated) |
| Right ascension (J2000) | 8h 07m 09.2s |
| Declination (J2000) | +7° 23′ 04″ |
| Space velocity (relative to the Sun) | 26.5 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 10.86. Visible from the whole Northern Hemisphere and south to latitude 83° S. 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 1890. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.4 million years.
The Sun seen from there
From a planet around GJ 9251B, the Sun would look like a star of magnitude 7.93, in the direction where our sky has the constellation Aquila. 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.