Star · K9V
GJ 9119B
GJ 9119B is a main-sequence star of spectral type K9V in the constellation Perseus, 127.5 light-years from the Sun.
| Constellation | Perseus |
|---|---|
| Distance | 127.5 light-years (39.1 pc) |
| Apparent magnitude | magnitude 12.87 |
| Absolute magnitude | magnitude 9.91 |
| Spectral type | K9V |
| Surface temperature | 3,810 K |
| Luminosity | 0.0336 L☉ |
| Radius | 0.421 R☉ |
| Mass | 0.428 M☉ (estimated) |
| Right ascension (J2000) | 3h 39m 47.1s |
| Declination (J2000) | +33° 28′ 35″ |
| Space velocity (relative to the Sun) | 7.2 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 12.87. Visible from the whole Northern Hemisphere and south to latitude 57° S. North of latitude 57° 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 the year 1898. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.3 million years.
The Sun seen from there
From a planet around GJ 9119B, the Sun would look like a star of magnitude 7.79, in the direction where our sky has the constellation Lupus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- GJ 9119A 0.69 light-years
- HIP 16747 6.07 light-years
- HIP 16709 7.37 light-years
- HIP 15609 8.83 light-years
- 2MASSW J0326137+295015 11.1 light-years
- HIP 14976 12.6 light-years
- HIP 17719 13.2 light-years
- HIP 19143 15.3 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.