Star · K0
GJ 9758
GJ 9758 is a main-sequence star of spectral type K0 in the constellation Cepheus, 118.2 light-years from the Sun.
| Other names | HIP 107700 |
|---|---|
| Constellation | Cepheus |
| Distance | 118.2 light-years (36.2 pc) |
| Apparent magnitude | magnitude 8.97 |
| Absolute magnitude | magnitude 6.17 |
| Spectral type | K0 |
| Surface temperature | 5,110 K |
| Luminosity | 0.381 L☉ |
| Radius | 0.789 R☉ |
| Mass | 0.786 M☉ (estimated) |
| Right ascension (J2000) | 21h 49m 01.1s |
| Declination (J2000) | +75° 00′ 03″ |
| Space velocity (relative to the Sun) | 30.9 km/s |
In the sky
Too faint for the naked eye (magnitude 8.97); binoculars will find it. Visible from the whole Northern Hemisphere and south to latitude 15° S. North of latitude 15° N it never sets.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1908. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.1 million years.
The Sun seen from there
From a planet around GJ 9758, the Sun would look like a star of magnitude 7.63, in the direction where our sky has the constellation Carina. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- 16 Cep 4.37 light-years
- HIP 105557 10.0 light-years
- HIP 102791 11.3 light-years
- HIP 111494 11.9 light-years
- HIP 107457 12.1 light-years
- GJ 9725 13.5 light-years
- HIP 109474 15.5 light-years
- HIP 116845 15.7 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.