Star · G8IV
GJ 9259
GJ 9259 is a subgiant star of spectral type G8IV in the constellation Puppis, 154.0 light-years from the Sun.
| Other names | HIP 40227 |
|---|---|
| Constellation | Puppis |
| Distance | 154.0 light-years (47.2 pc) |
| Apparent magnitude | magnitude 9.39 |
| Absolute magnitude | magnitude 6.02 |
| Spectral type | G8IV |
| Surface temperature | 5,220 K |
| Luminosity | 0.421 L☉ |
| Radius | 0.793 R☉ |
| Mass | 0.805 M☉ (estimated) |
| Right ascension (J2000) | 8h 12m 56.9s |
| Declination (J2000) | −40° 32′ 22″ |
| Space velocity (relative to the Sun) | 71.7 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 9.39. Visible from the whole Southern Hemisphere and north to latitude 49° N. South of latitude 49° S it never sets. 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 1872. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.7 million years.
The Sun seen from there
From a planet around GJ 9259, the Sun would look like a star of magnitude 8.20, in the direction where our sky has the constellation Cygnus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 39102 9.48 light-years
- HIP 41984 11.2 light-years
- HIP 38250 12.5 light-years
- HIP 39720 12.5 light-years
- HIP 40174 13.3 light-years
- HIP 42215 13.4 light-years
- HIP 42042 14.8 light-years
- HIP 39470 17.5 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.