Star · G2V
GJ 9819
GJ 9819 is a main-sequence star of spectral type G2V in the constellation Tucana, 128.6 light-years from the Sun.
| Other names | HIP 115087 |
|---|---|
| Constellation | Tucana |
| Distance | 128.6 light-years (39.4 pc) |
| Apparent magnitude | magnitude 7.50 |
| Absolute magnitude | magnitude 4.52 |
| Spectral type | G2V |
| Surface temperature | 5,850 K |
| Luminosity | 1.43 L☉ |
| Radius | 1.16 R☉ |
| Mass | 1.09 M☉ (estimated) |
| Right ascension (J2000) | 23h 18m 36.7s |
| Declination (J2000) | −58° 18′ 23″ |
| Space velocity (relative to the Sun) | 52.9 km/s |
In the sky
Too faint for the naked eye (magnitude 7.50); binoculars will find it. Visible from the whole Southern Hemisphere and north to latitude 32° N. South of latitude 32° S it never sets. It stands highest at midnight in September, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1897. 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 9819, the Sun would look like a star of magnitude 7.81, in the direction where our sky has the constellation Ursa Major. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 116395 8.53 light-years
- HD 215497 11.2 light-years
- HIP 112703 11.7 light-years
- GJ 4331 13.1 light-years
- HIP 116937 14.1 light-years
- HIP 114736 14.2 light-years
- 2MASS J23225299-6151275 15.2 light-years
- HIP 114427 16.2 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.