Star · G4V
GJ 9155A
GJ 9155A is a main-sequence star of spectral type G4V in the constellation Dorado, 89.8 light-years from the Sun.
| Other names | HIP 20552 |
|---|---|
| Constellation | Dorado |
| Distance | 89.8 light-years (27.5 pc) |
| Apparent magnitude | magnitude 6.28 |
| Absolute magnitude | magnitude 4.08 |
| Spectral type | G4V |
| Surface temperature | 5,750 K |
| Luminosity | 2.18 L☉ |
| Radius | 1.49 R☉ |
| Mass | 1.21 M☉ (estimated) |
| Right ascension (J2000) | 4h 24m 12.2s |
| Declination (J2000) | −57° 04′ 17″ |
| Space velocity (relative to the Sun) | 17.6 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.28). Visible from the whole Southern Hemisphere and north to latitude 33° N. South of latitude 33° S 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 1936. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.6 million years.
The Sun seen from there
From a planet around GJ 9155A, the Sun would look like a star of magnitude 7.03, in the direction where our sky has the constellation Draco. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- GJ 9155B 0.01 light-years
- WISEA J042449.21-595905.6 4.84 light-years
- HIP 19333 5.05 light-years
- HIP 21960 5.73 light-years
- GJ 3268 6.04 light-years
- WISEA J034858.75-562017.8 7.77 light-years
- HIP 23309 7.96 light-years
- HIP 18844 9.19 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.