Star · G5IV
GJ 1021
GJ 1021 is a subgiant star of spectral type G5IV in the constellation Phoenix, 49.1 light-years from the Sun.
| Other names | HIP 3583 |
|---|---|
| Constellation | Phoenix |
| Distance | 49.1 light-years (15.0 pc) |
| Apparent magnitude | magnitude 5.80 |
| Absolute magnitude | magnitude 4.91 |
| Spectral type | G5IV |
| Surface temperature | 5,830 K |
| Luminosity | 0.996 L☉ |
| Radius | 0.977 R☉ |
| Mass | 0.999 M☉ (estimated) |
| Right ascension (J2000) | 0h 45m 45.6s |
| Declination (J2000) | −47° 33′ 07″ |
| Space velocity (relative to the Sun) | 17.9 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.80). Visible from the whole Southern Hemisphere and north to latitude 42° N. South of latitude 42° 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 1977. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 871 thousand years.
The Sun seen from there
From a planet around GJ 1021, the Sun would look like a star of magnitude 5.72, in the direction where our sky has the constellation Canes Venatici. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- ν Phe 4.75 light-years
- WISE J003231.09-494651.4 5.22 light-years
- Gl 32A 5.41 light-years
- Gl 32B 5.42 light-years
- CWISE J011952.82-450231.2 5.47 light-years
- WISE J001505.87-461517.6 7.17 light-years
- GJ 3082 8.76 light-years
- CWISE J234426.81-475502.6 8.78 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.