Star · G3
Gl 442A
Gl 442A is a main-sequence star of spectral type G3 in the constellation Centaurus, 30.4 light-years from the Sun.
| Other names | HIP 57443 |
|---|---|
| Constellation | Centaurus |
| Distance | 30.4 light-years (9.32 pc) |
| Apparent magnitude | magnitude 4.89 |
| Absolute magnitude | magnitude 5.04 |
| Spectral type | G3 |
| Surface temperature | 5,730 K |
| Luminosity | 0.901 L☉ |
| Radius | 0.964 R☉ |
| Mass | 0.974 M☉ (estimated) |
| Right ascension (J2000) | 11h 46m 31.1s |
| Declination (J2000) | −40° 30′ 00″ |
| Space velocity (relative to the Sun) | 72.0 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 4.89). 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 March, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1996. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 539 thousand years.
The Sun seen from there
From a planet around Gl 442A, the Sun would look like a star of magnitude 4.68, in the direction where our sky has the constellation Andromeda. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- Gl 442B 0.03 light-years
- WISE J111239.24-385700.7 3.83 light-years
- WISE J114156.71-332635.8 3.96 light-years
- Gl 432B 4.38 light-years
- Gl 432A 4.39 light-years
- GJ 433 4.39 light-years
- Gl 431 4.97 light-years
- Gl 480.1 6.63 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.