Star · G5
GJ 4233
GJ 4233 is a main-sequence star of spectral type G5 in the constellation Cygnus, 125.4 light-years from the Sun.
| Other names | HIP 107958 |
|---|---|
| Constellation | Cygnus |
| Distance | 125.4 light-years (38.5 pc) |
| Apparent magnitude | magnitude 8.24 |
| Absolute magnitude | magnitude 5.31 |
| Spectral type | G5 |
| Surface temperature | 5,530 K |
| Luminosity | 0.733 L☉ |
| Radius | 0.931 R☉ |
| Mass | 0.925 M☉ (estimated) |
| Right ascension (J2000) | 21h 52m 19.7s |
| Declination (J2000) | +39° 48′ 06″ |
| Space velocity (relative to the Sun) | 100.5 km/s |
In the sky
Too faint for the naked eye (magnitude 8.24); binoculars will find it. Visible from the whole Northern Hemisphere and south to latitude 50° S. North of latitude 50° N it never sets. It stands highest at midnight in August, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1901. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.2 million years.
The Sun seen from there
From a planet around GJ 4233, the Sun would look like a star of magnitude 7.76, in the direction where our sky has the constellation Antlia. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- ρ Cyg 14.7 light-years
- HIP 108391 16.2 light-years
- HIP 108774 17.6 light-years
- HIP 106305 18.6 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.