Star · G5
GJ 2057
GJ 2057 is a main-sequence star of spectral type G5 in the constellation Gemini, 78.4 light-years from the Sun.
| Other names | HIP 35872 |
|---|---|
| Constellation | Gemini |
| Distance | 78.4 light-years (24.0 pc) |
| Apparent magnitude | magnitude 8.19 |
| Absolute magnitude | magnitude 6.29 |
| Spectral type | G5 |
| Surface temperature | 4,840 K |
| Luminosity | 0.388 L☉ |
| Radius | 0.885 R☉ |
| Mass | 0.789 M☉ (estimated) |
| Right ascension (J2000) | 7h 23m 47.0s |
| Declination (J2000) | +12° 57′ 53″ |
| Space velocity (relative to the Sun) | 62.1 km/s |
In the sky
Too faint for the naked eye (magnitude 8.19); binoculars will find it. Visible from the whole Northern Hemisphere and south to latitude 77° S. North of latitude 77° N it never sets. It stands highest at midnight in January, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1948. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.4 million years.
The Sun seen from there
From a planet around GJ 2057, the Sun would look like a star of magnitude 6.73, in the direction where our sky has the constellation Sagittarius. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- GJ 3448B 7.05 light-years
- WISEA J065958.55+171710.9 10.7 light-years
- Gl 276 11.1 light-years
- GJ 3447A 11.9 light-years
- GJ 3413 13.1 light-years
- GJ 3437 13.3 light-years
- 2MASS J07415784+0531568 14.0 light-years
- GJ 3453 15.0 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.