Star · ?
GJ 3657
GJ 3657 is a main-sequence star of spectral type ? in the constellation Leo, 52.9 light-years from the Sun.
| Constellation | Leo |
|---|---|
| Distance | 52.9 light-years (16.2 pc) |
| Apparent magnitude | magnitude 15.14 |
| Absolute magnitude | magnitude 14.09 |
| Spectral type | ? |
| Surface temperature | 3,340 K |
| Luminosity | 0.00152 L☉ |
| Radius | 0.116 R☉ |
| Mass | 0.113 M☉ (estimated) |
| Right ascension (J2000) | 11h 23m 09.0s |
| Declination (J2000) | +25° 53′ 41″ |
| Space velocity (relative to the Sun) | 81.6 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 15.14. Visible from the whole Northern Hemisphere and south to latitude 64° S. North of latitude 64° N 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 1973. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 938 thousand years.
The Sun seen from there
From a planet around GJ 3657, the Sun would look like a star of magnitude 5.88, in the direction where our sky has the constellation Sculptor. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.