Star · K5V
GJ 3620
GJ 3620 is a main-sequence star of spectral type K5V in the constellation Hydra, 69.4 light-years from the Sun.
| Other names | HIP 52708 |
|---|---|
| Constellation | Hydra |
| Distance | 69.4 light-years (21.3 pc) |
| Apparent magnitude | magnitude 9.37 |
| Absolute magnitude | magnitude 7.73 |
| Spectral type | K5V |
| Surface temperature | 4,380 K |
| Luminosity | 0.139 L☉ |
| Radius | 0.647 R☉ |
| Mass | 0.61 M☉ (estimated) |
| Right ascension (J2000) | 10h 46m 36.9s |
| Declination (J2000) | −24° 35′ 07″ |
| Space velocity (relative to the Sun) | 21.7 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 9.37. Visible from the whole Southern Hemisphere and north to latitude 65° N. South of latitude 65° 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 1957. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.2 million years.
The Sun seen from there
From a planet around GJ 3620, the Sun would look like a star of magnitude 6.47, in the direction where our sky has the constellation Pegasus. 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.