Star · K2
Gl 39
Gl 39 is a main-sequence star of spectral type K2 in the constellation Pisces, 72.4 light-years from the Sun.
| Other names | HIP 3998 |
|---|---|
| Constellation | Pisces |
| Distance | 72.4 light-years (22.2 pc) |
| Apparent magnitude | magnitude 9.22 |
| Absolute magnitude | magnitude 7.49 |
| Spectral type | K2 |
| Surface temperature | 4,320 K |
| Luminosity | 0.182 L☉ |
| Radius | 0.761 R☉ |
| Mass | 0.653 M☉ (estimated) |
| Right ascension (J2000) | 0h 51m 21.8s |
| Declination (J2000) | +18° 44′ 21″ |
| Space velocity (relative to the Sun) | 29.6 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 9.22. Visible from the whole Northern Hemisphere and south to latitude 71° S. North of latitude 71° N it never sets. It stands highest at midnight in October, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1954. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.3 million years.
The Sun seen from there
From a planet around Gl 39, the Sun would look like a star of magnitude 6.56, in the direction where our sky has the constellation Corvus. It would be invisible 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.