Star · ?
GJ 3980
GJ 3980 is a main-sequence star of spectral type ? in the constellation Hercules, 86.2 light-years from the Sun.
| Constellation | Hercules |
|---|---|
| Distance | 86.2 light-years (26.4 pc) |
| Apparent magnitude | magnitude 14.35 |
| Absolute magnitude | magnitude 12.24 |
| Spectral type | ? |
| Surface temperature | 3,650 K |
| Luminosity | 0.00491 L☉ |
| Radius | 0.175 R☉ |
| Mass | 0.188 M☉ (estimated) |
| Right ascension (J2000) | 16h 57m 22.7s |
| Declination (J2000) | +13° 28′ 07″ |
| Space velocity (relative to the Sun) | 28.3 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 14.35. 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 June, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1940. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.5 million years.
The Sun seen from there
From a planet around GJ 3980, the Sun would look like a star of magnitude 6.94, in the direction where our sky has the constellation Eridanus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- κ Oph 6.44 light-years
- 2MASS J16573454+1054233 8.54 light-years
- Gl 640 9.32 light-years
- WISEA J162852.64+160421.0 11.3 light-years
- PSO J246.4222+15.4698 12.2 light-years
- HIP 80539 12.3 light-years
- PSO J258.2413+06.7612 12.7 light-years
- GJ 1201 13.0 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.