Star · ?
GJ 3955
GJ 3955 is a main-sequence star of spectral type ? in the constellation Hercules, 116.9 light-years from the Sun.
| Constellation | Hercules |
|---|---|
| Distance | 116.9 light-years (35.8 pc) |
| Apparent magnitude | magnitude 13.18 |
| Absolute magnitude | magnitude 10.41 |
| Spectral type | ? |
| Surface temperature | 3,650 K |
| Luminosity | 0.0265 L☉ |
| Radius | 0.408 R☉ |
| Mass | 0.391 M☉ (estimated) |
| Right ascension (J2000) | 16h 28m 02.5s |
| Declination (J2000) | +15° 33′ 52″ |
| Space velocity (relative to the Sun) | 52.3 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 13.18. Visible from the whole Northern Hemisphere and south to latitude 74° S. North of latitude 74° N it never sets. It stands highest at midnight in May, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1909. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.1 million years.
The Sun seen from there
From a planet around GJ 3955, the Sun would look like a star of magnitude 7.60, 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):
- HIP 81730 11.2 light-years
- 2MASS J16304139+0938446 13.7 light-years
- HIP 79165 13.7 light-years
- SIMP J16055741+1931115 14.1 light-years
- HIP 78864 14.9 light-years
- HIP 80262 15.6 light-years
- HIP 81998 16.4 light-years
- Gl 647 16.6 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.