Star · ?
GJ 3819
GJ 3819 is a main-sequence star of spectral type ? in the constellation Hydra, 109.5 light-years from the Sun.
| Constellation | Hydra |
|---|---|
| Distance | 109.5 light-years (33.6 pc) |
| Apparent magnitude | magnitude 14.93 |
| Absolute magnitude | magnitude 12.30 |
| Spectral type | ? |
| Surface temperature | 7,340 K |
| Luminosity | 0.00103 L☉ |
| Radius | 0.0199 R☉ |
| Mass | 0.0954 M☉ (estimated) |
| Right ascension (J2000) | 13h 59m 07.5s |
| Declination (J2000) | −23° 33′ 33″ |
| Space velocity (relative to the Sun) | 53.8 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 14.93. Visible from the whole Southern Hemisphere and north to latitude 66° N. South of latitude 66° S it never sets. It stands highest at midnight in April, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1917. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.9 million years.
The Sun seen from there
From a planet around GJ 3819, the Sun would look like a star of magnitude 7.46, in the direction where our sky has the constellation Aries. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- π Hya 7.69 light-years
- HIP 66918 8.07 light-years
- TOI-4559 13.7 light-years
- HIP 70472 16.6 light-years
- HIP 68462 17.0 light-years
- HIP 67798 17.5 light-years
- HIP 66229 17.6 light-years
- PSO J218.5616-27.8952 17.6 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.