Star · ?
GJ 3919
GJ 3919 is a main-sequence star of spectral type ? in the constellation Corona Borealis, 55.2 light-years from the Sun.
| Constellation | Corona Borealis |
|---|---|
| Distance | 55.2 light-years (16.9 pc) |
| Apparent magnitude | magnitude 13.16 |
| Absolute magnitude | magnitude 12.02 |
| Spectral type | ? |
| Surface temperature | 3,590 K |
| Luminosity | 0.00655 L☉ |
| Radius | 0.209 R☉ |
| Mass | 0.213 M☉ (estimated) |
| Right ascension (J2000) | 15h 49m 38.4s |
| Declination (J2000) | +34° 48′ 58″ |
| Space velocity (relative to the Sun) | 77.5 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 13.16. Visible from the whole Northern Hemisphere and south to latitude 55° S. North of latitude 55° 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 1971. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 978 thousand years.
The Sun seen from there
From a planet around GJ 3919, the Sun would look like a star of magnitude 5.97, in the direction where our sky has the constellation Fornax. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- ρ CrB 3.37 light-years
- GJ 3929 3.93 light-years
- SDSS J152039.82+354619.8 6.17 light-years
- GJ 3923 7.41 light-years
- LHS 3154 7.45 light-years
- WISE J152305.10+312537.6 7.74 light-years
- η CrB 7.75 light-years
- χ Her 7.87 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.