Star · ?
GJ 3793
GJ 3793 is a main-sequence star of spectral type ? in the constellation Coma Berenices, 186.5 light-years from the Sun.
| Constellation | Coma Berenices |
|---|---|
| Distance | 186.5 light-years (57.2 pc) |
| Apparent magnitude | magnitude 13.77 |
| Absolute magnitude | magnitude 9.98 |
| Spectral type | ? |
| Surface temperature | 3,650 K |
| Luminosity | 0.0392 L☉ |
| Radius | 0.495 R☉ |
| Mass | 0.445 M☉ (estimated) |
| Right ascension (J2000) | 13h 34m 49.0s |
| Declination (J2000) | +20° 11′ 36″ |
| Space velocity (relative to the Sun) | 51.9 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 13.77. Visible from the whole Northern Hemisphere and south to latitude 70° S. North of latitude 70° N 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 1840. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.3 million years.
The Sun seen from there
From a planet around GJ 3793, the Sun would look like a star of magnitude 8.62, in the direction where our sky has the constellation Cetus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 66915 7.26 light-years
- HIP 64836 13.3 light-years
- HIP 65085 15.9 light-years
- TOI-5739 16.3 light-years
- HIP 65725 18.0 light-years
- HIP 66655 19.3 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.