Star · M
GJ 3890
GJ 3890 is a main-sequence star of spectral type M in the constellation Draco, 55.7 light-years from the Sun.
| Other names | HIP 73734 |
|---|---|
| Constellation | Draco |
| Distance | 55.7 light-years (17.1 pc) |
| Apparent magnitude | magnitude 11.00 |
| Absolute magnitude | magnitude 9.84 |
| Spectral type | M |
| Surface temperature | 3,790 K |
| Luminosity | 0.0366 L☉ |
| Radius | 0.443 R☉ |
| Mass | 0.437 M☉ (estimated) |
| Right ascension (J2000) | 15h 04m 18.5s |
| Declination (J2000) | +60° 23′ 05″ |
| Space velocity (relative to the Sun) | 61.4 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 11.00. Visible from the whole Northern Hemisphere and south to latitude 30° S. North of latitude 30° 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 1970. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 988 thousand years.
The Sun seen from there
From a planet around GJ 3890, the Sun would look like a star of magnitude 5.99, in the direction where our sky has the constellation Horologium. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- WISEPC J145715.03+581510.2 4.33 light-years
- GJ 3861 6.07 light-years
- HIP 76315 8.92 light-years
- GJ 3815 9.98 light-years
- GJ 3942 11.2 light-years
- WISE J154459.27+584204.5 12.3 light-years
- Gl 549B 12.3 light-years
- GJ 3858 12.3 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.