Star · M3
GJ 3873
GJ 3873 is a main-sequence star of spectral type M3 in the constellation Boötes, 48.7 light-years from the Sun.
| Constellation | Boötes |
|---|---|
| Distance | 48.7 light-years (14.9 pc) |
| Apparent magnitude | magnitude 12.31 |
| Absolute magnitude | magnitude 11.44 |
| Spectral type | M3 |
| Surface temperature | 3,850 K |
| Luminosity | 0.00772 L☉ |
| Radius | 0.197 R☉ |
| Mass | 0.229 M☉ (estimated) |
| Right ascension (J2000) | 14h 54m 27.2s |
| Declination (J2000) | +35° 32′ 55″ |
| Space velocity (relative to the Sun) | 60.5 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 12.31. Visible from the whole Northern Hemisphere and south to latitude 54° S. North of latitude 54° 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 1977. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 864 thousand years.
The Sun seen from there
From a planet around GJ 3873, the Sun would look like a star of magnitude 5.70, 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):
- WISE J152305.10+312537.6 6.44 light-years
- σ Boo 6.79 light-years
- Gl 546 7.69 light-years
- SDSS J152039.82+354619.8 9.72 light-years
- 44 Boo 11.6 light-years
- GJ 3929 11.7 light-years
- GJ 3833 11.8 light-years
- Gl 575B 11.8 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.