Star · ?
GJ 3875
GJ 3875 is a main-sequence star of spectral type ? in the constellation Boötes, 156.2 light-years from the Sun.
| Constellation | Boötes |
|---|---|
| Distance | 156.2 light-years (47.9 pc) |
| Apparent magnitude | magnitude 14.67 |
| Absolute magnitude | magnitude 11.27 |
| Spectral type | ? |
| Surface temperature | 3,650 K |
| Luminosity | 0.012 L☉ |
| Radius | 0.274 R☉ |
| Mass | 0.277 M☉ (estimated) |
| Right ascension (J2000) | 14h 54m 55.6s |
| Declination (J2000) | +41° 08′ 45″ |
| Space velocity (relative to the Sun) | 61.9 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 14.67. Visible from the whole Northern Hemisphere and south to latitude 49° S. North of latitude 49° 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 1870. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.8 million years.
The Sun seen from there
From a planet around GJ 3875, the Sun would look like a star of magnitude 8.23, in the direction where our sky has the constellation Eridanus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 73725 9.65 light-years
- 40 Boo 11.3 light-years
- HIP 73765 11.9 light-years
- HIP 73302 13.1 light-years
- Merga 13.8 light-years
- HIP 72145 15.3 light-years
- SDSS J143251.01+363643.6 17.0 light-years
- HIP 74135 18.8 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.