Star · ?
GJ 3907
GJ 3907 is a main-sequence star of spectral type ? in the constellation Boötes, 61.5 light-years from the Sun.
| Constellation | Boötes |
|---|---|
| Distance | 61.5 light-years (18.8 pc) |
| Apparent magnitude | magnitude 14.17 |
| Absolute magnitude | magnitude 12.79 |
| Spectral type | ? |
| Surface temperature | 3,480 K |
| Luminosity | 0.0039 L☉ |
| Radius | 0.172 R☉ |
| Mass | 0.17 M☉ (estimated) |
| Right ascension (J2000) | 15h 29m 43.7s |
| Declination (J2000) | +42° 52′ 44″ |
| Space velocity (relative to the Sun) | 67.9 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 14.17. Visible from the whole Northern Hemisphere and south to latitude 47° S. North of latitude 47° 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 1965. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.1 million years.
The Sun seen from there
From a planet around GJ 3907, the Sun would look like a star of magnitude 6.21, in the direction where our sky has the constellation Eridanus. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- GJ 3898 4.54 light-years
- 2MASS J15461461+4932114 7.78 light-years
- 14 Her 8.37 light-years
- SDSS J152039.82+354619.8 8.73 light-years
- CWISEP J153859.39+482659.1 9.14 light-years
- PSO J224.3820+47.4057 9.19 light-years
- GJ 3933 10.4 light-years
- χ Her 10.5 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.