Star · M4
GJ 3149B
GJ 3149B is a main-sequence star of spectral type M4 in the constellation Fornax, 37.1 light-years from the Sun.
| Constellation | Fornax |
|---|---|
| Distance | 37.1 light-years (11.4 pc) |
| Apparent magnitude | magnitude 13.00 |
| Absolute magnitude | magnitude 12.72 |
| Spectral type | M4 |
| Surface temperature | 3,820 K |
| Luminosity | 0.00246 L☉ |
| Radius | 0.113 R☉ |
| Mass | 0.139 M☉ (estimated) |
| Right ascension (J2000) | 2h 16m 34.5s |
| Declination (J2000) | −30° 58′ 04″ |
| Space velocity (relative to the Sun) | 38.2 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 13.00. Visible from the whole Southern Hemisphere and north to latitude 59° N. South of latitude 59° S it never sets. It stands highest at midnight in October, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1989. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 657 thousand years.
The Sun seen from there
From a planet around GJ 3149B, the Sun would look like a star of magnitude 5.11, in the direction where our sky has the constellation Boötes. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- WISEPC J022322.39-293258.1 3.65 light-years
- GJ 1050 4.03 light-years
- Gl 91 4.76 light-years
- 2MASSI J0243137-245329 5.84 light-years
- Gl 95 5.92 light-years
- Gl 79 6.48 light-years
- GJ 3135 6.63 light-years
- GJ 3148A 6.67 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.