Star · M4
Gl 166C
Gl 166C is a main-sequence star of spectral type M4 in the constellation Eridanus, 16.4 light-years from the Sun.
| Constellation | Eridanus |
|---|---|
| Distance | 16.4 light-years (5.01 pc) |
| Apparent magnitude | magnitude 11.17 |
| Absolute magnitude | magnitude 12.67 |
| Spectral type | M4 |
| Surface temperature | 3,550 K |
| Luminosity | 0.00384 L☉ |
| Radius | 0.163 R☉ |
| Mass | 0.169 M☉ (estimated) |
| Right ascension (J2000) | 4h 15m 22.3s |
| Declination (J2000) | −7° 39′ 28″ |
| Space velocity (relative to the Sun) | 107.4 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 11.17. Visible from the whole Southern Hemisphere and north to latitude 82° N. It stands highest at midnight in November, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 2010. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 290 thousand years.
The Sun seen from there
From a planet around Gl 166C, the Sun would look like a star of magnitude 3.33, in the direction where our sky has the constellation Hercules. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- Keid 0.01 light-years
- Gl 166B 0.02 light-years
- 2MASSI J0415195-093506 2.35 light-years
- GJ 3323 3.61 light-years
- Gl 205 6.28 light-years
- Ran 6.34 light-years
- GJ 3379 8.11 light-years
- Teegarden's Star 8.74 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.