Star · M2
GJ 3189
GJ 3189 is a main-sequence star of spectral type M2 in the constellation Eridanus, 37.5 light-years from the Sun.
| Constellation | Eridanus |
|---|---|
| Distance | 37.5 light-years (11.5 pc) |
| Apparent magnitude | magnitude 12.67 |
| Absolute magnitude | magnitude 12.37 |
| Spectral type | M2 |
| Surface temperature | 3,480 K |
| Luminosity | 0.00578 L☉ |
| Radius | 0.209 R☉ |
| Mass | 0.202 M☉ (estimated) |
| Right ascension (J2000) | 2h 58m 09.9s |
| Declination (J2000) | −12° 53′ 00″ |
| Space velocity (relative to the Sun) | 111.9 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 12.67. Visible from the whole Southern Hemisphere and north to latitude 77° N. South of latitude 77° S it never sets. 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 1988. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 665 thousand years.
The Sun seen from there
From a planet around GJ 3189, the Sun would look like a star of magnitude 5.13, 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):
- CWISEP J023842.60-133210.7 3.16 light-years
- Gl 117 3.81 light-years
- 2MASSI J0251148-035245 6.02 light-years
- Gl 142 7.50 light-years
- 2MASSI J0243137-245329 8.38 light-years
- WISE J033605.05-014350.4 10.1 light-years
- τ¹ Eri 10.2 light-years
- GJ 1065 10.2 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.