Star · ?
GJ 3197B
GJ 3197B is a main-sequence star of spectral type ? in the constellation Eridanus, 67.9 light-years from the Sun.
| Constellation | Eridanus |
|---|---|
| Distance | 67.9 light-years (20.8 pc) |
| Apparent magnitude | magnitude 13.50 |
| Absolute magnitude | magnitude 11.91 |
| Spectral type | ? |
| Surface temperature | 3,650 K |
| Luminosity | 0.00667 L☉ |
| Radius | 0.204 R☉ |
| Mass | 0.215 M☉ (estimated) |
| Right ascension (J2000) | 3h 03m 47.5s |
| Declination (J2000) | −12° 51′ 14″ |
| Space velocity (relative to the Sun) | 25.7 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 13.50. 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 1958. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.2 million years.
The Sun seen from there
From a planet around GJ 3197B, the Sun would look like a star of magnitude 6.42, 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):
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.