Star · K7V
GJ 1177B
GJ 1177B is a main-sequence star of spectral type K7V in the constellation Centaurus, 47.6 light-years from the Sun.
| Constellation | Centaurus |
|---|---|
| Distance | 47.6 light-years (14.6 pc) |
| Apparent magnitude | magnitude 9.12 |
| Absolute magnitude | magnitude 8.30 |
| Spectral type | K7V |
| Surface temperature | 4,020 K |
| Luminosity | 0.115 L☉ |
| Radius | 0.7 R☉ |
| Mass | 0.582 M☉ (estimated) |
| Right ascension (J2000) | 13h 47m 42.6s |
| Declination (J2000) | −32° 25′ 57″ |
| Space velocity (relative to the Sun) | 7.3 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 9.12. Visible from the whole Southern Hemisphere and north to latitude 58° N. South of latitude 58° S it never sets. It stands highest at midnight in April, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1978. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 844 thousand years.
The Sun seen from there
From a planet around GJ 1177B, the Sun would look like a star of magnitude 5.65, in the direction where our sky has the constellation Triangulum. 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.