Star · K2V
GJ 1064B
GJ 1064B is a main-sequence star of spectral type K2V in the constellation Perseus, 78.6 light-years from the Sun.
| Constellation | Perseus |
|---|---|
| Distance | 78.6 light-years (24.1 pc) |
| Apparent magnitude | magnitude 8.75 |
| Absolute magnitude | magnitude 6.84 |
| Spectral type | K2V |
| Surface temperature | 5,000 K |
| Luminosity | 0.216 L☉ |
| Radius | 0.621 R☉ |
| Mass | 0.682 M☉ (estimated) |
| Right ascension (J2000) | 3h 47m 02.7s |
| Declination (J2000) | +41° 25′ 42″ |
| Space velocity (relative to the Sun) | 167.0 km/s |
In the sky
Too faint for the naked eye (magnitude 8.75); binoculars will find it. Visible from the whole Northern Hemisphere and south to latitude 49° S. North of latitude 49° N 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 1947. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.4 million years.
The Sun seen from there
From a planet around GJ 1064B, the Sun would look like a star of magnitude 6.74, in the direction where our sky has the constellation Lupus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- GJ 1064A 0.76 light-years
- Gl 150.2 6.83 light-years
- WISE J031614.68+382008.0 9.97 light-years
- HIP 19930 10.5 light-years
- HIP 17458 10.5 light-years
- HIP 15797 10.8 light-years
- HIP 20222 11.1 light-years
- CWISE J034146.12+471530.5 11.2 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.