Star · K0V
GJ 1255A
GJ 1255A is a main-sequence star of spectral type K0V in the constellation Cepheus, 86.6 light-years from the Sun.
| Other names | HIP 101750 |
|---|---|
| Constellation | Cepheus |
| Distance | 86.6 light-years (26.5 pc) |
| Apparent magnitude | magnitude 7.46 |
| Absolute magnitude | magnitude 5.34 |
| Spectral type | K0V |
| Surface temperature | 5,110 K |
| Luminosity | 0.821 L☉ |
| Radius | 1.16 R☉ |
| Mass | 0.952 M☉ (estimated) |
| Right ascension (J2000) | 20h 37m 21.7s |
| Declination (J2000) | +75° 36′ 01″ |
| Space velocity (relative to the Sun) | 79.7 km/s |
In the sky
Too faint for the naked eye (magnitude 7.46); binoculars will find it. Visible from the whole Northern Hemisphere and south to latitude 14° S. North of latitude 14° N it never sets.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1939. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.5 million years.
The Sun seen from there
From a planet around GJ 1255A, the Sun would look like a star of magnitude 6.95, in the direction where our sky has the constellation Chamaeleon. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- GJ 1255C 0.00 light-years
- HIP 102616 7.14 light-years
- HIP 103650 7.89 light-years
- 59 Dra 8.65 light-years
- GJ 4194 9.31 light-years
- WISE J213512.63+731236.8 9.82 light-years
- WISE J195436.15+691541.3 10.7 light-years
- Gl 765.2 11.8 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.