Star · K1III
HIP 105646
HIP 105646 is a giant star of spectral type K1III in the constellation Capricornus, 741.7 light-years from the Sun.
| Constellation | Capricornus |
|---|---|
| Distance | 741.7 light-years (227.4 pc) |
| Apparent magnitude | magnitude 6.47 |
| Absolute magnitude | magnitude −0.31 |
| Spectral type | K1III |
| Surface temperature | 4,470 K |
| Luminosity | 214 L☉ |
| Radius | 24.4 R☉ |
| Mass | 4.21 M☉ (estimated) |
| Right ascension (J2000) | 21h 23m 55.9s |
| Declination (J2000) | −25° 12′ 09″ |
| Space velocity (relative to the Sun) | 66.9 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.47). Visible from the whole Southern Hemisphere and north to latitude 65° N. South of latitude 65° S it never sets. It stands highest at midnight in August, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1284. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 13 million years.
The Sun seen from there
From a planet around HIP 105646, the Sun would look like a star of magnitude 11.61, in the direction where our sky has the constellation Leo. It would be invisible to the naked eye.
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.