Star · K1II
HIP 30717
HIP 30717 is a bright giant star of spectral type K1II in the constellation Monoceros, 839.4 light-years from the Sun.
| Constellation | Monoceros |
|---|---|
| Distance | 839.4 light-years (257.4 pc) |
| Apparent magnitude | magnitude 5.19 |
| Absolute magnitude | magnitude −1.86 |
| Spectral type | K1II |
| Surface temperature | 4,340 K |
| Luminosity | 986 L☉ |
| Radius | 55.6 R☉ |
| Mass | 6.51 M☉ (estimated) |
| Right ascension (J2000) | 6h 27m 13.8s |
| Declination (J2000) | +0° 17′ 57″ |
| Space velocity (relative to the Sun) | 33.8 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.19). Visible from the whole Southern Hemisphere and north to latitude 90° N. It stands highest at midnight in December, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1187. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 15 million years.
The Sun seen from there
From a planet around HIP 30717, the Sun would look like a star of magnitude 11.88, in the direction where our sky has the constellation Serpens. 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.