Star · K4II
HIP 100016
HIP 100016 is a bright giant star of spectral type K4II in the constellation Cygnus, 2,442 light-years from the Sun.
| Constellation | Cygnus |
|---|---|
| Distance | 2,442 light-years (748.9 pc) |
| Apparent magnitude | magnitude 6.32 |
| Absolute magnitude | magnitude −3.05 |
| Spectral type | K4II |
| Surface temperature | 3,610 K |
| Luminosity | 6,870 L☉ |
| Radius | 212 R☉ |
| Mass | 11.3 M☉ (estimated) |
| Right ascension (J2000) | 20h 17m 29.1s |
| Declination (J2000) | +42° 43′ 19″ |
| Space velocity (relative to the Sun) | 20.8 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.32). Visible from the whole Northern Hemisphere and south to latitude 47° S. North of latitude 47° N it never sets. It stands highest at midnight in July, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around 417 BC. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 43 million years.
The Sun seen from there
From a planet around HIP 100016, the Sun would look like a star of magnitude 14.20, in the direction where our sky has the constellation Puppis. 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.