Star · K2II
HIP 113684
HIP 113684 is a bright giant star of spectral type K2II in the constellation Cassiopeia, 1,390 light-years from the Sun.
| Constellation | Cassiopeia |
|---|---|
| Distance | 1,390 light-years (426.2 pc) |
| Apparent magnitude | magnitude 6.24 |
| Absolute magnitude | magnitude −1.91 |
| Spectral type | K2II |
| Surface temperature | 3,800 K |
| Luminosity | 1,820 L☉ |
| Radius | 98.7 R☉ |
| Mass | 7.76 M☉ (estimated) |
| Right ascension (J2000) | 23h 01m 30.7s |
| Declination (J2000) | +57° 06′ 20″ |
| Space velocity (relative to the Sun) | 16.6 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.24). Visible from the whole Northern Hemisphere and south to latitude 33° S. North of latitude 33° N it never sets. It stands highest at midnight in September, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 636. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 25 million years.
The Sun seen from there
From a planet around HIP 113684, the Sun would look like a star of magnitude 12.98, in the direction where our sky has the constellation Vela. 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.