Star · K5III
HIP 103145
HIP 103145 is a giant star of spectral type K5III in the constellation Cygnus, 612.6 light-years from the Sun.
| Constellation | Cygnus |
|---|---|
| Distance | 612.6 light-years (187.8 pc) |
| Apparent magnitude | magnitude 5.47 |
| Absolute magnitude | magnitude −0.90 |
| Spectral type | K5III |
| Surface temperature | 3,760 K |
| Luminosity | 753 L☉ |
| Radius | 64.6 R☉ |
| Mass | 6.03 M☉ (estimated) |
| Right ascension (J2000) | 20h 53m 53.9s |
| Declination (J2000) | +33° 26′ 16″ |
| Space velocity (relative to the Sun) | 37.9 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.47). Visible from the whole Northern Hemisphere and south to latitude 57° S. North of latitude 57° N 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 1413. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 11 million years.
The Sun seen from there
From a planet around HIP 103145, the Sun would look like a star of magnitude 11.20, in the direction where our sky has the constellation Pyxis. 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.