Star · K0II
HIP 104172
HIP 104172 is a bright giant star of spectral type K0II in the constellation Vulpecula, 431.4 light-years from the Sun.
| Constellation | Vulpecula |
|---|---|
| Distance | 431.4 light-years (132.3 pc) |
| Apparent magnitude | magnitude 6.13 |
| Absolute magnitude | magnitude 0.52 |
| Spectral type | K0II |
| Surface temperature | 4,680 K |
| Luminosity | 85.8 L☉ |
| Radius | 14.1 R☉ |
| Mass | 3.24 M☉ (estimated) |
| Right ascension (J2000) | 21h 06m 23.5s |
| Declination (J2000) | +26° 55′ 28″ |
| Space velocity (relative to the Sun) | 31.2 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.13). Visible from the whole Northern Hemisphere and south to latitude 63° S. North of latitude 63° 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 1595. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 7.7 million years.
The Sun seen from there
From a planet around HIP 104172, the Sun would look like a star of magnitude 10.44, 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.