Star · K2III
HIP 109730
HIP 109730 is a giant star of spectral type K2III in the constellation Pegasus, 237.4 light-years from the Sun.
| Constellation | Pegasus |
|---|---|
| Distance | 237.4 light-years (72.8 pc) |
| Apparent magnitude | magnitude 5.87 |
| Absolute magnitude | magnitude 1.56 |
| Spectral type | K2III |
| Surface temperature | 4,370 K |
| Luminosity | 41 L☉ |
| Radius | 11.2 R☉ |
| Mass | 2.62 M☉ (estimated) |
| Right ascension (J2000) | 22h 13m 38.7s |
| Declination (J2000) | +28° 36′ 29″ |
| Space velocity (relative to the Sun) | 32.8 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.87). Visible from the whole Northern Hemisphere and south to latitude 61° S. North of latitude 61° 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 1789. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 4.2 million years.
The Sun seen from there
From a planet around HIP 109730, the Sun would look like a star of magnitude 9.14, in the direction where our sky has the constellation Antlia. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 109931 15.5 light-years
- HIP 110775 17.1 light-years
- HIP 110184 17.5 light-years
- HIP 110946 17.5 light-years
- HIP 111067 19.6 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.