Star · F7II
HIP 109737
HIP 109737 is a bright giant star of spectral type F7II in the constellation Piscis Austrinus, 246.0 light-years from the Sun.
| Constellation | Piscis Austrinus |
|---|---|
| Distance | 246.0 light-years (75.4 pc) |
| Apparent magnitude | magnitude 5.58 |
| Absolute magnitude | magnitude 1.19 |
| Spectral type | F7II |
| Surface temperature | 6,400 K |
| Luminosity | 28.7 L☉ |
| Radius | 4.35 R☉ |
| Mass | 2.37 M☉ (estimated) |
| Right ascension (J2000) | 22h 13m 44.4s |
| Declination (J2000) | −25° 10′ 51″ |
| Space velocity (relative to the Sun) | 35.6 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.58). Visible from the whole Southern Hemisphere and north to latitude 65° N. South of latitude 65° S 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 1780. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 4.4 million years.
The Sun seen from there
From a planet around HIP 109737, the Sun would look like a star of magnitude 9.22, in the direction where our sky has the constellation Leo. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 109116 17.5 light-years
- 41 Aqr 18.7 light-years
- HIP 108617 19.4 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.