Star · A0III
HYG 109399
HYG 109399 is a giant star of spectral type A0III in the constellation Canis Minor, 658.2 light-years from the Sun.
| Constellation | Canis Minor |
|---|---|
| Distance | 658.2 light-years (201.8 pc) |
| Apparent magnitude | magnitude 6.02 |
| Absolute magnitude | magnitude −0.50 |
| Spectral type | A0III |
| Surface temperature | 10,420 K |
| Luminosity | 200 L☉ |
| Radius | 4.34 R☉ |
| Mass | 4.13 M☉ (estimated) |
| Right ascension (J2000) | 7h 40m 07.0s |
| Declination (J2000) | +5° 13′ 52″ |
| Space velocity (relative to the Sun) | 24.1 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.02). Visible from the whole Northern Hemisphere and south to latitude 85° S. It stands highest at midnight in January, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1368. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 12 million years.
The Sun seen from there
From a planet around HYG 109399, the Sun would look like a star of magnitude 11.35, in the direction where our sky has the constellation Aquila. 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.