Star · A5V
HIP 109984
HIP 109984 is a main-sequence star of spectral type A5V in the constellation Aquarius, 244.1 light-years from the Sun.
| Constellation | Aquarius |
|---|---|
| Distance | 244.1 light-years (74.8 pc) |
| Apparent magnitude | magnitude 6.16 |
| Absolute magnitude | magnitude 1.79 |
| Spectral type | A5V |
| Surface temperature | 8,210 K |
| Luminosity | 17.8 L☉ |
| Radius | 2.08 R☉ |
| Mass | 2.07 M☉ (estimated) |
| Right ascension (J2000) | 22h 16m 33.7s |
| Declination (J2000) | −1° 35′ 47″ |
| Space velocity (relative to the Sun) | 10.9 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.16). Visible from the whole Southern Hemisphere and north to latitude 88° N. 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 1782. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 4.3 million years.
The Sun seen from there
From a planet around HIP 109984, the Sun would look like a star of magnitude 9.20, in the direction where our sky has the constellation Sextans. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- CFBDS J221336.00-000333.0 9.36 light-years
- HIP 109186 13.7 light-years
- HIP 108748 16.0 light-years
- 32 Aqr 18.6 light-years
- HIP 109836 19.0 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.