Star · F5V
27 Hya
27 Hya is a main-sequence star of spectral type F5V in the constellation Hydra, 222.9 light-years from the Sun.
| Other names | HIP 45811 |
|---|---|
| Constellation | Hydra |
| Distance | 222.9 light-years (68.4 pc) |
| Apparent magnitude | magnitude 4.80 |
| Absolute magnitude | magnitude 0.63 |
| Spectral type | F5V |
| Surface temperature | 4,960 K |
| Luminosity | 67.2 L☉ |
| Radius | 11.1 R☉ |
| Mass | 3.02 M☉ (estimated) |
| Right ascension (J2000) | 9h 20m 29.0s |
| Declination (J2000) | −9° 33′ 21″ |
| Space velocity (relative to the Sun) | 26.5 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 4.80). Visible from the whole Southern Hemisphere and north to latitude 80° N. It stands highest at midnight in February, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1803. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 4.0 million years.
The Sun seen from there
From a planet around 27 Hya, the Sun would look like a star of magnitude 9.00, in the direction where our sky has the constellation Equuleus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 45802 3.24 light-years
- HIP 45838 15.0 light-years
- HIP 44804 15.4 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.