Star · A1V
δ Hya
δ Hya is a main-sequence star of spectral type A1V in the constellation Hydra, 177.0 light-years from the Sun.
| Other names | HIP 42313 |
|---|---|
| Constellation | Hydra |
| Distance | 177.0 light-years (54.3 pc) |
| Apparent magnitude | magnitude 4.14 |
| Absolute magnitude | magnitude 0.47 |
| Spectral type | A1V |
| Surface temperature | 10,090 K |
| Luminosity | 77.6 L☉ |
| Radius | 2.88 R☉ |
| Mass | 3.15 M☉ (estimated) |
| Right ascension (J2000) | 8h 37m 39.4s |
| Declination (J2000) | +5° 42′ 14″ |
| Space velocity (relative to the Sun) | 23.6 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 4.14). Visible from the whole Northern Hemisphere and south to latitude 84° 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 1849. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.1 million years.
The Sun seen from there
From a planet around δ Hya, the Sun would look like a star of magnitude 8.50, in the direction where our sky has the constellation Aquila. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- SDSS J083646.35+052642.6 1.22 light-years
- ULAS J084743.93+035040.2 9.66 light-years
- HD 74156 11.5 light-years
- HIP 40839 13.7 light-years
- ULAS J084211.68+093611.9 14.3 light-years
- HIP 41088 16.6 light-years
- HIP 41090 16.6 light-years
- HIP 42084 17.8 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.