Star · G6
Zhang
Zhang is a supergiant star of spectral type G6 in the constellation Hydra, 248.5 light-years from the Sun.
| Other names | υ¹ Hya · HIP 48356 |
|---|---|
| Constellation | Hydra |
| Distance | 248.5 light-years (76.2 pc) |
| Apparent magnitude | magnitude 4.11 |
| Absolute magnitude | magnitude −0.30 |
| Spectral type | G6 |
| Surface temperature | 4,950 K |
| Luminosity | 159 L☉ |
| Radius | 17.1 R☉ |
| Mass | 3.86 M☉ (estimated) |
| Right ascension (J2000) | 9h 51m 28.7s |
| Declination (J2000) | −14° 50′ 48″ |
| Space velocity (relative to the Sun) | 20.7 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 4.11). Visible from the whole Southern Hemisphere and north to latitude 75° N. South of latitude 75° S it never sets. 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 1778. 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 Zhang, the Sun would look like a star of magnitude 9.24, in the direction where our sky has the constellation Pegasus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 47760 15.0 light-years
- HIP 48830 15.1 light-years
- HIP 48636 15.7 light-years
- HIP 48135 19.6 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.