Star · G8
ζ Tel
ζ Tel is a giant star of spectral type G8 in the constellation Telescopium, 122.2 light-years from the Sun.
| Other names | HIP 90568 |
|---|---|
| Constellation | Telescopium |
| Distance | 122.2 light-years (37.5 pc) |
| Apparent magnitude | magnitude 4.10 |
| Absolute magnitude | magnitude 1.23 |
| Spectral type | G8 |
| Surface temperature | 4,750 K |
| Luminosity | 42.8 L☉ |
| Radius | 9.64 R☉ |
| Mass | 2.66 M☉ (estimated) |
| Right ascension (J2000) | 18h 28m 49.8s |
| Declination (J2000) | −49° 04′ 14″ |
| Space velocity (relative to the Sun) | 56.3 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 4.10). Visible from the whole Southern Hemisphere and north to latitude 41° N. South of latitude 41° S it never sets. It stands highest at midnight in June, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1904. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.2 million years.
The Sun seen from there
From a planet around ζ Tel, the Sun would look like a star of magnitude 7.70, in the direction where our sky has the constellation Auriga. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 90848 6.18 light-years
- HIP 91404 11.7 light-years
- GJ 9624 12.6 light-years
- HIP 92742 16.3 light-years
- 2MASS J18505160-5019113 17.1 light-years
- GJ 4085A 17.2 light-years
- HIP 93102 17.6 light-years
- HIP 90151 17.6 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.