Star · K0III
ε TrA
ε TrA is a giant star of spectral type K0III in the constellation Triangulum Australe, 214.6 light-years from the Sun.
| Other names | HIP 76440 |
|---|---|
| Constellation | Triangulum Australe |
| Distance | 214.6 light-years (65.8 pc) |
| Apparent magnitude | magnitude 4.11 |
| Absolute magnitude | magnitude 0.02 |
| Spectral type | K0III |
| Surface temperature | 4,390 K |
| Luminosity | 167 L☉ |
| Radius | 22.4 R☉ |
| Mass | 3.92 M☉ (estimated) |
| Right ascension (J2000) | 15h 36m 43.2s |
| Declination (J2000) | −66° 19′ 01″ |
| Space velocity (relative to the Sun) | 23.5 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 24° N. South of latitude 24° S it never sets. It stands highest at midnight in May, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1811. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.8 million years.
The Sun seen from there
From a planet around ε TrA, the Sun would look like a star of magnitude 8.92, in the direction where our sky has the constellation Camelopardalis. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 76843 9.82 light-years
- HIP 74344 11.1 light-years
- HIP 77305 18.7 light-years
- HIP 72380 19.0 light-years
- HIP 77149 19.2 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.