Star · F3IV
ε CrA
ε CrA is a subgiant star of spectral type F3IV in the constellation Corona Australis, 102.5 light-years from the Sun.
| Other names | HIP 93174 |
|---|---|
| Constellation | Corona Australis |
| Distance | 102.5 light-years (31.4 pc) |
| Apparent magnitude | magnitude 4.83 |
| Absolute magnitude | magnitude 2.34 |
| Spectral type | F3IV |
| Surface temperature | 6,900 K |
| Luminosity | 9.81 L☉ |
| Radius | 2.19 R☉ |
| Mass | 1.77 M☉ (estimated) |
| Right ascension (J2000) | 18h 58m 43.4s |
| Declination (J2000) | −37° 06′ 26″ |
| Space velocity (relative to the Sun) | 59.2 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 4.83). Visible from the whole Southern Hemisphere and north to latitude 53° N. South of latitude 53° S it never sets. It stands highest at midnight in July, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1923. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.8 million years.
The Sun seen from there
From a planet around ε CrA, the Sun would look like a star of magnitude 7.32, 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 91700 10.0 light-years
- GJ 4096 11.6 light-years
- HIP 91862 13.0 light-years
- GJ 4097 13.4 light-years
- HIP 94595 14.3 light-years
- HIP 89766 14.7 light-years
- GJ 4087 16.9 light-years
- 2MASS J19285196-4356256 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.