Star · B8
κ² CrA
κ² CrA is a main-sequence star of spectral type B8 in the constellation Corona Australis, 727.5 light-years from the Sun.
| Other names | HIP 90969 |
|---|---|
| Constellation | Corona Australis |
| Distance | 727.5 light-years (223.0 pc) |
| Apparent magnitude | magnitude 6.31 |
| Absolute magnitude | magnitude −0.43 |
| Spectral type | B8 |
| Surface temperature | 9,880 K |
| Luminosity | 172 L☉ |
| Radius | 4.48 R☉ |
| Mass | 3.95 M☉ (estimated) |
| Right ascension (J2000) | 18h 33m 23.1s |
| Declination (J2000) | −38° 43′ 12″ |
| Space velocity (relative to the Sun) | 28.7 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.31). Visible from the whole Southern Hemisphere and north to latitude 51° N. South of latitude 51° 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 1299. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 13 million years.
The Sun seen from there
From a planet around κ² CrA, the Sun would look like a star of magnitude 11.57, in the direction where our sky has the constellation Auriga. It would be invisible to the naked eye.
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.