Star · A2
HIP 22573
HIP 22573 is a main-sequence star of spectral type A2 in the constellation Caelum, 268.0 light-years from the Sun.
| Constellation | Caelum |
|---|---|
| Distance | 268.0 light-years (82.2 pc) |
| Apparent magnitude | magnitude 5.82 |
| Absolute magnitude | magnitude 1.25 |
| Spectral type | A2 |
| Surface temperature | 8,980 K |
| Luminosity | 32.2 L☉ |
| Radius | 2.34 R☉ |
| Mass | 2.45 M☉ (estimated) |
| Right ascension (J2000) | 4h 51m 28.2s |
| Declination (J2000) | −34° 54′ 23″ |
| Space velocity (relative to the Sun) | 33.1 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.82). Visible from the whole Southern Hemisphere and north to latitude 55° N. South of latitude 55° S it never sets. It stands highest at midnight in December, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1758. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 4.8 million years.
The Sun seen from there
From a planet around HIP 22573, the Sun would look like a star of magnitude 9.40, in the direction where our sky has the constellation Hercules. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 22087 17.3 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.