Star · K0III
33 Cap
33 Cap is a giant star of spectral type K0III in the constellation Capricornus, 255.1 light-years from the Sun.
| Other names | HIP 105665 |
|---|---|
| Constellation | Capricornus |
| Distance | 255.1 light-years (78.2 pc) |
| Apparent magnitude | magnitude 5.38 |
| Absolute magnitude | magnitude 0.91 |
| Spectral type | K0III |
| Surface temperature | 4,360 K |
| Luminosity | 75.2 L☉ |
| Radius | 15.2 R☉ |
| Mass | 3.12 M☉ (estimated) |
| Right ascension (J2000) | 21h 24m 09.6s |
| Declination (J2000) | −20° 51′ 07″ |
| Space velocity (relative to the Sun) | 52.4 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.38). Visible from the whole Southern Hemisphere and north to latitude 69° N. South of latitude 69° S it never sets. It stands highest at midnight in August, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1771. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 4.5 million years.
The Sun seen from there
From a planet around 33 Cap, the Sun would look like a star of magnitude 9.30, in the direction where our sky has the constellation Leo. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 105789 16.6 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.