Star · B3V
ζ Cir
ζ Cir is a main-sequence star of spectral type B3V in the constellation Circinus, 1,400 light-years from the Sun.
| Other names | HIP 72965 |
|---|---|
| Constellation | Circinus |
| Distance | 1,400 light-years (429.3 pc) |
| Apparent magnitude | magnitude 6.09 |
| Absolute magnitude | magnitude −2.07 |
| Spectral type | B3V |
| Surface temperature | 10,960 K |
| Luminosity | 928 L☉ |
| Radius | 8.45 R☉ |
| Mass | 6.4 M☉ (estimated) |
| Right ascension (J2000) | 14h 54m 42.6s |
| Declination (J2000) | −65° 59′ 28″ |
| Space velocity (relative to the Sun) | 30.7 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.09). 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 626. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 25 million years.
The Sun seen from there
From a planet around ζ Cir, the Sun would look like a star of magnitude 12.99, in the direction where our sky has the constellation Cassiopeia. 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.