Star · O5I
Naos
Naos is a supergiant star of spectral type O5I in the constellation Puppis, 1,084 light-years from the Sun.
| Other names | ζ Pup · HIP 39429 |
|---|---|
| Constellation | Puppis |
| Distance | 1,084 light-years (332.2 pc) |
| Apparent magnitude | magnitude 2.21 |
| Absolute magnitude | magnitude −5.40 |
| Spectral type | O5I |
| Surface temperature | 15,520 K |
| Luminosity | 41,100 L☉ |
| Radius | 28 R☉ |
| Mass | 18.9 M☉ (estimated) |
| Right ascension (J2000) | 8h 03m 35.0s |
| Declination (J2000) | −40° 00′ 11″ |
| Space velocity (relative to the Sun) | 58.7 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 2.21). Visible from the whole Southern Hemisphere and north to latitude 50° N. South of latitude 50° S it never sets. It stands highest at midnight in January, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 942. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 19 million years.
The Sun seen from there
From a planet around Naos, the Sun would look like a star of magnitude 12.44, in the direction where our sky has the constellation Cygnus. 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.