Star · A3I
HIP 39734
HIP 39734 is a supergiant star of spectral type A3I in the constellation Puppis, 1,625 light-years from the Sun.
| Constellation | Puppis |
|---|---|
| Distance | 1,625 light-years (498.2 pc) |
| Apparent magnitude | magnitude 5.33 |
| Absolute magnitude | magnitude −3.16 |
| Spectral type | A3I |
| Surface temperature | 9,030 K |
| Luminosity | 1,870 L☉ |
| Radius | 17.7 R☉ |
| Mass | 7.82 M☉ (estimated) |
| Right ascension (J2000) | 8h 07m 18.0s |
| Declination (J2000) | −20° 33′ 16″ |
| Space velocity (relative to the Sun) | 27.5 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.33). 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 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 401. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 29 million years.
The Sun seen from there
From a planet around HIP 39734, the Sun would look like a star of magnitude 13.32, in the direction where our sky has the constellation Sagitta. 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.