Star · B4V
HIP 39943
HIP 39943 is a main-sequence star of spectral type B4V in the constellation Puppis, 1,024 light-years from the Sun.
| Constellation | Puppis |
|---|---|
| Distance | 1,024 light-years (313.9 pc) |
| Apparent magnitude | magnitude 5.66 |
| Absolute magnitude | magnitude −1.82 |
| Spectral type | B4V |
| Surface temperature | 12,550 K |
| Luminosity | 958 L☉ |
| Radius | 6.55 R☉ |
| Mass | 6.46 M☉ (estimated) |
| Right ascension (J2000) | 8h 09m 28.5s |
| Declination (J2000) | −16° 14′ 56″ |
| Space velocity (relative to the Sun) | 36.0 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.66). Visible from the whole Southern Hemisphere and north to latitude 74° N. South of latitude 74° 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 1002. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 18 million years.
The Sun seen from there
From a planet around HIP 39943, the Sun would look like a star of magnitude 12.31, 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.