Star · A6I
HIP 36431
HIP 36431 is a supergiant star of spectral type A6I in the constellation Puppis, 4,329 light-years from the Sun.
| Constellation | Puppis |
|---|---|
| Distance | 4,329 light-years (1,327 pc) |
| Apparent magnitude | magnitude 4.85 |
| Absolute magnitude | magnitude −5.76 |
| Spectral type | A6I |
| Surface temperature | 7,840 K |
| Luminosity | 18,000 L☉ |
| Radius | 72.6 R☉ |
| Mass | 14.9 M☉ (estimated) |
| Right ascension (J2000) | 7h 29m 51.4s |
| Declination (J2000) | −23° 01′ 27″ |
| Space velocity (relative to the Sun) | 47.7 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 4.85). Visible from the whole Southern Hemisphere and north to latitude 67° N. South of latitude 67° 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 4,329 years ago. At that time the first farming villages were being founded; there was no writing yet. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 77 million years.
The Sun seen from there
From a planet around HIP 36431, the Sun would look like a star of magnitude 15.44, in the direction where our sky has the constellation Vulpecula. 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.