Star · B8I
HIP 40787
HIP 40787 is a supergiant star of spectral type B8I in the constellation Puppis, 1,187 light-years from the Sun.
| Constellation | Puppis |
|---|---|
| Distance | 1,187 light-years (363.9 pc) |
| Apparent magnitude | magnitude 6.44 |
| Absolute magnitude | magnitude −1.36 |
| Spectral type | B8I |
| Surface temperature | 11,230 K |
| Luminosity | 505 L☉ |
| Radius | 5.94 R☉ |
| Mass | 5.38 M☉ (estimated) |
| Right ascension (J2000) | 8h 19m 29.5s |
| Declination (J2000) | −34° 35′ 24″ |
| Space velocity (relative to the Sun) | 27.3 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.44). Visible from the whole Southern Hemisphere and north to latitude 55° N. South of latitude 55° 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 839. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 21 million years.
The Sun seen from there
From a planet around HIP 40787, the Sun would look like a star of magnitude 12.63, 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.