Star · F7
HIP 40155
HIP 40155 is a supergiant star of spectral type F7 in the constellation Vela, 2,635 light-years from the Sun.
| Constellation | Vela |
|---|---|
| Distance | 2,635 light-years (807.8 pc) |
| Apparent magnitude | magnitude 5.77 |
| Absolute magnitude | magnitude −3.77 |
| Spectral type | F7 |
| Surface temperature | 5,870 K |
| Luminosity | 2,930 L☉ |
| Radius | 52.4 R☉ |
| Mass | 8.89 M☉ (estimated) |
| Right ascension (J2000) | 8h 11m 60.0s |
| Declination (J2000) | −46° 38′ 40″ |
| Space velocity (relative to the Sun) | 44.1 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.77). Visible from the whole Southern Hemisphere and north to latitude 43° N. South of latitude 43° 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 610 BC. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 47 million years.
The Sun seen from there
From a planet around HIP 40155, the Sun would look like a star of magnitude 14.37, 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.