Star · B3V
HIP 40397
HIP 40397 is a main-sequence star of spectral type B3V in the constellation Vela, 1,363 light-years from the Sun.
| Constellation | Vela |
|---|---|
| Distance | 1,363 light-years (417.8 pc) |
| Apparent magnitude | magnitude 6.45 |
| Absolute magnitude | magnitude −1.65 |
| Spectral type | B3V |
| Surface temperature | 12,470 K |
| Luminosity | 809 L☉ |
| Radius | 6.1 R☉ |
| Mass | 6.15 M☉ (estimated) |
| Right ascension (J2000) | 8h 14m 51.2s |
| Declination (J2000) | −46° 29′ 09″ |
| Space velocity (relative to the Sun) | 23.7 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.45). Visible from the whole Southern Hemisphere and north to latitude 44° N. South of latitude 44° 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 663. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 24 million years.
The Sun seen from there
From a planet around HIP 40397, the Sun would look like a star of magnitude 12.93, 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.