Star · B5III
HIP 42001
HIP 42001 is a giant star of spectral type B5III in the constellation Vela, 719.3 light-years from the Sun.
| Constellation | Vela |
|---|---|
| Distance | 719.3 light-years (220.5 pc) |
| Apparent magnitude | magnitude 5.92 |
| Absolute magnitude | magnitude −0.80 |
| Spectral type | B5III |
| Surface temperature | 11,810 K |
| Luminosity | 330 L☉ |
| Radius | 4.34 R☉ |
| Mass | 4.76 M☉ (estimated) |
| Right ascension (J2000) | 8h 33m 38.4s |
| Declination (J2000) | −38° 50′ 56″ |
| Space velocity (relative to the Sun) | 36.7 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.92). Visible from the whole Southern Hemisphere and north to latitude 51° N. South of latitude 51° 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 1307. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 13 million years.
The Sun seen from there
From a planet around HIP 42001, the Sun would look like a star of magnitude 11.55, 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.