Star · B5V
μ² Cru
μ² Cru is a main-sequence star of spectral type B5V in the constellation Crux, 394.5 light-years from the Sun.
| Other names | HIP 63005 |
|---|---|
| Constellation | Crux |
| Distance | 394.5 light-years (121.0 pc) |
| Apparent magnitude | magnitude 5.08 |
| Absolute magnitude | magnitude −0.33 |
| Spectral type | B5V |
| Surface temperature | 11,390 K |
| Luminosity | 201 L☉ |
| Radius | 3.64 R☉ |
| Mass | 4.13 M☉ (estimated) |
| Right ascension (J2000) | 12h 54m 36.9s |
| Declination (J2000) | −57° 10′ 07″ |
| Space velocity (relative to the Sun) | 25.7 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.08). Visible from the whole Southern Hemisphere and north to latitude 33° N. South of latitude 33° S it never sets. It stands highest at midnight in April, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1631. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 7.0 million years.
The Sun seen from there
From a planet around μ² Cru, the Sun would look like a star of magnitude 10.24, in the direction where our sky has the constellation Cassiopeia. 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.