Star · B1III
ξ¹ CMa
ξ¹ CMa is a giant star of spectral type B1III in the constellation Canis Major, 1,506 light-years from the Sun.
| Other names | HIP 31125 |
|---|---|
| Constellation | Canis Major |
| Distance | 1,506 light-years (461.7 pc) |
| Apparent magnitude | magnitude 4.34 |
| Absolute magnitude | magnitude −3.98 |
| Spectral type | B1III |
| Surface temperature | 14,780 K |
| Luminosity | 9,970 L☉ |
| Radius | 15.2 R☉ |
| Mass | 12.6 M☉ (estimated) |
| Right ascension (J2000) | 6h 31m 51.4s |
| Declination (J2000) | −23° 25′ 06″ |
| Space velocity (relative to the Sun) | 31.1 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 4.34). Visible from the whole Southern Hemisphere and north to latitude 67° N. South of latitude 67° S it never sets. It stands highest at midnight in December, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 520. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 27 million years.
The Sun seen from there
From a planet around ξ¹ CMa, the Sun would look like a star of magnitude 13.15, in the direction where our sky has the constellation Hercules. 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.