Star · B3III
27 CMa
27 CMa is a giant star of spectral type B3III in the constellation Canis Major, 1,437 light-years from the Sun.
| Other names | HIP 34981 |
|---|---|
| Constellation | Canis Major |
| Distance | 1,437 light-years (440.6 pc) |
| Apparent magnitude | magnitude 4.42 |
| Absolute magnitude | magnitude −3.80 |
| Spectral type | B3III |
| Surface temperature | 12,900 K |
| Luminosity | 6,270 L☉ |
| Radius | 15.8 R☉ |
| Mass | 11 M☉ (estimated) |
| Right ascension (J2000) | 7h 14m 15.2s |
| Declination (J2000) | −26° 21′ 09″ |
| Space velocity (relative to the Sun) | 24.7 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 4.42). Visible from the whole Southern Hemisphere and north to latitude 64° N. South of latitude 64° 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 589. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 25 million years.
The Sun seen from there
From a planet around 27 CMa, the Sun would look like a star of magnitude 13.05, in the direction where our sky has the constellation Lyra. 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.