Star · M3III
27 Cnc
27 Cnc is a giant star of spectral type M3III in the constellation Cancer, 916.8 light-years from the Sun.
| Other names | HIP 41400 |
|---|---|
| Constellation | Cancer |
| Distance | 916.8 light-years (281.1 pc) |
| Apparent magnitude | magnitude 5.56 |
| Absolute magnitude | magnitude −1.68 |
| Spectral type | M3III |
| Surface temperature | 3,640 K |
| Luminosity | 1,850 L☉ |
| Radius | 108 R☉ |
| Mass | 7.8 M☉ (estimated) |
| Right ascension (J2000) | 8h 26m 43.9s |
| Declination (J2000) | +12° 39′ 17″ |
| Space velocity (relative to the Sun) | 140.7 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.56). Visible from the whole Northern Hemisphere and south to latitude 77° S. North of latitude 77° N 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 1109. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 16 million years.
The Sun seen from there
From a planet around 27 Cnc, the Sun would look like a star of magnitude 12.07, in the direction where our sky has the constellation Capricornus. 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.