Star · A5III
ο¹ Cnc
ο¹ Cnc is a giant star of spectral type A5III in the constellation Cancer, 160.4 light-years from the Sun.
| Other names | HIP 43970 |
|---|---|
| Constellation | Cancer |
| Distance | 160.4 light-years (49.2 pc) |
| Apparent magnitude | magnitude 5.22 |
| Absolute magnitude | magnitude 1.76 |
| Spectral type | A5III |
| Surface temperature | 8,580 K |
| Luminosity | 19 L☉ |
| Radius | 1.97 R☉ |
| Mass | 2.11 M☉ (estimated) |
| Right ascension (J2000) | 8h 57m 15.0s |
| Declination (J2000) | +15° 19′ 22″ |
| Space velocity (relative to the Sun) | 15.0 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.22). Visible from the whole Northern Hemisphere and south to latitude 75° S. North of latitude 75° N it never sets. It stands highest at midnight in February, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1866. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.8 million years.
The Sun seen from there
From a planet around ο¹ Cnc, the Sun would look like a star of magnitude 8.29, in the direction where our sky has the constellation Capricornus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- ο² Cnc 1.24 light-years
- CFBDS J090139.82+174051.3 7.25 light-years
- HIP 43418 8.50 light-years
- HIP 44997 9.32 light-years
- PSO J135.7840+16.9932 14.0 light-years
- HIP 45488 14.1 light-years
- 2MASS J08381155+1511155 14.5 light-years
- ULAS J085715.96+091325.3 18.4 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.