Star · A7IV
σ² Cnc
σ² Cnc is a subgiant star of spectral type A7IV in the constellation Cancer, 191.4 light-years from the Sun.
| Other names | HIP 43932 |
|---|---|
| Constellation | Cancer |
| Distance | 191.4 light-years (58.7 pc) |
| Apparent magnitude | magnitude 5.44 |
| Absolute magnitude | magnitude 1.60 |
| Spectral type | A7IV |
| Surface temperature | 8,310 K |
| Luminosity | 21.4 L☉ |
| Radius | 2.23 R☉ |
| Mass | 2.18 M☉ (estimated) |
| Right ascension (J2000) | 8h 56m 56.6s |
| Declination (J2000) | +32° 54′ 37″ |
| Space velocity (relative to the Sun) | 24.1 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.44). Visible from the whole Northern Hemisphere and south to latitude 57° S. North of latitude 57° 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 1835. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.4 million years.
The Sun seen from there
From a planet around σ² Cnc, the Sun would look like a star of magnitude 8.67, in the direction where our sky has the constellation Microscopium. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- SDSS J084307.95+314129.2 14.0 light-years
- 61 Cnc 14.1 light-years
- HIP 43426 14.5 light-years
- SDSS J091128.95+320644.7 14.8 light-years
- SDSS J084520.21+360551.4 15.6 light-years
- HIP 43634 15.9 light-years
- HIP 44169 16.0 light-years
- 67 Cnc 18.0 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.