Star · G8I
ι Cnc
ι Cnc is a supergiant star of spectral type G8I in the constellation Cancer, 346.5 light-years from the Sun.
| Other names | HIP 43103 |
|---|---|
| Constellation | Cancer |
| Distance | 346.5 light-years (106.2 pc) |
| Apparent magnitude | magnitude 4.03 |
| Absolute magnitude | magnitude −1.10 |
| Spectral type | G8I |
| Surface temperature | 4,730 K |
| Luminosity | 373 L☉ |
| Radius | 28.8 R☉ |
| Mass | 4.93 M☉ (estimated) |
| Right ascension (J2000) | 8h 46m 41.8s |
| Declination (J2000) | +28° 45′ 36″ |
| Space velocity (relative to the Sun) | 29.2 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 4.03). Visible from the whole Northern Hemisphere and south to latitude 61° S. North of latitude 61° 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 1679. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 6.1 million years.
The Sun seen from there
From a planet around ι Cnc, the Sun would look like a star of magnitude 9.96, in the direction where our sky has the constellation Microscopium. 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.