Star · A3V
ρ² Cep
ρ² Cep is a main-sequence star of spectral type A3V in the constellation Cepheus, 239.8 light-years from the Sun.
| Other names | HIP 111056 |
|---|---|
| Constellation | Cepheus |
| Distance | 239.8 light-years (73.5 pc) |
| Apparent magnitude | magnitude 5.45 |
| Absolute magnitude | magnitude 1.12 |
| Spectral type | A3V |
| Surface temperature | 9,100 K |
| Luminosity | 36.8 L☉ |
| Radius | 2.44 R☉ |
| Mass | 2.54 M☉ (estimated) |
| Right ascension (J2000) | 22h 29m 52.9s |
| Declination (J2000) | +78° 49′ 27″ |
| Space velocity (relative to the Sun) | 7.4 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.45). Visible from the whole Northern Hemisphere and south to latitude 11° S. North of latitude 11° N it never sets.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1786. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 4.3 million years.
The Sun seen from there
From a planet around ρ² Cep, the Sun would look like a star of magnitude 9.16, in the direction where our sky has the constellation Chamaeleon. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 112114 19.2 light-years
- HIP 116551 19.6 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.