Star · B6V
13 Cas
13 Cas is a main-sequence star of spectral type B6V in the constellation Cassiopeia, 838.1 light-years from the Sun.
| Other names | HIP 2474 |
|---|---|
| Constellation | Cassiopeia |
| Distance | 838.1 light-years (257.0 pc) |
| Apparent magnitude | magnitude 6.18 |
| Absolute magnitude | magnitude −0.87 |
| Spectral type | B6V |
| Surface temperature | 11,570 K |
| Luminosity | 339 L☉ |
| Radius | 4.58 R☉ |
| Mass | 4.8 M☉ (estimated) |
| Right ascension (J2000) | 0h 31m 25.2s |
| Declination (J2000) | +66° 31′ 11″ |
| Space velocity (relative to the Sun) | 25.6 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.18). Visible from the whole Northern Hemisphere and south to latitude 23° S. North of latitude 23° N it never sets. It stands highest at midnight in September, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1188. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 15 million years.
The Sun seen from there
From a planet around 13 Cas, the Sun would look like a star of magnitude 11.88, in the direction where our sky has the constellation Musca. 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.