Star · M3III
HIP 102358
HIP 102358 is a giant star of spectral type M3III in the constellation Cepheus, 1,021 light-years from the Sun.
| Constellation | Cepheus |
|---|---|
| Distance | 1,021 light-years (313.1 pc) |
| Apparent magnitude | magnitude 5.91 |
| Absolute magnitude | magnitude −1.57 |
| Spectral type | M3III |
| Surface temperature | 3,590 K |
| Luminosity | 1,790 L☉ |
| Radius | 109 R☉ |
| Mass | 7.73 M☉ (estimated) |
| Right ascension (J2000) | 20h 44m 22.0s |
| Declination (J2000) | +56° 29′ 18″ |
| Space velocity (relative to the Sun) | 33.6 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.91). Visible from the whole Northern Hemisphere and south to latitude 34° S. North of latitude 34° N it never sets. It stands highest at midnight in July, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1005. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 18 million years.
The Sun seen from there
From a planet around HIP 102358, the Sun would look like a star of magnitude 12.31, in the direction where our sky has the constellation Carina. 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.