Star · G5II
HIP 7617
HIP 7617 is a bright giant star of spectral type G5II in the constellation Cassiopeia, 1,352 light-years from the Sun.
| Constellation | Cassiopeia |
|---|---|
| Distance | 1,352 light-years (414.6 pc) |
| Apparent magnitude | magnitude 5.55 |
| Absolute magnitude | magnitude −2.54 |
| Spectral type | G5II |
| Surface temperature | 3,970 K |
| Luminosity | 2,620 L☉ |
| Radius | 108 R☉ |
| Mass | 8.61 M☉ (estimated) |
| Right ascension (J2000) | 1h 38m 07.6s |
| Declination (J2000) | +57° 58′ 39″ |
| Space velocity (relative to the Sun) | 17.6 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.55). Visible from the whole Northern Hemisphere and south to latitude 32° S. North of latitude 32° N it never sets. It stands highest at midnight in October, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 674. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 24 million years.
The Sun seen from there
From a planet around HIP 7617, the Sun would look like a star of magnitude 12.92, in the direction where our sky has the constellation Centaurus. 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.