Star · F3V
HIP 117551
HIP 117551 is a main-sequence star of spectral type F3V in the constellation Cassiopeia, 133.5 light-years from the Sun.
| Constellation | Cassiopeia |
|---|---|
| Distance | 133.5 light-years (40.9 pc) |
| Apparent magnitude | magnitude 6.47 |
| Absolute magnitude | magnitude 3.41 |
| Spectral type | F3V |
| Surface temperature | 6,860 K |
| Luminosity | 3.67 L☉ |
| Radius | 1.36 R☉ |
| Mass | 1.38 M☉ (estimated) |
| Right ascension (J2000) | 23h 50m 22.2s |
| Declination (J2000) | +51° 37′ 18″ |
| Space velocity (relative to the Sun) | 29.8 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.47). Visible from the whole Northern Hemisphere and south to latitude 38° S. North of latitude 38° 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 1892. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.4 million years.
The Sun seen from there
From a planet around HIP 117551, the Sun would look like a star of magnitude 7.89, in the direction where our sky has the constellation Centaurus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 114417 14.9 light-years
- HIP 2364 15.5 light-years
- PSO J354.3709+57.7939 17.3 light-years
- HIP 1978 19.4 light-years
- HIP 2760 20.0 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.