Star · F5IV
43 Per
43 Per is a subgiant star of spectral type F5IV in the constellation Perseus, 124.4 light-years from the Sun.
| Other names | HIP 18453 |
|---|---|
| Constellation | Perseus |
| Distance | 124.4 light-years (38.1 pc) |
| Apparent magnitude | magnitude 5.28 |
| Absolute magnitude | magnitude 2.37 |
| Spectral type | F5IV |
| Surface temperature | 6,750 K |
| Luminosity | 9.55 L☉ |
| Radius | 2.26 R☉ |
| Mass | 1.76 M☉ (estimated) |
| Right ascension (J2000) | 3h 56m 36.5s |
| Declination (J2000) | +50° 41′ 43″ |
| Space velocity (relative to the Sun) | 39.4 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.28). Visible from the whole Northern Hemisphere and south to latitude 39° S. North of latitude 39° N it never sets. It stands highest at midnight in November, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1902. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.2 million years.
The Sun seen from there
From a planet around 43 Per, the Sun would look like a star of magnitude 7.74, in the direction where our sky has the constellation Norma. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 18366 5.74 light-years
- HIP 17248 13.1 light-years
- 36 Per 13.7 light-years
- HIP 16563 13.7 light-years
- SDSS J035104.37+481046.8 14.6 light-years
- HIP 14985 15.2 light-years
- HIP 14300 18.9 light-years
- HIP 18758 19.9 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.