Star · F8IV
Alkarab
Alkarab is a subgiant star of spectral type F8IV in the constellation Pegasus, 174.4 light-years from the Sun.
| Other names | υ Peg · HIP 115623 |
|---|---|
| Constellation | Pegasus |
| Distance | 174.4 light-years (53.5 pc) |
| Apparent magnitude | magnitude 4.42 |
| Absolute magnitude | magnitude 0.78 |
| Spectral type | F8IV |
| Surface temperature | 5,900 K |
| Luminosity | 44.3 L☉ |
| Radius | 6.37 R☉ |
| Mass | 2.68 M☉ (estimated) |
| Right ascension (J2000) | 23h 25m 22.8s |
| Declination (J2000) | +23° 24′ 15″ |
| Space velocity (relative to the Sun) | 50.7 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 4.42). Visible from the whole Northern Hemisphere and south to latitude 67° S. North of latitude 67° 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 1852. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.1 million years.
The Sun seen from there
From a planet around Alkarab, the Sun would look like a star of magnitude 8.47, in the direction where our sky has the constellation Crater. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 115370 14.2 light-years
- HIP 116052 15.6 light-years
- HIP 114282 16.5 light-years
- Salm 17.2 light-years
- HIP 114616 17.9 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.