Star · K2III
Hamal
Hamal is a giant star of spectral type K2III in the constellation Aries, 65.8 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Other names | α Ari · alf Ari · Gl 84.3 · HIP 9884 |
|---|---|
| Constellation | Aries |
| Distance | 65.8 light-years (20.2 pc) |
| Apparent magnitude | magnitude 2.01 |
| Absolute magnitude | magnitude 0.49 |
| Spectral type | K2III |
| Surface temperature | 4,550 K |
| Luminosity | 85.9 L☉ |
| Radius | 13.9 R☉ |
| Mass | 1.5 M☉ |
| Metallicity [Fe/H] | -0.09 |
| Right ascension (J2000) | 2h 07m 10.4s |
| Declination (J2000) | +23° 27′ 45″ |
| Space velocity (relative to the Sun) | 27.1 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 2.01). 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 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 1960. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.2 million years.
The Sun seen from there
From a planet around Hamal, the Sun would look like a star of magnitude 6.35, in the direction where our sky has the constellation Hydra. It would be visible to the naked eye.
Planets
- alf Ari b 381-day orbit · 13.4 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- WISEPA J020625.26+264023.6 4.81 light-years
- GJ 3114 7.49 light-years
- Mothallah 8.09 light-years
- Sheratan 8.32 light-years
- GJ 3150 8.62 light-years
- GJ 1045 9.66 light-years
- GJ 3108 10.3 light-years
- 2MASSW J0208183+254253 10.3 light-years
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.