Star · F8IV
10 Ari
10 Ari is a subgiant star of spectral type F8IV in the constellation Aries, 167.6 light-years from the Sun.
| Other names | HIP 9621 |
|---|---|
| Constellation | Aries |
| Distance | 167.6 light-years (51.4 pc) |
| Apparent magnitude | magnitude 5.64 |
| Absolute magnitude | magnitude 2.09 |
| Spectral type | F8IV |
| Surface temperature | 6,230 K |
| Luminosity | 12.8 L☉ |
| Radius | 3.07 R☉ |
| Mass | 1.89 M☉ (estimated) |
| Right ascension (J2000) | 2h 03m 39.3s |
| Declination (J2000) | +25° 56′ 08″ |
| Space velocity (relative to the Sun) | 33.5 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.64). Visible from the whole Northern Hemisphere and south to latitude 64° S. North of latitude 64° 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 1858. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.0 million years.
The Sun seen from there
From a planet around 10 Ari, the Sun would look like a star of magnitude 8.38, in the direction where our sky has the constellation Hydra. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- 14 Ari 5.76 light-years
- 21 Ari 8.41 light-years
- HIP 10140 12.2 light-years
- HIP 9492 12.5 light-years
- HIP 8522 13.1 light-years
- HIP 8285 14.8 light-years
- 2MASSW J0208236+273740 15.4 light-years
- κ Ari 16.8 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.