Star · F7V
31 Ari
31 Ari is a main-sequence star of spectral type F7V in the constellation Aries, 112.8 light-years from the Sun.
| Other names | HIP 12153 |
|---|---|
| Constellation | Aries |
| Distance | 112.8 light-years (34.6 pc) |
| Apparent magnitude | magnitude 5.64 |
| Absolute magnitude | magnitude 2.94 |
| Spectral type | F7V |
| Surface temperature | 6,320 K |
| Luminosity | 5.75 L☉ |
| Radius | 2 R☉ |
| Mass | 1.55 M☉ (estimated) |
| Right ascension (J2000) | 2h 36m 37.9s |
| Declination (J2000) | +12° 26′ 51″ |
| Space velocity (relative to the Sun) | 48.7 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 78° S. North of latitude 78° 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 1913. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.0 million years.
The Sun seen from there
From a planet around 31 Ari, the Sun would look like a star of magnitude 7.53, in the direction where our sky has the constellation Libra. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 11427 8.86 light-years
- TOI-2431 9.77 light-years
- HIP 11443 11.0 light-years
- HIP 10599 12.1 light-years
- ULAS J024557.88+065359.4 12.9 light-years
- HIP 11083 13.6 light-years
- HIP 13027 15.0 light-years
- HIP 12142 15.3 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.