Star · G2 V
HD 133131 A
HD 133131 A is a main-sequence star of spectral type G2 V in the constellation Libra, 168.0 light-years from the Sun. It is orbited by 2 confirmed exoplanet(s).
| Other names | HIP 73674 |
|---|---|
| Constellation | Libra |
| Distance | 168.0 light-years (51.5 pc) |
| Apparent magnitude | magnitude 7.66 |
| Absolute magnitude | magnitude 4.10 |
| Spectral type | G2 V |
| Surface temperature | 5,800 K |
| Luminosity | 0.963 L☉ |
| Radius | 0.955 R☉ |
| Mass | 0.95 M☉ |
| Age | 9.7 billion years |
| Metallicity [Fe/H] | -0.31 |
| Right ascension (J2000) | 15h 03m 35.8s |
| Declination (J2000) | −27° 50′ 28″ |
| Space velocity (relative to the Sun) | 53.9 km/s |
In the sky
Too faint for the naked eye (magnitude 7.66); binoculars will find it. Visible from the whole Southern Hemisphere and north to latitude 62° N. South of latitude 62° S it never sets. It stands highest at midnight in May, 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 HD 133131 A, the Sun would look like a star of magnitude 8.39, in the direction where our sky has the constellation Aries. It would be invisible to the naked eye.
Planets
- HD 133131 A b 649-day orbit · 13.6 R⊕
- HD 133131 A c 3,570-day orbit · 14.3 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HD 133131 B 0.69 light-years
- HIP 72779 10.1 light-years
- HIP 72353 11.1 light-years
- HIP 73269 11.9 light-years
- HIP 72420 13.4 light-years
- HIP 72797 18.4 light-years
- HIP 71516 18.5 light-years
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.