| Observation data EpochJ2000 EquinoxJ2000 | |
|---|---|
| Constellation | Centaurus[1] |
| Right ascension | 13h 50m 06.280s[2] |
| Declination | −40° 50′ 08.88″[2] |
| Apparent magnitude (V) | 9.80±0.03[3] |
| Characteristics | |
| Evolutionary stage | Main sequence[4] |
| Spectral type | G0V[5] |
| Astrometry | |
| Radial velocity (Rv) | 8.26±2.19[2] km/s |
| Proper motion (μ) | RA: −28.907mas/yr[2] Dec.: −22.248mas/yr[2] |
| Parallax (π) | 8.0170±0.0182 mas[2] |
| Distance | 406.8 ± 0.9 ly (124.7 ± 0.3 pc) |
| Details[4] | |
| Mass | 1.22±0.05 M☉ |
| Radius | 1.38±0.06 R☉ |
| Luminosity | 1.75±0.09 L☉ |
| Temperature | 5,675±75 K |
| Rotation | 1.418±0.016 days |
| Rotational velocity (v sin i) | 54.2±0.7 km/s |
| Age | 17±2 Myr |
| Other designations | |
| CD−40 8189,HD 120411,HIP 67522,TOI-6551,TIC 166527623[6] | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
HIP 67522 is aG-type main sequence star located at a distance of 407light-years (125parsecs) away in the constellation ofCentaurus. Itsvisual magnitude of 9.8 makes it much too faint to be seen by the unaided eye. It is slightly larger than the Sun (1.38R☉) but cooler (5,675 K versus 5,772 K for the Sun). It is also very young being only around 17 million years old. It has two exoplanets orbiting it.[4]
Twoexoplanets,HIP 67522 b and HIP 67522 c, are known to orbit the star and transit its face as seen from Earth. Their orbital periods are much less thanMercury's 88 days around the Sun, being 6.96 days forb and 14.33 days forc.[7]
Detections of frequent flaring of the star during the transit phase of the innermost planet (HIP 67522b) suggest that interacts with the stars magnetic field producing the high rate of flares.[8]
| Companion (in order from star) | Mass | Semimajor axis (AU) | Orbital period (days) | Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 0.0434±0.0031 MJ | 0.0748+0.0016 −0.0018 | 6.9594731(22) | 0.064+0.187 −0.049 | 89.88+1.08 −0.93° | 0.891+0.021 −0.02 RJ |
| c | — | 0.1228+0.0042 −0.0053 | 14.334892(12) | 0.077+0.195 −0.056 | 89.2+1.75 −0.64° | 0.708+0.031 −0.032 RJ |
