HD 10180
HD 10180, also designated 2MASS J01375356-6030414, is a Sun-like star in the southern constellation Hydrus that is notable for its large planetary system. Since its discovery, at least six exoplanets have been observed orbiting it, and some studies have proposed up to nine potential planets, which would make it potentially the largest of all known planetary systems, including the Solar System.
View of the sky around the star HD 10180 (center) Credit: ESO | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Hydrus |
| Right ascension | 01h 37m 53.57724s |
| Declination | −60° 30′ 41.4821″ |
| Apparent magnitude (V) | 7.33 |
| Characteristics | |
| Evolutionary stage | Main sequence |
| Spectral type | G1V |
| Astrometry | |
| Radial velocity (Rv) | 35.44±0.12 km/s |
| Proper motion (μ) | RA: −14.303±0.017 mas/yr Dec.: 8.058±0.016 mas/yr |
| Parallax (π) | 25.6611 ± 0.0146 mas |
| Distance | 127.10 ± 0.07 ly (38.97 ± 0.02 pc) |
| Details | |
| Mass | 1.062 ± 0.017 M☉ |
| Radius | 1.11 ± 0.318 R☉ |
| Luminosity | 1.64± 0.02 L☉ |
| Surface gravity (log g) | 4.39 cgs |
| Temperature | 5,911 K |
| Metallicity [Fe/H] | 0.08 dex |
| Rotation | 24 ± 3 days |
| Rotational velocity (v sin i) | < 3 km/s |
| Age | 7.3 Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
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