HD 11343
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Eridanus |
| Right ascension | 01h 50m 06.33044s |
| Declination | −54° 27′ 53.8624″ |
| Apparent magnitude (V) | 7.88 |
| Characteristics | |
| Evolutionary stage | Red-giant branch star |
| Spectral type | K2III/IV |
| B−V color index | 1.10 |
| J−H color index | 0.556 |
| J−K color index | 0.722 |
| Astrometry | |
| Radial velocity (Rv) | 6.61 km/s |
| Proper motion (μ) | RA: 110.617 mas/yr Dec.: −46.798 mas/yr |
| Parallax (π) | 6.4964±0.0156 mas |
| Distance | 502 ± 1 ly (153.9 ± 0.4 pc) |
| Absolute magnitude (MV) | 1.240+0.275 −0.225 |
| Orbit | |
| Primary | HD 11343 A |
| Companion | HD 11343 B |
| Semi-major axis (a) | ~2600 AU |
| Details | |
| HD 11343 A | |
| Mass | 1.17±0.28 / 2.009±0.115 M☉ |
| Radius | 7.83±1.02 R☉ |
| Luminosity | 25.1+5.8 −5.6 L☉ |
| Surface gravity (log g) | 2.70±0.20 cgs |
| Temperature | 4670±100 K |
| Metallicity [Fe/H] | −0.15±0.08 dex |
| Rotational velocity (v sin i) | 1.3±0.9 km/s |
| HD 11343 B | |
| Mass | 0.680+0.078 −0.083 M☉ |
| Radius | 0.698+0.062 −0.060 R☉ |
| Surface gravity (log g) | 4.58+0.11 −0.09 cgs |
| Temperature | 4351+142 −113 K |
| Other designations | |
| CD−55 412, CPD−55 351, Gaia DR3 4912062772547406976, GC 2232, HD 11343, HIP 8541, SAO 232538, PPM 331373, TIC 231019255, TYC 8482-1124-1, GSC 08482-01124, 2MASS J01500631-5427539 | |
| Database references | |
| SIMBAD | data |
HD 11343 (HIP 8541) is a wide binary system between HD 11343 A, a K-type borderline giant star, and HD 11343 B, a red dwarf companion, located in the southern constellation of Eridanus about 500 light-years (150 pc) distant. Two gas giant exoplanets are known to orbit the primary star.