HD 148427
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Ophiuchus |
| Right ascension | 16h 28m 28.151s |
| Declination | −13° 23′ 58.69″ |
| Apparent magnitude (V) | 6.903 |
| Characteristics | |
| Spectral type | K0IV |
| Apparent magnitude (B) | 7.839 |
| Apparent magnitude (J) | 5.299 |
| Apparent magnitude (H) | 4.875 |
| Apparent magnitude (K) | 4.682 |
| B−V color index | 0.936 |
| Astrometry | |
| Proper motion (μ) | RA: −37.413 mas/yr Dec.: +3.049 mas/yr |
| Parallax (π) | 14.2059±0.0206 mas |
| Distance | 229.6 ± 0.3 ly (70.4 ± 0.1 pc) |
| Absolute magnitude (MV) | 3.039 |
| Orbit | |
| Primary | HD 148427 |
| Companion | HD 148427 b |
| Period (P) | 331.5±3.0 d (0.9076 yr) |
| Semi-major axis (a) | 0.93±0.01 AU |
| Eccentricity (e) | 0.16±0.08 |
| Inclination (i) | 0.5120+0.1635 −0.1082° |
| Details | |
| HD 148427 | |
| Mass | 1.45±0.06 M☉ |
| Radius | 3.22±0.2 R☉ |
| Luminosity | 6.06 L☉ |
| Surface gravity (log g) | 3.75 cgs |
| Temperature | 5052 ± 44 K |
| Metallicity [Fe/H] | 0.154 ± 0.04 dex |
| Age | 2.5 Gyr |
| HD 148427 b | |
| Mass | 136.5+37.2 −33.7 MJup |
| Other designations | |
| BD−13°4437, HIP 80687, PPM 231736, SAO 159932 | |
| HD 148427: Timir | |
| HD 148427 b: Tondra | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
HD 148427, formally named Timir, is a 7th-magnitude K-type subgiant star approximately 230 light years away in the constellation Ophiuchus. Its mass is 45% greater than the Sun, and it is three times the size and six times more luminous, although its age is 2½ billion years.