HD 38529
HD 38529 (138 G. Orionis) is a binary star approximately 138 light-years away in the constellation of Orion.
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Orion |
| HD 38529 A | |
| Right ascension | 05h 46m 34.91314s |
| Declination | +01° 10′ 05.5029″ |
| Apparent magnitude (V) | +5.94 |
| HD 38529 B | |
| Right ascension | 05h 46m 19.37663s |
| Declination | +01° 12′ 47.2640″ |
| Apparent magnitude (V) | +13.35 |
| Characteristics | |
| Spectral type | G4IV / M3.0V |
| U−B color index | ? / ? |
| B−V color index | 0.773 / 0.46 |
| Variable type | none / ? |
| Astrometry | |
| HD 38529 A | |
| Radial velocity (Rv) | 30.19±0.12 km/s |
| Proper motion (μ) | RA: −77.806±0.041 mas/yr Dec.: −141.363±0.038 mas/yr |
| Parallax (π) | 23.5714 ± 0.0422 mas |
| Distance | 138.4 ± 0.2 ly (42.42 ± 0.08 pc) |
| Absolute magnitude (MV) | +2.81 |
| HD 38529 B | |
| Radial velocity (Rv) | 30.94±0.43 km/s |
| Proper motion (μ) | RA: −78.612±0.017 mas/yr Dec.: −142.084±0.013 mas/yr |
| Parallax (π) | 23.7139 ± 0.0168 mas |
| Distance | 137.54 ± 0.10 ly (42.17 ± 0.03 pc) |
| Absolute magnitude (MV) | +10.23 |
| Details | |
| HD 38529 A | |
| Mass | 1.479±0.037 M☉ |
| Radius | 2.678±0.026 R☉ |
| Luminosity | 6.16±0.15 L☉ |
| Surface gravity (log g) | 3.83±0.06 cgs |
| Temperature | 5619±44 K |
| Metallicity [Fe/H] | 0.38±0.03 dex |
| Rotational velocity (v sin i) | 3.20±0.50 km/s |
| Age | 3.07±0.39 Gyr |
| Other designations | |
| HD 38529 A: BD+01°1126, HIP 27253, HR 1988, WDS J05466+0110A | |
| HD 38529 B: WDS J05466+0110B, LP 598-99, 2MASS J05461937+0112471 | |
| Database references | |
| SIMBAD | data |
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