126 Tauri
126 Tauri (126 Tau) is a blue subgiant star in the constellation Taurus. Its apparent magnitude is 4.83. It is also a binary star, with an orbital period of 111 years.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Taurus |
| Right ascension | 05h 41m 17.71768s |
| Declination | +16° 32′ 02.9253″ |
| Apparent magnitude (V) | 4.836 (5.04 / 6.56) |
| Characteristics | |
| Spectral type | B3 IV |
| U−B color index | -0.64 |
| B−V color index | -0.12 |
| Astrometry | |
| Radial velocity (Rv) | 21.90 ± 0.9 km/s |
| Proper motion (μ) | RA: 3.50 mas/yr Dec.: −15.47 mas/yr |
| Parallax (π) | 5.13 ± 0.81 mas |
| Distance | approx. 600 ly (approx. 190 pc) |
| Orbit | |
| Period (P) | 111.02 ± 1.37 yr |
| Semi-major axis (a) | 0.245 ± 0.014″ |
| Eccentricity (e) | 0.661 ± 0.036 |
| Inclination (i) | 80.5 ± 1.1° |
| Longitude of the node (Ω) | 53.2 ± 0.8° |
| Periastron epoch (T) | B 1938.13 ± 1.64 |
| Argument of periastron (ω) (secondary) | 40.9 ± 5.8° |
| Details | |
| 128 Tau A | |
| Mass | 6.31 ± 0.42 M☉ |
| Luminosity | 2061 L☉ |
| Temperature | 17900 K |
| Other designations | |
| Database references | |
| SIMBAD | data |
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