Rho Tauri
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Taurus |
| Right ascension | 04h 33m 50.91753s |
| Declination | +14° 50′ 39.9232″ |
| Apparent magnitude (V) | 4.66 |
| Characteristics | |
| Spectral type | A8V |
| U−B color index | +0.09 |
| B−V color index | +0.24 |
| Variable type | δ Scuti |
| Astrometry | |
| Radial velocity (Rv) | +39.6 km/s |
| Proper motion (μ) | RA: 103.20 mas/yr Dec.: −26.48 mas/yr |
| Parallax (π) | 20.61±0.57 mas |
| Distance | 158 ± 4 ly (49 ± 1 pc) |
| Absolute magnitude (MV) | +1.26 |
| Details | |
| Mass | 1.88 or 2.09±0.21 M☉ |
| Radius | 2.9 R☉ |
| Luminosity | 1.39 L☉ |
| Surface gravity (log g) | 4.02 cgs |
| Temperature | 7,640 K |
| Metallicity [Fe/H] | −0.46 dex |
| Rotation | 0.833 days |
| Rotational velocity (v sin i) | 117 km/s |
| Age | 1.0 Gyr |
| Other designations | |
| ρ Tau, 86 Tau, BD+14 720, FK5 1125, HD 28910, HIP 21273, HR 1444, SAO 94007 | |
| Database references | |
| SIMBAD | data |
Rho Tauri (ρ Tau, ρ Tauri) is a star in the constellation Taurus and a member of the Hyades star cluster.
Rho Tauri is a white A-type main sequence star with a mean apparent magnitude of +4.66. It is approximately 158 light years from Earth. Classified as a Delta Scuti type variable star, its brightness varies by 0.010 magnitudes over a period of 1.61 hours.
It has 1.88 times the mass of the Sun, with a projected rotational velocity of 117 km/s and an estimated rotation period of 488.5 days.
- Hyades, with ρ Tau appearing blue, left of center, marked with a red arrow
- A blue band light curve for Rho Tauri, adapted from Horan (1979)
