![]() Location of Vega in the constellation Lyra |
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Observation data Epoch J2000.0 Equinox J2000.0 |
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Constellation | Lyra |
Pronunciation | /ˈviːɡə/ or /ˈveɪɡə/ |
Right ascension | 18 |
Declination | +38° 47′ 01.2802″ |
Apparent magnitude (V) | 0.03 |
Characteristics | |
Evolutionary stage | Main Sequence |
Spectral type | A0V |
U−B color index | −0.01 |
B−V color index | +0.00 |
Variable type | Suspected Delta Scuti |
Astrometry | |
Radial velocity (Rv) | −13.9 ± 0.9 km/s |
Proper motion (μ) | RA: 200.94 mas/yr |
Parallax (π) | 130.23 ± 0.36mas |
Distance | 25.04 ± 0.07 ly (7.68 ± 0.02 pc) |
Absolute magnitude (MV) | 0.58 |
Details | |
Mass | 2.135 ± 0.074M☉ |
Radius | 2.26 × 2.78R☉ |
Luminosity | 37 ± 3L☉ |
Surface gravity (log g) | 4.1 & 0.1 |
Temperature | 9602 ± 180K |
Metallicity [Fe/H] | −0.5dex |
Rotation | 12.5 h |
Rotational velocity (v sin i) | 274 km/s |
Age | 455 ± 13Myr |
Other designations | |
Wega, 织女一
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