Alphard
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- Alphard is also the name of a programming language.
Observation data Epoch J2000 |
|
---|---|
Constellation | Hydra |
Right ascension | 09h 27m 35.2s |
Declination | -08° 39′ 31″ |
Apparent magnitude (V) | +1.98 |
Characteristics | |
Spectral type | K3 II-III |
B-V color index | 1.44 |
U-B color index | 1.72 |
Variable type | ? |
Astrometry | |
Radial velocity (Rv) | -4 km/s |
Proper motion (μ) | RA: -14.49 mas/yr Dec.: 33.25 mas/yr |
Parallax (π) | 18.4 ± 0.78 mas |
Distance | 177 ± 8 ly (54 ± 2 pc) |
Absolute magnitude (MV) | −1.70 |
Details | |
Mass | ? M☉ |
Radius | 34.5 R☉ |
Luminosity | 400 L☉ |
Temperature | 4,400 K |
Metallicity | ? |
Rotation | <17 km/s. |
Age | ? years |
Other designations | |
Alphard (α Hya / α Hydrae / Alpha Hydrae) is the brightest star in the constellation Hydra.
Alphard is an orange giant star. The name Alphard is from the Arabic Al Fard, "the solitary one."