45 Herculis

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45 Herculis
Observation data
Epoch J2000      Equinox J2000
Constellation Hercules
Right ascension 16h 47m 46.418s
Declination +5° 14′ 48.285″
Apparent magnitude (V) 5.22
Characteristics
Spectral type A0 (B9pCr)
B−V color index -0.007
Astrometry
Radial velocity (Rv) -016.1 km/s
Proper motion (μ) RA: -0.00146 mas/yr
Dec.: -0.038766 mas/yr
Parallax (π) 0.000118 ± 1.45E-5 mas
Distance approx. 28,000,000 ly
(approx. 8,000,000 pc)
Other designations
45 Her, HR 6234, HD 151525, SAO 121865, BD +05°3272, WDS 16478+0515.

45 Herculis is a main sequence ACV star in the constellation Hercules. The Flamsteed designation for this star comes from the publication Historia Coelestis Britannica by John Flamsteed. It is the 45th star in Flamsteed list of stars in the constellation Hercules.

Its spectral classification has been measured as A0 and also as B9pCr. Based on this, it is similar in mass and luminosity to Vega. Parallax measurements show this star to be about 230 light years from the solar system.

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