45 Herculis

From Wikipedia, the free encyclopedia
Jump to: navigation, search
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
Spectral type A0 (B9pCr)
B−V color index -0.007
Radial velocity (Rv) -16.1 km/s
Proper motion (μ) RA: -20.39 mas/yr
Dec.: -39.38 mas/yr
Parallax (π) 8.29 ± 0.27 mas
Distance 390 ± 10 ly
(121 ± 4 pc)
Other designations
45 Her, HR 6234, HD 151525, SAO 121865, BD +05°3272, WDS 16478+0515.
Database references

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.

External links[edit]