V775 Herculis

light-years
Proper names: V775 Herculis
Catalog numbers:
     Woolley (Wo) 9638, Henry Draper (HD) 175742, Bonner Durchmusterung (BD) +23°3500, Hipparcos Input Catalog (HIC) 92919, Smithsonian Astrophysical Observatory (SAO) 86592, Luyten Two-Tenth (LTT) 15564
Arity: singular
Right Ascension and Declination: 18h55m53.221s, +23°33'23.84" (epoch 2000.0)
Distance from Sol: 69.9 light-years (21.4 parsecs)
Standard error in distance: 2.1607%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: 15.5, -62.2, 27.9
Galactic (X,Y,Z) coordinates in ly: 39.7, 56.5, 11.2
Proper motion: 0.314 arcsec/yr (155.4° from north)
Radial Velocity: 10.3 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 24.7, -0.13, -22.7

What do all these fields mean?


NOTE: This star is actually a close-orbiting binary pair. The data below are for both sub-components of the pair combined.
Spectral class: K2
Luminosity Class: V
Apparent visual magnitude: +8.07
Absolute visual magnitude: +6.42
Visual luminosity: 0.24 x Sol
Variable type: RS Canum Venaticorum (eclipsing binary)
Color indices: B-V= +0.91, U-B= +0.55
Diameter: 0.83 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.49 A.U.s
Angular size of star in sky in CZ: 0.910479 degrees

light-years
but not more than light-years away
Data for this star system were most recently updated on 4-April-2001.