Gamma Leporis

light-years
Proper names: Gamma Leporis, 13 Leporis
Catalog numbers:
     Gliese (Gl) 216, Hipparcos Input Catalog (HIC) 27072, Aitken Double Star (ADS) 4334, Fifth Fundamental Catalogue (FK5) 217
Age: 2700 million years
Source for age: B. Edvardsson et al., "Chemical Evolution of the Galactic Disc", A&AP 275
Heavy element abundance: 82% of Sol
Standard error in heavy element abundance: 6%
Source for heavy element abundance: Strobel [Fe/H] Determinations
Arity: binary
Right Ascension and Declination: 5h44m27.784s, -22°26'54.31" (epoch 2000.0)
Distance from Sol: 29.25 light-years (8.969 parsecs)
Standard error in distance: 0.5353%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: 1.832, 26.98, -11.17
Galactic (X,Y,Z) coordinates in ly: -18.26, -19.56, -11.81
Proper motion: 0.476 arcsec/yr (218.5° from north)
Radial Velocity: -9.7 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 18.33, 4.682, -12.07

What do all these fields mean?

Data for A and B's orbit around one other:
Combined absolute visual magnitude: +3.73
Combined visual luminosity: 2.815 x Sol
Observed Separation: 852.1 A.U.s
As seen from A:
     B would appear as magnitude -10.55
As seen from B:
     A would appear as magnitude -13.09


Component A:
Catalog numbers:
     Henry Draper (HD) 38393, Bonner Durchmusterung (BD) -221211, Smithsonian Astrophysical Observatory (SAO) 170759, Hoffleit Bright Star (HR) 1983
Spectral class: F6
Luminosity Class: V
Apparent visual magnitude: +3.59
Absolute visual magnitude: +3.83
Visual luminosity: 2.568 x Sol
Color indices: B-V= +0.47, U-B= +0.01, R-I= +0.16
Mass: 1.2 x Sol
Diameter: 1.272 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 1.602 A.U.s
Orbital period in CZ: 1.8517 years
Tidal index in CZ: 0.291647
Angular size of star in sky in CZ: 0.423338 degrees


Component B:
Catalog numbers:
     Henry Draper (HD) 38392, Bonner Durchmusterung (BD) -221210, Smithsonian Astrophysical Observatory (SAO) 170757, Hoffleit Bright Star (HR) 1982
Right Ascension and Declination: 5h44m26.5s, -22°25'18" (epoch 2000.0)
Celestial (X,Y,Z) coordinates in ly: 1.834, 26.98, -11.16
Galactic (X,Y,Z) coordinates in ly: -18.27, -19.56, -11.81
Proper motion: 0.47 arcsec/yr (220.7° from north)
Radial Velocity: -8.4 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 16.97, 4.396, -12.74
Spectral class: K2
Luminosity Class: V
Apparent visual magnitude: +6.13
Absolute visual magnitude: +6.37
Visual luminosity: 0.247 x Sol
Color indices: B-V= +0.94, U-B= +0.74, R-I= +0.35
Mass: 0.63 x Sol
Diameter: 1.022 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.497 A.U.s
Orbital period in CZ: 161.452 days
Tidal index in CZ: 5.1179
Angular size of star in sky in CZ: 1.095075 degrees

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