Cape Photographic Durchmusterung -61°6537

light-years

Catalog numbers:
     Gliese (Gl) 825.1, Henry Draper (HD) 202457, Cape Photographic Durchmusterung (CPD) -61°6537, Luyten Half-Second (LHS) 3652, Hipparcos Input Catalog (HIC) 105214, Smithsonian Astrophysical Observatory (SAO) 254970, Woolley (Wo) 9729
Arity: singular
Right Ascension and Declination: 21h18m44.341s, -61°21'10.6" (epoch 2000.0)
Distance from Sol: 70 light-years (21 parsecs)
Standard error in distance: 15.2727%
Source for distance: Gliese
Celestial (X,Y,Z) coordinates in ly: 26, -22, -61
Galactic (X,Y,Z) coordinates in ly: 47, -23, -46
Proper motion: 0.659 arcsec/yr (133.6° from north)
Radial Velocity: -19.6 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -58, -38, -9.5

What do all these fields mean?


Spectral class: G5
Luminosity Class: V
Apparent visual magnitude: +6.60
Absolute visual magnitude: +4.94
Visual luminosity: 0.9 x Sol
Color indices: B-V= +0.68, U-B= +0.25, R-I= +0.24
Diameter: 0.96 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 1.0 A.U.s
Angular size of star in sky in CZ: 0.533264 degrees

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