Luyten 205-128

light-years

Catalog numbers:
     Gliese (Gl) 693, Luyten Half-Second (LHS) 454, Hipparcos Input Catalog (HIC) 86990, Luyten (L) 205-128, Smethells (Sm) 3, UC 48
Arity: singular
Right Ascension and Declination: 17h46m34.328s, -57°19'8.55" (epoch 2000.0)
Distance from Sol: 19.0 light-years (5.81 parsecs)
Standard error in distance: 1.2737%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -0.60, -10.2, -16.0
Galactic (X,Y,Z) coordinates in ly: 16.7, -7.57, -4.90
Proper motion: 1.739 arcsec/yr (219.2° from north)
Radial Velocity: -115 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -118, 2.17, 38.9

What do all these fields mean?


Spectral class: M3.5
Luminosity Class: V
Apparent visual magnitude: +10.75
Absolute visual magnitude: +11.93
Visual luminosity: 0.0015 x Sol
Color indices: B-V= +1.65, U-B= +1.21, R-I= +1.11
Mass: 0.14 x Sol
Comfort Zone (visual): 0.038 A.U.s
Orbital period in CZ: 7.32193 days
Tidal index in CZ: 2488.45

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