Eggen/Greenstein white dwarf 155

light-years

Catalog numbers:
     Gliese & Jahreiss (GJ) 1273, Luyten Half-Second (LHS) 3857, Eggen/Greenstein white dwarf (EG) 155, Luyten Two-Tenth (LTT) 18580
Arity: singular
Right Ascension and Declination: 22h46m39s, +22°20'30" (epoch 1950.0)
Distance from Sol: 62.0 light-years (19.0 parsecs)
Standard error in distance: 7.231%
Source for distance: Gliese
Celestial (X,Y,Z) coordinates in ly: 54.4, -18.0, 23.6
Galactic (X,Y,Z) coordinates in ly: 0.69, 52.5, -33.0
Proper motion: 0.506 arcsec/yr (86.2° from north)
Radial Velocity: 94 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -39.2, 68.6, -68.4

What do all these fields mean?


Spectral class: DA5
Luminosity Class: wd
Apparent visual magnitude: +14.36
Absolute visual magnitude: +12.96
Visual luminosity: 0.00057 x Sol
Color indices: B-V= +0.19, U-B= -0.68
Diameter: 0.0085 x Sol
Comfort Zone (visual): 0.024 A.U.s
Angular size of star in sky in CZ: 0.190240 degrees

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