Eggen/Greenstein white dwarf 225

light-years

Catalog numbers:
     Eggen/Greenstein white dwarf (EG) 225, Giclas white Dwarf (GD) 215
Arity: singular
Right Ascension and Declination: 18h40m57s, +4°17'18" (epoch 1950.0)
Distance from Sol: 80.7 light-years (24.8 parsecs)
Standard error in distance: 7.7626%
Source for distance: Gliese
Celestial (X,Y,Z) coordinates in ly: 14.3, -79.2, 6.04
Galactic (X,Y,Z) coordinates in ly: 65.3, 47.2, 5.29
Proper motion: 0.14 arcsec/yr (302.0° from north)
Radial Velocity: 46 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 35.5, 27.4, 19.3

What do all these fields mean?


Spectral class: DA6
Luminosity Class: wd
Apparent visual magnitude: +14.92
Absolute visual magnitude: +12.95
Visual luminosity: 0.00057 x Sol
Color indices: B-V= +0.14, U-B= -0.59
Comfort Zone (visual): 0.024 A.U.s

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