Eggen/Greenstein white dwarf 283

light-years

Catalog numbers:
     Gliese & Jahreiss (GJ) 1275, Giclas (G) 128-7, Luyten Half-Second (LHS) 529, Eggen/Greenstein white dwarf (EG) 283
Arity: singular
Right Ascension and Declination: 22h48m56s, +29°23'41" (epoch 1950.0)
Distance from Sol: 67.5 light-years (20.7 parsecs)
Standard error in distance: 8.1749%
Source for distance: Gliese
Celestial (X,Y,Z) coordinates in ly: 56.0, -18.0, 33.1
Galactic (X,Y,Z) coordinates in ly: -4.12, 60.4, -30.0
Proper motion: 1.269 arcsec/yr (83.2° from north)
Source for proper motion: Gliese

What do all these fields mean?


Spectral class: DA9
Luminosity Class: wd
Apparent visual magnitude: +15.52
Absolute visual magnitude: +13.94
Visual luminosity: 0.00023 x Sol
Color indices: B-V= +0.63, U-B= -0.10
Diameter: 0.016 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.015 A.U.s
Angular size of star in sky in CZ: 0.561015 degrees

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