Eggen/Greenstein white dwarf 431

light-years

Catalog numbers:
     Gliese & Jahreiss (GJ) 2074, Eggen/Greenstein white dwarf (EG) 431, PG 197-4
Arity: singular
Right Ascension and Declination: 9h39m21s, +7°11'0" (epoch 1950.0)
Distance from Sol: 56 light-years (17 parsecs)
Standard error in distance: 10.7692%
Source for distance: Gliese
Celestial (X,Y,Z) coordinates in ly: -46, 32, 7.0
Galactic (X,Y,Z) coordinates in ly: -28, -32, 37
Proper motion: 0.044 arcsec/yr (201.0° from north)
Source for proper motion: Gliese

What do all these fields mean?


Spectral class: DA7
Luminosity Class: wd
Apparent visual magnitude: +14.90
Absolute visual magnitude: +13.72
Visual luminosity: 0.0003 x Sol
Color indices: B-V= +0.30, U-B= -0.55
Comfort Zone (visual): 0.02 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.