Eggen/Greenstein white dwarf 252

light-years

Catalog numbers:
     Gliese & Jahreiss (GJ) 2077, Eggen/Greenstein white dwarf (EG) 252, Luyten Two-Tenth (LTT) 12680
Arity: singular
Right Ascension and Declination: 9h59m8s, +14°55'53" (epoch 1950.0)
Distance from Sol: 70.9 light-years (21.7 parsecs)
Standard error in distance: 9.8039%
Source for distance: Gliese
Celestial (X,Y,Z) coordinates in ly: -59.2, 34.5, 18.3
Galactic (X,Y,Z) coordinates in ly: -34.9, -31.1, 53.3
Proper motion: 0.314 arcsec/yr (274.0° from north)
Radial Velocity: -140 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 42.7, 58.8, -124

What do all these fields mean?


Spectral class: DC7
Luminosity Class: wd
Apparent visual magnitude: +15.37
Absolute visual magnitude: +13.68
Visual luminosity: 0.00029 x Sol
Color indices: B-V= +0.36, U-B= -0.49
Comfort Zone (visual): 0.017 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.