Giclas 244-37

light-years

Arity: binary
Right Ascension and Declination: 1h48m12s, +64°11'24" (epoch 1950.0)
Distance from Sol: 49 light-years (15 parsecs)
Standard error in distance: 16.25%
Source for distance: Gliese
Celestial (X,Y,Z) coordinates in ly: 19, 9.6, 44
Galactic (X,Y,Z) coordinates in ly: -31, 38, 2.0
Proper motion: 0.28 arcsec/yr (138.0° from north)
Radial Velocity: -15 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -3.3, -22, -12

What do all these fields mean?

Data for A and B's orbit around one other:
Combined absolute visual magnitude: +10.44
Combined visual luminosity: 0.006 x Sol
Observed Separation: 149 A.U.s
As seen from A:
     B would appear as magnitude -7.07
As seen from B:
     A would appear as magnitude -10.20


Component A:
Catalog numbers:
     Giclas (G) 244-37
Spectral class: M2
Luminosity Class: V
Apparent visual magnitude: +11.37
Absolute visual magnitude: +10.50
Visual luminosity: 0.005 x Sol
Color indices: R-I= +0.98
Comfort Zone (visual): 0.07 A.U.s


Component B:
Catalog numbers:
     Giclas (G) 244-36, Eggen/Greenstein white dwarf (EG) 268
Right Ascension and Declination: 1h48m12s, +64°11'11" (epoch 1950.0)
Celestial (X,Y,Z) coordinates in ly: 19, 9.6, 44
Galactic (X,Y,Z) coordinates in ly: -31, 38, 2.0
Spectral class: DA6
Luminosity Class: wd
Apparent visual magnitude: +14.50
Absolute visual magnitude: +13.63
Visual luminosity: 0.0003 x Sol
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.