Gliese 275.2

light-years

Catalog numbers:
     Gliese (Gl) 275.2
Arity: binary
Right Ascension and Declination: 7h27m2s, +48°19'23" (epoch 1950.0)
Distance from Sol: 37.7 light-years (11.6 parsecs)
Standard error in distance: 2.5901%
Source for distance: Gliese
Celestial (X,Y,Z) coordinates in ly: -9.29, 23.3, 28.2
Galactic (X,Y,Z) coordinates in ly: -33.3, 5.90, 16.6
Proper motion: 1.295 arcsec/yr (189.8° from north)
Source for proper motion: Gliese

What do all these fields mean?

Data for A and B's orbit around one other:
Combined absolute visual magnitude: +12.90
Combined visual luminosity: 0.00060 x Sol
Observed Separation: 1272 A.U.s
As seen from A:
     B would appear as magnitude -1.73
As seen from B:
     A would appear as magnitude -2.80


Component A:
Catalog numbers:
     Giclas (G) 107-69, Luyten Half-Second (LHS) 229
Spectral class: M5
Luminosity Class: VI
Apparent visual magnitude: +13.56
Absolute visual magnitude: +13.25
Visual luminosity: 0.00044 x Sol
Color indices: B-V= +1.71, U-B= +1.22
Comfort Zone (visual): 0.021 A.U.s


Component B:
Catalog numbers:
     Giclas (G) 107-70, Luyten Half-Second (LHS) 230, Eggen/Greenstein white dwarf (EG) 52
Right Ascension and Declination: 7h27m6s, +48°17'48" (epoch 1950.0)
Celestial (X,Y,Z) coordinates in ly: -9.31, 23.3, 28.2
Galactic (X,Y,Z) coordinates in ly: -33.3, 5.88, 16.6
Spectral class: DC
Luminosity Class: wd
Apparent visual magnitude: +14.63
Absolute visual magnitude: +14.32
Visual luminosity: 0.00016 x Sol
Color indices: B-V= +0.99, U-B= +0.36
Diameter: 0.0149 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.013 A.U.s
Angular size of star in sky in CZ: 0.621031 degrees

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