Bonner Durchmusterung +24°2733

light-years

Catalog numbers:
     Gliese (Gl) 548, Bonner Durchmusterung (BD) +24°2733, Hipparcos Input Catalog (HIC) 70529, Smithsonian Astrophysical Observatory (SAO) 83344, Vyssotsky McCormick (McC) 153
Arity: binary
Right Ascension and Declination: 14h25m43.48s, +23°37'0.8" (epoch 2000.0)
Distance from Sol: 54.8 light-years (16.8 parsecs)
Standard error in distance: 2.8236%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -40.4, -29.8, 21.9
Galactic (X,Y,Z) coordinates in ly: 18.1, 9.87, 50.8
Proper motion: 1.376 arcsec/yr (145.0° from north)
Radial Velocity: 8.6 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 105, -23.1, -23.6

What do all these fields mean?

Data for A and B's orbit around one other:
Combined absolute visual magnitude: +8.00
Combined visual luminosity: 0.055 x Sol
Observed Separation: 722 A.U.s
As seen from A:
     B would appear as magnitude -8.40
As seen from B:
     A would appear as magnitude -8.63


Component A:
Catalog numbers:
     Giclas (G) 166-27, Luyten Half-Second (LHS) 371
Spectral class: M1
Luminosity Class: V
Apparent visual magnitude: +9.77
Absolute visual magnitude: +8.65
Visual luminosity: 0.030 x Sol
Color indices: B-V= +1.44, U-B= +1.26, R-I= +0.73
Diameter: 0.65 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.17 A.U.s
Angular size of star in sky in CZ: 1.989651 degrees


Component B:
Catalog numbers:
     Giclas (G) 166-28, Luyten Half-Second (LHS) 372
Right Ascension and Declination: 14h23m27s, +23°51'36" (epoch 1950.0)
Celestial (X,Y,Z) coordinates in ly: -40.6, -29.3, 22.2
Galactic (X,Y,Z) coordinates in ly: 17.6, 9.71, 51.0
Proper motion: 1.373 arcsec/yr (144.7° from north)
Radial Velocity: 7.7 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 105, -23.0, -23.5
Spectral class: M2
Luminosity Class: V
Apparent visual magnitude: +10.00
Absolute visual magnitude: +8.87
Visual luminosity: 0.025 x Sol
Color indices: B-V= +1.46, U-B= +1.26, R-I= +0.79
Diameter: 0.63 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.16 A.U.s
Angular size of star in sky in CZ: 2.142922 degrees

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