Bonner Durchmusterung +33°1646

Catalog numbers:
Gliese & Jahreiss (GJ) 1108, Bonner Durchmusterung (BD) +33°1646, Hipparcos Input Catalog (HIC) 39896, Vyssotsky McCormick (McC) 250, Catalogue Astrographique (AC) +33°29235, Guide Star Catalog (GSC) 1983.13
Arity: binary
Right Ascension and Declination: 8h8m56.45s, +32°49'12.5" (epoch 2000.0)
Distance from Sol: 67.6 light-years (20.7 parsecs)
Standard error in distance: 6.1455%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -30.3, 48.0, 36.6
Galactic (X,Y,Z) coordinates in ly: -57.6, -9.29, 34.1
Proper motion: 0.219 arcsec/yr (194.3° from north)
Radial Velocity: 4 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -5.65, -19.9, -7.05

What do all these fields mean?

Data for A and B's orbit around one other:
Combined absolute visual magnitude: +8.19
Combined visual luminosity: 0.046 x Sol
Observed Separation: 255 A.U.s
As seen from A:
B would appear as magnitude -9.00
As seen from B:
A would appear as magnitude -11.22

Component A:
Spectral class: M0.5e
Luminosity Class: V
Apparent visual magnitude: +9.90
Absolute visual magnitude: +8.32
Visual luminosity: 0.041 x Sol
Color indices: B-V= +1.35, U-B= +1.13, R-I= +0.67
Comfort Zone (visual): 0.20 A.U.s

Component B:
Right Ascension and Declination: 8h5m45s, +32°57'54" (epoch 1950.0)
Celestial (X,Y,Z) coordinates in ly: -29.6, 48.4, 36.8
Galactic (X,Y,Z) coordinates in ly: -58.0, -8.98, 33.5
Spectral class: M3e
Luminosity Class: V
Apparent visual magnitude: +12.12
Absolute visual magnitude: +10.54
Visual luminosity: 0.0053 x Sol
Color indices: B-V= +1.53, R-I= +1.17
Comfort Zone (visual): 0.073 A.U.s

Data for this star system were most recently updated on 4-April-2001.