Bonner Durchmusterung +31°434

Catalog numbers:
Gliese (Gl) 99, Bonner Durchmusterung (BD) +31°434, Giclas (G) 74-27, Hipparcos Input Catalog (HIC) 11542, Vyssotsky McCormick (McC) 393
Arity: binary
Right Ascension and Declination: 2h28m46.42s, +32°15'33.8" (epoch 2000.0)
Distance from Sol: 84.3 light-years (25.8 parsecs)
Standard error in distance: 5.3082%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: 56.8, 43.1, 45.0
Galactic (X,Y,Z) coordinates in ly: -63.1, 42.0, -36.7
Proper motion: 0.421 arcsec/yr (72.0° from north)
Radial Velocity: -9.7 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -26.4, -28.0, 35.6

What do all these fields mean?

Data for A and B's orbit around one other:
Combined spectrum: M0p V
Combined absolute visual magnitude: +7.53
Combined visual luminosity: 0.085 x Sol
Observed Separation: 6.72 A.U.s
Year of separation observation: 1959
As seen from A:
B would appear as magnitude -19.00
As seen from B:
A would appear as magnitude -19.30

Data for A and B's orbit, take 2:
Observed Separation: 3.87 A.U.s
Year of separation observation: 1960
As seen from A:
B would appear as magnitude -20.19
As seen from B:
A would appear as magnitude -20.49

Component A:
Apparent visual magnitude: +10.20
Absolute visual magnitude: +8.14
Visual luminosity: 0.048 x Sol
Comfort Zone (visual): 0.22 A.U.s

Component B:
Apparent visual magnitude: +10.50
Absolute visual magnitude: +8.44
Visual luminosity: 0.037 x Sol
Comfort Zone (visual): 0.19 A.U.s

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