What do all these fields mean?
Data for A and B's orbit around one other:
Combined absolute visual magnitude: +7.97
Combined visual luminosity: 0.056 x Sol
Period: 975 years
Semimajor Axis: 103 A.U.s
Eccentricity: 0.28
Periastron distance: 74.1 A.U.s
Apastron distance: 132 A.U.s
Year in which periastron occurs: 2260
Source for orbit data: K. Chang
As seen from A:
At periastron, B would appear as magnitude -13.47
At apastron, B would appear as magnitude -12.22
As seen from B:
At periastron, A would appear as magnitude -13.53
At apastron, A would appear as magnitude -12.28
Component A:
NOTE: This star is actually a close-orbiting binary pair. The data below are for both sub-components of the pair combined.
Catalog numbers:
Henry Draper (HD) 79210, Bonner Durchmusterung (BD) +53°1320, Giclas (G) 195-17, Luyten Half-Second (LHS) 260, Hipparcos Input Catalog (HIC) 45343, Smithsonian Astrophysical Observatory (SAO) 27178, Luyten FT (LFT) 634
Spectral class: M0
Luminosity Class: V
Apparent visual magnitude: +7.64
Absolute visual magnitude: +8.70
Visual luminosity: 0.029 x Sol
Color indices: B-V= +1.39, U-B= +1.20, R-I= +0.68
Mass: 0.58 x Sol
Diameter: 0.63 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.17 A.U.s
Orbital period in CZ: 33.6234 days
Tidal index in CZ: 118.004
Angular size of star in sky in CZ: 1.990820 degrees
Component B:
NOTE: This star is actually a close-orbiting binary pair. The data below are for both sub-components of the pair combined.
Catalog numbers:
Henry Draper (HD) 79211, Bonner Durchmusterung (BD) +53°1321, Giclas (G) 195-18, Luyten Half-Second (LHS) 261, Hipparcos Input Catalog (HIC) 120005, Smithsonian Astrophysical Observatory (SAO) 27179, AGK3 Reference (AGK3R) 8302, Luyten FT (LFT) 635
Right Ascension and Declination: 9h14m24.71s, +52°41'11" (epoch 2000.0)
Celestial (X,Y,Z) coordinates in ly: -9.13, 8.05, 16.0
Galactic (X,Y,Z) coordinates in ly: -14.1, 3.76, 13.7
Proper motion: 1.69 arcsec/yr (246.9° from north)
Radial Velocity: 14.7 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -44.5, -16.8, -19.7
Spectral class: K7
Luminosity Class: V
Apparent visual magnitude: +7.70
Absolute visual magnitude: +8.75
Visual luminosity: 0.028 x Sol
Color indices: B-V= +1.42, U-B= +1.25, R-I= +0.69
Mass: 0.58 x Sol
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
Orbital period in CZ: 32.3922 days
Tidal index in CZ: 127.145
Angular size of star in sky in CZ: 2.089400 degrees