What do all these fields mean?
Data for Aa and Ab's orbit around one other:
Combined spectrum: G0e V
Combined apparent visual magnitude: +4.33
Combined absolute visual magnitude: +4.24
Combined visual luminosity: 1.8 x Sol
Period: 1.8321 years
Standard Error in period: 0.070235%
Semimajor Axis: 0.6 A.U.s
Eccentricity: 0.56
Periastron distance: 0.3 A.U.s
Apastron distance: 0.9 A.U.s
Year in which periastron occurs: 1935.41
Source for orbit data: W.D. Heintz
Comfort Zone (visual) around both: 1.3 A.U.s
Data for Ba and Bb's orbit around one other:
Combined spectrum: G0e V
Combined apparent visual magnitude: +4.80
Combined absolute visual magnitude: +4.71
Combined visual luminosity: 1.1 x Sol
Period: 3.97998 days
Semimajor Axis: 0.06 A.U.s
Eccentricity: 0
Periastron distance: 0.06 A.U.s
Apastron distance: 0.06 A.U.s
Source for orbit data: Burnham's Celestial Handbook
Comfort Zone (visual) around both: 1.1 A.U.s
Data for (Aa-Ab) and (Ba-Bb)'s orbit around one other:
Combined absolute visual magnitude: +3.70
Combined visual luminosity: 2.9 x Sol
Period: 59.84 years
Semimajor Axis: 26 A.U.s
Eccentricity: 0.414
Periastron distance: 15 A.U.s
Apastron distance: 37 A.U.s
Year in which periastron occurs: 1935.17
Source for orbit data: W.D. Heintz
As seen from (Aa-Ab):
At periastron, (Ba-Bb) would appear as magnitude -20.92
At apastron, (Ba-Bb) would appear as magnitude -19.00
As seen from (Ba-Bb):
At periastron, (Aa-Ab) would appear as magnitude -21.39
At apastron, (Aa-Ab) would appear as magnitude -19.47
Component Aa:
Catalog numbers:
Henry Draper (HD) 98231, Luyten Half-Second (LHS) 2390, Hoffleit Bright Star (HR) 4375
Diameter: 0.97 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Component Ab:
Catalog numbers:
Henry Draper (HD) 98231, Luyten Half-Second (LHS) 2390, Hoffleit Bright Star (HR) 4375
Component Ba:
Catalog numbers:
Henry Draper (HD) 98230, Luyten Half-Second (LHS) 2391, Hipparcos Input Catalog (HIC) 55203, Hoffleit Bright Star (HR) 4374
Right Ascension and Declination: 11h18m10.95s, +31°31'45.7" (epoch 2000.0)
Celestial (X,Y,Z) coordinates in ly: -28, 5.3, 18
Galactic (X,Y,Z) coordinates in ly: -11, -3.2, 32
Proper motion: 0.727 arcsec/yr (216.2° from north)
Radial Velocity: -13.6 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -3.4, -33, -19
Diameter: 1.8 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Component Bb:
Catalog numbers:
Henry Draper (HD) 98230, Luyten Half-Second (LHS) 2391, Hipparcos Input Catalog (HIC) 55203, Hoffleit Bright Star (HR) 4374
Right Ascension and Declination: 11h18m10.95s, +31°31'45.7" (epoch 2000.0)
Celestial (X,Y,Z) coordinates in ly: -28, 5.3, 18
Galactic (X,Y,Z) coordinates in ly: -11, -3.2, 32
Proper motion: 0.727 arcsec/yr (216.2° from north)
Radial Velocity: -13.6 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -3.4, -33, -19