88 Leonis

light-years
Proper names: 88 Leonis
Catalog numbers:
     Henry Draper (HD) 100180, Bonner Durchmusterung (BD) +15°2345, Hipparcos Input Catalog (HIC) 56242, Smithsonian Astrophysical Observatory (SAO) 99648, Aitken Double Star (ADS) 8196, Hoffleit Bright Star (HR) 4437, Wolf 401
Arity: binary
Right Ascension and Declination: 11h31m44.95s, +14°21'52.7" (epoch 2000.0)
Distance from Sol: 75.1 light-years (23.0 parsecs)
Standard error in distance: 2.4708%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -72.2, 8.95, 18.6
Galactic (X,Y,Z) coordinates in ly: -12.0, -25.7, 69.5
Proper motion: 0.383 arcsec/yr (240.1° from north)
Radial Velocity: -4.2 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -21.5, -30.4, -19.5

What do all these fields mean?

Data for A and B's orbit around one other:
Combined absolute visual magnitude: +4.39
Combined visual luminosity: 1.53 x Sol
Observed Separation: 345 A.U.s
As seen from A:
     B would appear as magnitude -11.47
As seen from B:
     A would appear as magnitude -14.42


Component A:
Catalog numbers:
     Luyten Two-Tenth (LTT) 13145
Spectral class: G0
Luminosity Class: V
Apparent visual magnitude: +6.27
Absolute visual magnitude: +4.46
Visual luminosity: 1.43 x Sol
Color indices: B-V= +0.57, U-B= +0.07
Comfort Zone (visual): 1.20 A.U.s


Component B:
Catalog numbers:
     Luyten Two-Tenth (LTT) 13146
Proper motion: 0.383 arcsec/yr (240.1° from north)
Radial Velocity: -10.3 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -20.5, -28.3, -25.1
Spectral class: K6
Luminosity Class: IV
Apparent visual magnitude: +9.22
Absolute visual magnitude: +7.41
Visual luminosity: 0.095 x Sol
Color indices: B-V= +1.14, U-B= +1.03
Comfort Zone (visual): 0.31 A.U.s

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