Bonner Durchmusterung +10°2347

light-years

Catalog numbers:
     Henry Draper (HD) 103112, Bonner Durchmusterung (BD) +10°2347, Hipparcos Input Catalog (HIC) 57888, Smithsonian Astrophysical Observatory (SAO) 99835, Luyten Two-Tenth (LTT) 13274
Arity: binary
Right Ascension and Declination: 11h52m20.923s, +9°56'53.08" (epoch 2000.0)
Distance from Sol: 52 light-years (16 parsecs)
Standard error in distance: 14.8649%
Source for distance: Gliese
Celestial (X,Y,Z) coordinates in ly: -51, 1.7, 8.9
Galactic (X,Y,Z) coordinates in ly: -2.4, -19, 48
Proper motion: 0.356 arcsec/yr (286.1° from north)
Radial Velocity: 10.7 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -27, -9.0, 6.6

What do all these fields mean?

Data for A and B's orbit around one other:
Combined absolute visual magnitude: +6.54
Combined visual luminosity: 0.2 x Sol
Observed Separation: 3683 A.U.s
As seen from A:
     B would appear as magnitude +0.26
As seen from B:
     A would appear as magnitude -7.20


Component A:
Spectral class: K0
Apparent visual magnitude: +7.54
Absolute visual magnitude: +6.54
Visual luminosity: 0.2 x Sol
Color indices: B-V= +1.06, U-B= +0.90, R-I= +0.36
Comfort Zone (visual): 0.5 A.U.s


Component B:
Catalog numbers:
     Luyten Palomar (LP) 493-64
Right Ascension and Declination: 11h49m45s, +10°17'36" (epoch 1950.0)
Celestial (X,Y,Z) coordinates in ly: -51, 2.3, 9.3
Galactic (X,Y,Z) coordinates in ly: -3.0, -19, 48
Proper motion: 0.34 arcsec/yr (289.0° from north)
Radial Velocity: 10.7 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -26, -7.5, 6.9
Spectral class: M
Apparent visual magnitude: +15.00
Absolute visual magnitude: +14.00
Visual luminosity: 0.0002 x Sol
Comfort Zone (visual): 0.01 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.