Hough 260

light-years

Catalog numbers:
     Gliese (Gl) 509, Henry Draper (HD) 116495, Bonner Durchmusterung (BD) +29°2405, Giclas (G) 164-71, Luyten Half-Second (LHS) 2728, Hipparcos Input Catalog (HIC) 65343, Smithsonian Astrophysical Observatory (SAO) 82816, Aitken Double Star (ADS) 8887, Vyssotsky McCormick (McC) 301, Hough (HO) 260
Arity: binary
Right Ascension and Declination: 13h23m32.742s, +29°14'14.31" (epoch 2000.0)
Distance from Sol: 60.4 light-years (18.5 parsecs)
Standard error in distance: 3.7968%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -49.3, -18.8, 29.5
Galactic (X,Y,Z) coordinates in ly: 5.45, 6.17, 59.9
Proper motion: 0.539 arcsec/yr (295.7° from north)
Radial Velocity: -39 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -49.7, -13.1, -33.5

What do all these fields mean?

Data for A and B's orbit around one other:
Combined absolute visual magnitude: +7.56
Combined visual luminosity: 0.082 x Sol
Period: 229 years
Semimajor Axis: 39.7 A.U.s
Eccentricity: 0.835
Periastron distance: 6.54 A.U.s
Apastron distance: 72.8 A.U.s
Year in which periastron occurs: 1883.6
Source for orbit data: C. Ambruster
As seen from A:
     At periastron, B would appear as magnitude -19.03
     At apastron, B would appear as magnitude -13.80
As seen from B:
     At periastron, A would appear as magnitude -19.31
     At apastron, A would appear as magnitude -14.08


Component A:
Spectral class: M0
Luminosity Class: V
Apparent visual magnitude: +9.52
Absolute visual magnitude: +8.18
Visual luminosity: 0.047 x Sol
Diameter: 0.66 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.22 A.U.s
Angular size of star in sky in CZ: 1.631349 degrees


Component B:
Spectral class: K6
Luminosity Class: V
Apparent visual magnitude: +9.80
Absolute visual magnitude: +8.46
Visual luminosity: 0.036 x Sol
Diameter: 0.65 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.19 A.U.s
Angular size of star in sky in CZ: 1.827760 degrees

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