S.W. Burnham 996

Catalog numbers:
Gliese (Gl) 909, Henry Draper (HD) 223778, Bonner Durchmusterung (BD) +74°1047, Giclas (G) 242-42, Hipparcos Input Catalog (HIC) 117712, Smithsonian Astrophysical Observatory (SAO) 10879, Aitken Double Star (ADS) 17062, Hoffleit Bright Star (HR) 9038, S.W. Burnham (BU) 996
Arity: binary
Right Ascension and Declination: 23h52m25.003s, +75°32'40.71" (epoch 2000.0)
Distance from Sol: 35.19 light-years (10.79 parsecs)
Standard error in distance: 0.5899%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: 8.780, -0.291, 34.08
Galactic (X,Y,Z) coordinates in ly: -16.81, 29.83, 8.120
Proper motion: 0.309 arcsec/yr (79.6° from north)
Radial Velocity: 1.7 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -14.64, -6.175, -0.275

What do all these fields mean?

Data for A and B's orbit around one other:
Combined absolute visual magnitude: +6.23
Combined visual luminosity: 0.281 x Sol
Observed Separation: 49.63 A.U.s
Year of separation observation: 1958
As seen from A:
B would appear as magnitude -11.56
As seen from B:
A would appear as magnitude -16.86

Component A:
Spectral class: K3
Luminosity Class: V
Apparent visual magnitude: +6.40
Absolute visual magnitude: +6.23
Visual luminosity: 0.279 x Sol
Color indices: B-V= +0.98, U-B= +0.71, R-I= +0.38
Diameter: 0.83 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.528 A.U.s
Angular size of star in sky in CZ: 0.837326 degrees

Component B:
Spectral class: M2
Luminosity Class: V
Apparent visual magnitude: +11.70
Absolute visual magnitude: +11.53
Visual luminosity: 0.00212 x Sol
Diameter: 0.37 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.0460 A.U.s
Angular size of star in sky in CZ: 4.286181 degrees

Data for this star system were most recently updated on 4-April-2001.