S.W. Burnham 1003

Catalog numbers:
Gliese (Gl) 154.1, Henry Draper (HD) 23588, Cordoba Durchmusterung (CD) -28°1276, Hipparcos Input Catalog (HIC) 17544, Smithsonian Astrophysical Observatory (SAO) 168807, Aitken Double Star (ADS) 2756, UGPMF 69, S.W. Burnham (BU) 1003
Arity: binary
Right Ascension and Declination: 3h45m24.24s, -27°51'44.2" (epoch 2000.0)
Distance from Sol: 71.0 light-years (21.8 parsecs)
Standard error in distance: 2.9772%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: 34.8, 52.2, -33.2
Galactic (X,Y,Z) coordinates in ly: -31.9, -31.1, -55.3
Proper motion: 0.364 arcsec/yr (63.6° from north)
Radial Velocity: 32.9 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -42.3, -26.4, -3.02

What do all these fields mean?

Data for A and B's orbit around one other:
Combined absolute visual magnitude: +6.51
Combined visual luminosity: 0.22 x Sol
Period: 425 years
Semimajor Axis: 60.1 A.U.s
Eccentricity: 0.28
Periastron distance: 43.3 A.U.s
Apastron distance: 76.9 A.U.s
Year in which periastron occurs: 1983
Source for orbit data: J. Hopmann
As seen from A:
     At periastron, B would appear as magnitude -13.48
     At apastron, B would appear as magnitude -12.23
As seen from B:
     At periastron, A would appear as magnitude -16.83
     At apastron, A would appear as magnitude -15.58

Component A:
Spectral class: K5
Luminosity Class: V
Apparent visual magnitude: +8.25
Absolute visual magnitude: +6.56
Visual luminosity: 0.21 x Sol
Comfort Zone (visual): 0.45 A.U.s

Component B:
Spectral class: M3
Luminosity Class: V
Apparent visual magnitude: +11.60
Absolute visual magnitude: +9.91
Visual luminosity: 0.0094 x Sol
Comfort Zone (visual): 0.097 A.U.s

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