Cape Photographic Durchmusterung -52°2830

Catalog numbers:
Gliese (Gl) 368.1, Henry Draper (HD) 85228, Cape Photographic Durchmusterung (CPD) -52°2830, Hipparcos Input Catalog (HIC) 48133, Smithsonian Astrophysical Observatory (SAO) 237371
Arity: binary
Right Ascension and Declination: 9h48m46.683s, -52°36'56.4" (epoch 2000.0)
Distance from Sol: 85.5 light-years (26.2 parsecs)
Standard error in distance: 2.2803%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -43.6, 28.1, -68.0
Galactic (X,Y,Z) coordinates in ly: 11.2, -84.8, 1.29
Proper motion: 0.358 arcsec/yr (312.5° from north)
Radial Velocity: 4.4 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -43.5, -10.2, 2.83

What do all these fields mean?

Data for A and B's orbit around one other:
Combined absolute visual magnitude: +5.81
Combined visual luminosity: 0.41 x Sol
Observed Separation: 36.7 A.U.s
Year of separation observation: 1943
As seen from A:
B would appear as magnitude -13.84
As seen from B:
A would appear as magnitude -17.91

Component A:
Spectral class: K1
Luminosity Class: V
Apparent visual magnitude: +7.93
Absolute visual magnitude: +5.84
Visual luminosity: 0.40 x Sol
Diameter: 0.83 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.63 A.U.s
Angular size of star in sky in CZ: 0.697086 degrees

Component B:
Spectral class: M
Luminosity Class: V
Apparent visual magnitude: +12.00
Absolute visual magnitude: +9.91
Visual luminosity: 0.0095 x Sol
Diameter: 0.48 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.097 A.U.s
Angular size of star in sky in CZ: 2.627178 degrees

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