SZ Crateris

light-years
Proper names: SZ Crateris
Catalog numbers:
     Gliese (Gl) 425, Henry Draper (HD) 98712, Bonner Durchmusterung (BD) -19°3242, Hipparcos Input Catalog (HIC) 55454, Smithsonian Astrophysical Observatory (SAO) 179801, Aitken Double Star (ADS) 8138, Vyssotsky McCormick (McC) 608
Arity: binary
Right Ascension and Declination: 11h21m26.73s, -20°27'15" (epoch 2000.0)
Distance from Sol: 42.9 light-years (13.2 parsecs)
Standard error in distance: 2.1879%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -39.6, 6.73, -15.0
Galactic (X,Y,Z) coordinates in ly: 4.04, -33.7, 26.2
Proper motion: 0.233 arcsec/yr (126.6° from north)
Radial Velocity: 7.4 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 15.0, -5.94, 2.15

What do all these fields mean?

Data for A and B's orbit around one other:
Combined spectrum: K4-5 V
Combined absolute visual magnitude: +8.02
Combined visual luminosity: 0.054 x Sol
Observed Separation: 82.9 A.U.s
Year of separation observation: 1877
As seen from A:
     B would appear as magnitude -11.58
As seen from B:
     A would appear as magnitude -13.84

Data for A and B's orbit, take 2:
Observed Separation: 67.1 A.U.s
Year of separation observation: 1959
As seen from A:
     B would appear as magnitude -12.03
As seen from B:
     A would appear as magnitude -14.29


Component A:
Apparent visual magnitude: +8.74
Absolute visual magnitude: +8.14
Visual luminosity: 0.048 x Sol
Color indices: R-I= +0.58
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: 1.604010 degrees


Component B:
Spectral class: M
Luminosity Class: V
Apparent visual magnitude: +11.00
Absolute visual magnitude: +10.40
Visual luminosity: 0.0060 x Sol
Diameter: 0.42 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.077 A.U.s
Angular size of star in sky in CZ: 2.890246 degrees

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