Bonner Durchmusterung +27°1775

light-years

Catalog numbers:
     Gliese (Gl) 354.1, Henry Draper (HD) 82443, Bonner Durchmusterung (BD) +27°1775, Hipparcos Input Catalog (HIC) 46843, Smithsonian Astrophysical Observatory (SAO) 80897, Woolley (Wo) 9301
Age: 10 million years
Source for age: Don C. Barry, "Chromospheric Age Dependence of…", APJ 334
Arity: binary
Right Ascension and Declination: 9h32m43.775s, +26°59'18.37" (epoch 2000.0)
Distance from Sol: 57.9 light-years (17.7 parsecs)
Standard error in distance: 1.5549%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -41.3, 30.9, 26.3
Galactic (X,Y,Z) coordinates in ly: -36.9, -14.7, 42.1
Proper motion: 0.292 arcsec/yr (209.6° from north)
Radial Velocity: 9.3 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -10.2, -23.8, -4.50

What do all these fields mean?

Data for A and B's orbit around one other:
Combined absolute visual magnitude: +5.76
Combined visual luminosity: 0.43 x Sol
Observed Separation: 1154 A.U.s
As seen from A:
     B would appear as magnitude -1.01
As seen from B:
     A would appear as magnitude -10.50


Component A:
Spectral class: G9
Luminosity Class: V
Apparent visual magnitude: +7.01
Absolute visual magnitude: +5.76
Visual luminosity: 0.43 x Sol
Color indices: B-V= +0.77, U-B= +0.33
Diameter: 0.87 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.66 A.U.s
Angular size of star in sky in CZ: 0.706708 degrees


Component B:
Catalog numbers:
     Luyten Palomar (LP) 314-20
Right Ascension and Declination: 9h29m54s, +27°13'12" (epoch 1950.0)
Celestial (X,Y,Z) coordinates in ly: -40.8, 31.4, 26.5
Galactic (X,Y,Z) coordinates in ly: -37.4, -14.5, 41.7
Proper motion: 0.274 arcsec/yr (210.0° from north)
Radial Velocity: 9.3 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -10.2, -22.3, -4.05
Spectral class: M
Luminosity Class: V
Apparent visual magnitude: +16.50
Absolute visual magnitude: +15.25
Visual luminosity: 0.000069 x Sol
Comfort Zone (visual): 0.0083 A.U.s

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