Bonner Durchmusterung +39°2376

light-years

Catalog numbers:
     Gliese (Gl) 400, Bonner Durchmusterung (BD) +39°2376, Hipparcos Input Catalog (HIC) 52600, Smithsonian Astrophysical Observatory (SAO) 62230, Aitken Double Star (ADS) 7915, Vyssotsky McCormick (McC) 33
Arity: binary
Right Ascension and Declination: 10h45m21.475s, +38°30'42.92" (epoch 2000.0)
Distance from Sol: 46.0 light-years (14.1 parsecs)
Standard error in distance: 3.2227%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -34.1, 11.5, 28.7
Galactic (X,Y,Z) coordinates in ly: -21.6, -0.66, 40.6
Proper motion: 0.16 arcsec/yr (346.5° from north)
Radial Velocity: -3.2 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -3.16, 9.40, -5.15

What do all these fields mean?

Data for A and B's orbit around one other:
Combined absolute visual magnitude: +8.48
Combined visual luminosity: 0.035 x Sol
Observed Separation: 16.9 A.U.s
Year of separation observation: 1896
As seen from A:
     B would appear as magnitude -13.98
As seen from B:
     A would appear as magnitude -16.88

Data for A and B's orbit, take 2:
Observed Separation: 9.88 A.U.s
Year of separation observation: 1965
As seen from A:
     B would appear as magnitude -15.15
As seen from B:
     A would appear as magnitude -18.05


Component A:
Spectral class: M2
Luminosity Class: V
Apparent visual magnitude: +9.30
Absolute visual magnitude: +8.55
Visual luminosity: 0.033 x Sol
Diameter: 0.64 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.18 A.U.s
Angular size of star in sky in CZ: 1.877137 degrees


Component B:
Proper motion: 0.16 arcsec/yr (346.5° from north)
Radial Velocity: -4.1 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -2.73, 9.41, -5.95
Spectral class: M
Luminosity Class: V
Apparent visual magnitude: +12.20
Absolute visual magnitude: +11.45
Visual luminosity: 0.0023 x Sol
Diameter: 0.35 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.048 A.U.s
Angular size of star in sky in CZ: 3.903126 degrees

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