Bonner Durchmusterung +0°4810

light-years

Catalog numbers:
     Gliese (Gl) 846, Henry Draper (HD) 209290, Bonner Durchmusterung (BD) +0°4810, Luyten Half-Second (LHS) 3745, Hipparcos Input Catalog (HIC) 108782, Vyssotsky McCormick (McC) 335
Arity: singular
Right Ascension and Declination: 22h2m10.226s, +1°24'1.67" (epoch 2000.0)
Distance from Sol: 33.6 light-years (10.3 parsecs)
Standard error in distance: 1.5031%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: 29.3, -16.5, 0.82
Galactic (X,Y,Z) coordinates in ly: 12.1, 22.5, -21.9
Proper motion: 0.532 arcsec/yr (241.0° from north)
Radial Velocity: 18.5 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 30.9, 6.59, -4.62

What do all these fields mean?


Spectral class: M0.5
Luminosity Class: V
Apparent visual magnitude: +9.17
Absolute visual magnitude: +9.10
Visual luminosity: 0.020 x Sol
Color indices: B-V= +1.48, U-B= +1.21, R-I= +0.75
Diameter: 0.65 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.14 A.U.s
Angular size of star in sky in CZ: 2.453891 degrees

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