Bonner Durchmusterung -17°6769

light-years

Catalog numbers:
     Gliese (Gl) 898, Henry Draper (HD) 221503, Bonner Durchmusterung (BD) -17°6769, Giclas (G) 273-68, Hipparcos Input Catalog (HIC) 116215, Smithsonian Astrophysical Observatory (SAO) 165756, Vyssotsky McCormick (McC) 864
Arity: singular
Points of interest:
     This star may be orbiting the Gliese 897 system.

Right Ascension and Declination: 23h32m49.51s, -16°50'47.1" (epoch 2000.0)
Distance from Sol: 45.5 light-years (13.9 parsecs)
Standard error in distance: 1.8615%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: 43.2, -5.15, -13.2
Galactic (X,Y,Z) coordinates in ly: 7.96, 13.8, -42.6
Proper motion: 0.39 arcsec/yr (126.8° from north)
Radial Velocity: 0.5 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -11.0, -21.3, -9.50

What do all these fields mean?


Spectral class: K5-M0
Luminosity Class: V
Apparent visual magnitude: +8.59
Absolute visual magnitude: +7.87
Visual luminosity: 0.062 x Sol
Color indices: B-V= +1.28, U-B= +1.22, R-I= +0.53
Diameter: 0.68 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.25 A.U.s
Angular size of star in sky in CZ: 1.457725 degrees

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