Ross 89

light-years

Catalog numbers:
     Gliese & Jahreiss (GJ) 1127, Bonner Durchmusterung (BD) +23°2121, Hipparcos Input Catalog (HIC) 47201, Vyssotsky McCormick (McC) 270, Ross 89, Luyten Two-Tenth (LTT) 12540
Arity: singular
Right Ascension and Declination: 9h37m11.367s, +22°41'39.02" (epoch 2000.0)
Distance from Sol: 71.7 light-years (22.0 parsecs)
Standard error in distance: 3.1702%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -53.7, 38.6, 27.7
Galactic (X,Y,Z) coordinates in ly: -43.4, -23.2, 52.0
Proper motion: 0.231 arcsec/yr (219.3° from north)
Radial Velocity: -36.9 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 16.0, -6.77, -40.5

What do all these fields mean?


Spectral class: M0
Luminosity Class: V
Apparent visual magnitude: +9.47
Absolute visual magnitude: +7.76
Visual luminosity: 0.068 x Sol
Color indices: B-V= +1.28, U-B= +1.27, R-I= +0.52
Comfort Zone (visual): 0.26 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.