Bonner Durchmusterung +253173


Catalog numbers:
     Gliese (Gl) 649, Bonner Durchmusterung (BD) +253173, Giclas (G) 169-38, Luyten Half-Second (LHS) 3257, Hipparcos Input Catalog (HIC) 83043, Vyssotsky McCormick (McC) 785
Arity: singular
Right Ascension and Declination: 16h58m8.875s, +25°44'39.11" (epoch 2000.0)
Distance from Sol: 33.7 light-years (10.3 parsecs)
Standard error in distance: 1.5044%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -8.08, -29.2, 14.6
Galactic (X,Y,Z) coordinates in ly: 19.0, 20.1, 19.2
Proper motion: 0.527 arcsec/yr (191.9° from north)
Radial Velocity: 4.3 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 21.9, -14.2, 0.70

What do all these fields mean?

Spectral class: M2
Luminosity Class: V
Apparent visual magnitude: +9.70
Absolute visual magnitude: +9.63
Visual luminosity: 0.012 x Sol
Color indices: B-V= +1.50, U-B= +1.20, R-I= +0.85
Comfort Zone (visual): 0.11 A.U.s

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