Catalogue Astrographique +12°1155-87

light-years

Catalog numbers:
     Gliese (Gl) 642, Giclas (G) 138-67, Luyten Half-Second (LHS) 3251, Hipparcos Input Catalog (HIC) 82694, Catalogue Astrographique (AC) +12°1155-87
Arity: singular
Right Ascension and Declination: 16h54m12.006s, +11°54'53.12" (epoch 2000.0)
Distance from Sol: 62.2 light-years (19.1 parsecs)
Standard error in distance: 3.6213%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -17.2, -58.4, 12.8
Galactic (X,Y,Z) coordinates in ly: 45.9, 27.4, 31.9
Proper motion: 0.67 arcsec/yr (299.6° from north)
Radial Velocity: -67.3 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -78.7, -41.2, 17.4

What do all these fields mean?


Spectral class: M1.5
Luminosity Class: V
Apparent visual magnitude: +10.75
Absolute visual magnitude: +9.34
Visual luminosity: 0.016 x Sol
Color indices: B-V= +1.45, U-B= +1.24, R-I= +0.71
Comfort Zone (visual): 0.13 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.