HU Delphini

Proper names: HU Delphini
Catalog numbers:
     Gliese (Gl) 791.2, Luyten Half-Second (LHS) 3556, Luyten Two-Tenth (LTT) 15983
Arity: singular
Right Ascension and Declination: 20h27m21s, +9°31'11" (epoch 1950.0)
Distance from Sol: 28.6 light-years (8.76 parsecs)
Standard error in distance: 1.6365%
Source for distance: Gliese
Celestial (X,Y,Z) coordinates in ly: 16.9, -22.5, 4.72
Galactic (X,Y,Z) coordinates in ly: 16.3, 22.0, -8.23
Proper motion: 0.685 arcsec/yr (79.8° from north)
Radial Velocity: -15 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -27.6, -4.92, -15.7

What do all these fields mean?

Spectral class: M6e
Luminosity Class: V
Apparent visual magnitude: +13.05
Absolute visual magnitude: +13.34
Visual luminosity: 0.00040 x Sol
Color indices: B-V= +1.65, U-B= +1.28, R-I= +1.32
Comfort Zone (visual): 0.020 A.U.s

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