Ross 776

light-years

Catalog numbers:
     Ross 776, Luyten Two-Tenth (LTT) 16240
Arity: binary
Right Ascension and Declination: 21h13m56s, +29°39'18" (epoch 1950.0)
Distance from Sol: 50 light-years (15 parsecs)
Standard error in distance: 12.1622%
Source for distance: Gliese
Celestial (X,Y,Z) coordinates in ly: 33, -29, 25
Galactic (X,Y,Z) coordinates in ly: 11, 48, -11
Proper motion: 0.217 arcsec/yr (77.0° from north)
Source for proper motion: Gliese

What do all these fields mean?

Data for A and B's orbit around one other:
Combined absolute visual magnitude: +11.32
Combined visual luminosity: 0.003 x Sol
Observed Separation: 400 A.U.s
As seen from A:
     B would appear as magnitude -6.01
As seen from B:
     A would appear as magnitude -6.82


Component A:
Spectral class: M
Luminosity Class: V-VI
Apparent visual magnitude: +12.68
Absolute visual magnitude: +11.74
Visual luminosity: 0.002 x Sol
Color indices: R-I= +1.22
Comfort Zone (visual): 0.04 A.U.s


Component B:
Catalog numbers:
     Luyten Palomar (LP) 341-14
Right Ascension and Declination: 21h13m54s, +29°39'12" (epoch 1950.0)
Celestial (X,Y,Z) coordinates in ly: 33, -29, 25
Galactic (X,Y,Z) coordinates in ly: 11, 48, -11
Spectral class: M
Luminosity Class: V-VI
Apparent visual magnitude: +13.49
Absolute visual magnitude: +12.55
Visual luminosity: 0.0008 x Sol
Color indices: R-I= +1.23
Comfort Zone (visual): 0.03 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.