Ross 370

light-years

Catalog numbers:
     Gliese (Gl) 130.1, Giclas (G) 174-41, Vyssotsky McCormick (McC) 416, Ross 370
Arity: binary
Right Ascension and Declination: 3h12m17s, +57°59'17" (epoch 1950.0)
Distance from Sol: 46.2 light-years (14.2 parsecs)
Standard error in distance: 5.2349%
Source for distance: Gliese
Celestial (X,Y,Z) coordinates in ly: 16.4, 18.2, 39.2
Galactic (X,Y,Z) coordinates in ly: -35.9, 29.0, 0.40
Proper motion: 0.591 arcsec/yr (126.7° from north)
Radial Velocity: 22 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -42.0, -16.9, -3.54

What do all these fields mean?

Data for A and B's orbit around one other:
Combined absolute visual magnitude: +9.54
Combined visual luminosity: 0.013 x Sol
Observed Separation: 70.8 A.U.s
As seen from A:
     B would appear as magnitude -11.88
As seen from B:
     A would appear as magnitude -12.16


Component A:
Catalog numbers:
     Luyten Half-Second (LHS) 1522, Luyten FT (LFT) 265, Catalogue Astrographique (AC) +57°22428
Spectral class: M1.5
Luminosity Class: V
Apparent visual magnitude: +10.92
Absolute visual magnitude: +10.16
Visual luminosity: 0.0075 x Sol
Comfort Zone (visual): 0.087 A.U.s


Component B:
Catalog numbers:
     Luyten Half-Second (LHS) 1523, Catalogue Astrographique (AC) +57°22429, Luyten FT (LFT) 266
Proper motion: 0.591 arcsec/yr (126.7° from north)
Radial Velocity: 22.1 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -42.0, -16.8, -3.54
Spectral class: M2
Luminosity Class: V
Apparent visual magnitude: +11.20
Absolute visual magnitude: +10.44
Visual luminosity: 0.0058 x Sol
Comfort Zone (visual): 0.076 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.