Guide Star Catalog 36-821

light-years

Catalog numbers:
     Catalogue Astrographique (AC) +61°27026, Hipparcos Input Catalog (HIC) 86346, Vyssotsky McCormick (McC) 796, Guide Star Catalog (GSC) 36-821
Arity: binary
Right Ascension and Declination: 17h38m39.704s, +61°14'16.27" (epoch 2000.0)
Distance from Sol: 80 light-years (24 parsecs)
Standard error in distance: 10.8696%
Source for distance: Gliese
Celestial (X,Y,Z) coordinates in ly: -3.6, -38, 70
Galactic (X,Y,Z) coordinates in ly: -0.2, 67, 42
Proper motion: 0.069 arcsec/yr (319.1° 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: +8.33
Combined visual luminosity: 0.04 x Sol
Observed Separation: 466 A.U.s
Year of separation observation: 1983.29
Source for orbit data: Guide Star Catalog
As seen from A:
     B would appear as magnitude -5.47
As seen from B:
     A would appear as magnitude -9.89


Component A:
Spectral class: K8
Luminosity Class: V
Apparent visual magnitude: +10.28
Absolute visual magnitude: +8.34
Visual luminosity: 0.04 x Sol
Color indices: B-V= +1.23, R-I= +0.63
Comfort Zone (visual): 0.2 A.U.s


Component B:
Right Ascension and Declination: 17h38m8s, +61°15'36" (epoch 1950.0)
Celestial (X,Y,Z) coordinates in ly: -3.6, -38, 70
Galactic (X,Y,Z) coordinates in ly: -0.3, 67, 42
Spectral class: M
Luminosity Class: V
Apparent visual magnitude: +14.70
Absolute visual magnitude: +12.76
Visual luminosity: 0.0007 x Sol
Color indices: R-I= +1.29
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.