Steph 1681

light-years

Arity: binary
Right Ascension and Declination: 23h0m33.412s, -23°57'10.3" (epoch 2000.0)
Distance from Sol: 66.4 light-years (20.3 parsecs)
Standard error in distance: 5.8068%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: 58.6, -15.6, -26.9
Galactic (X,Y,Z) coordinates in ly: 22.7, 15.8, -60.3
Proper motion: 0.389 arcsec/yr (148.0° 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: +9.30
Combined visual luminosity: 0.017 x Sol
Observed Separation: 1526 A.U.s
As seen from A:
     B would appear as magnitude -5.59
As seen from B:
     A would appear as magnitude -5.63


Component A:
Catalog numbers:
     Cordoba Durchmusterung (CD) -24°17443, Hipparcos Input Catalog (HIC) 113602, Steph 1681, Luyten Two-Tenth (LTT) 9310, Luyten (L) 718-71
Spectral class: M1
Luminosity Class: V-VI
Apparent visual magnitude: +11.57
Absolute visual magnitude: +10.03
Visual luminosity: 0.0085 x Sol
Color indices: B-V= +1.53, R-I= +0.87
Comfort Zone (visual): 0.092 A.U.s


Component B:
Catalog numbers:
     Cordoba Durchmusterung (CD) -24°17445, Hipparcos Input Catalog (HIC) 113605, Steph 1682, Luyten Two-Tenth (LTT) 9315, Luyten (L) 718-70
Right Ascension and Declination: 23h0m36.598s, -23°58'10.72" (epoch 2000.0)
Celestial (X,Y,Z) coordinates in ly: 58.6, -15.5, -27.0
Galactic (X,Y,Z) coordinates in ly: 22.7, 15.8, -60.3
Proper motion: 0.389 arcsec/yr (148.0° from north)
Source for proper motion: Gliese
Spectral class: M2
Luminosity Class: V-VI
Apparent visual magnitude: +11.61
Absolute visual magnitude: +10.07
Visual luminosity: 0.0082 x Sol
Color indices: B-V= +1.55, R-I= +0.88
Comfort Zone (visual): 0.090 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.