Bonner Durchmusterung -0°1866

light-years

Catalog numbers:
     Gliese (Gl) 293.1, Henry Draper (HD) 65277, Bonner Durchmusterung (BD) -0°1866, Giclas (G) 113-7, Hipparcos Input Catalog (HIC) 38931, Smithsonian Astrophysical Observatory (SAO) 135302, Aitken Double Star (ADS) 6487, UGPMF 169
Arity: binary
Right Ascension and Declination: 7h57m57.731s, +0°48'52.11" (epoch 2000.0)
Distance from Sol: 57.0 light-years (17.5 parsecs)
Standard error in distance: 2.4698%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -28.0, 49.6, 0.81
Galactic (X,Y,Z) coordinates in ly: -41.8, -35.5, 15.4
Proper motion: 0.181 arcsec/yr (270.0° from north)
Radial Velocity: -4 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -4.38, 5.60, -13.8

What do all these fields mean?

Data for A and B's orbit around one other:
Combined absolute visual magnitude: +6.84
Combined visual luminosity: 0.16 x Sol
Observed Separation: 34.9 A.U.s
Year of separation observation: 1908
As seen from A:
     B would appear as magnitude -11.77
As seen from B:
     A would appear as magnitude -17.01

Data for A and B's orbit, take 2:
Observed Separation: 71.6 A.U.s
Year of separation observation: 1956
As seen from A:
     B would appear as magnitude -10.21
As seen from B:
     A would appear as magnitude -15.45


Component A:
Spectral class: K5
Luminosity Class: V
Apparent visual magnitude: +8.06
Absolute visual magnitude: +6.85
Visual luminosity: 0.16 x Sol
Comfort Zone (visual): 0.40 A.U.s


Component B:
Apparent visual magnitude: +13.30
Absolute visual magnitude: +12.09
Visual luminosity: 0.0013 x Sol
Comfort Zone (visual): 0.036 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.