Bonner Durchmusterung -9°4692

light-years

Catalog numbers:
     Henry Draper (HD) 168443, Bonner Durchmusterung (BD) -9°4692, Giclas (G) 155-11, Hipparcos Input Catalog (HIC) 89844, Smithsonian Astrophysical Observatory (SAO) 142228, Luyten Two-Tenth (LTT) 7289
Arity: singular
Right Ascension and Declination: 18h20m3.95s, -9°35'45.88" (epoch 2000.0)
Distance from Sol: 68 light-years (21 parsecs)
Standard error in distance: 14.2857%
Source for distance: Gliese
Celestial (X,Y,Z) coordinates in ly: 5.9, -67, -11
Galactic (X,Y,Z) coordinates in ly: 63, 25, 2.3
Proper motion: 0.267 arcsec/yr (201.5° from north)
Source for proper motion: Gliese

What do all these fields mean?


Spectral class: G8
Luminosity Class: V
Apparent visual magnitude: +6.91
Absolute visual magnitude: +5.32
Visual luminosity: 0.6 x Sol
Color indices: B-V= +0.70, U-B= +0.31
Comfort Zone (visual): 0.8 A.U.s
Detected companions: 1
Companion b:
     Mass: 5.04 x Jupiter, minimum
     Standard error in mass: 7.9%
     Period: 57.9 days
     Standard Error in period: 1.727%
     Semimajor Axis: 0.277 A.U.s
     Eccentricity: 0.55
     Periastron distance: 0.12465 A.U.s
     Apastron distance: 0.42935 A.U.s
     Source for orbit data: Marcy, Butler, Vogt

light-years
but not more than light-years away
Data for this star system were most recently updated on 4-April-2001.