Cape Photographic Durchmusterung -77°1522
Catalog numbers:
Henry Draper (HD) 207496, Cape Photographic Durchmusterung (CPD) -77°1522, Hipparcos Input Catalog (HIC) 108162, Smithsonian Astrophysical Observatory (SAO) 257976, UGPMF 541, Cordoba Durchmusterung (CD) -77°1092, Luyten Two-Tenth (LTT) 8736
Arity: binary
Right Ascension and Declination: 21h54m51.272s, -77°20'17.06" (epoch 2000.0)
Distance from Sol: 86.0 light-years (26.4 parsecs)
Standard error in distance: 3.0187%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: 16.1, -9.79, -83.9
Galactic (X,Y,Z) coordinates in ly: 48.1, -50.1, -50.8
Proper motion: 0.288 arcsec/yr (129.0° from north)
Radial Velocity: -10.6 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -34.1, -15.6, 1.08
What do all these fields mean?
Data for A and B's orbit around one other:
Combined absolute visual magnitude: +6.01
Combined visual luminosity: 0.34 x Sol
Observed Separation: 207 A.U.s
Year of separation observation: 1980.8
As seen from A:
B would appear as magnitude -11.60
As seen from B:
A would appear as magnitude -13.86
Component A:
Spectral class: K3-4
Luminosity Class: V
Apparent visual magnitude: +8.24
Absolute visual magnitude: +6.13
Visual luminosity: 0.31 x Sol
Color indices: B-V= +1.00, U-B= +0.89
Comfort Zone (visual): 0.55 A.U.s
Component B:
Apparent visual magnitude: +10.50
Absolute visual magnitude: +8.39
Visual luminosity: 0.038 x Sol
Comfort Zone (visual): 0.20 A.U.s
Data for this star system were most recently updated on 4-April-2001.