Innes 7

light-years

Catalog numbers:
     Gliese (Gl) 269, Henry Draper (HD) 57095, Cordoba Durchmusterung (CD) -46°3046, Luyten Half-Second (LHS) 1911, Hipparcos Input Catalog (HIC) 35296, Smithsonian Astrophysical Observatory (SAO) 218611, UGPMF 155, Innes (I) 7
Arity: binary
Right Ascension and Declination: 7h17m29.579s, -46°58'46.06" (epoch 2000.0)
Distance from Sol: 48.2 light-years (14.8 parsecs)
Standard error in distance: 1.2546%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -10.9, 31.0, -35.2
Galactic (X,Y,Z) coordinates in ly: -9.30, -45.6, -12.6
Proper motion: 0.578 arcsec/yr (358.1° from north)
Radial Velocity: 59 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -48.9, -52.2, -0.64

What do all these fields mean?

Data for A and B's orbit around one other:
Combined absolute visual magnitude: +5.86
Combined visual luminosity: 0.39 x Sol
Period: 84 years
Semimajor Axis: 9.00 A.U.s
Eccentricity: 0.9
Periastron distance: 0.90 A.U.s
Apastron distance: 17.1 A.U.s
Year in which periastron occurs: 1957.58
Source for orbit data: W.H. van den Bos
As seen from A:
     At periastron, B would appear as magnitude -24.75
     At apastron, B would appear as magnitude -18.36
As seen from B:
     At periastron, A would appear as magnitude -25.50
     At apastron, A would appear as magnitude -19.11

Data for and 's orbit around one other:
Period: 81.5 years
Semimajor Axis: 8.26 A.U.s
Eccentricity: 0.892
Periastron distance: 0.89 A.U.s
Apastron distance: 15.6 A.U.s
Year in which periastron occurs: 1957.4
Source for orbit data: A. Valbousquet


Component A:
Spectral class: K1
Luminosity Class: V
Apparent visual magnitude: +7.15
Absolute visual magnitude: +6.30
Visual luminosity: 0.26 x Sol
Diameter: 0.82 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.51 A.U.s
Angular size of star in sky in CZ: 0.853435 degrees


Component B:
Spectral class: K4
Luminosity Class: V
Apparent visual magnitude: +7.90
Absolute visual magnitude: +7.05
Visual luminosity: 0.13 x Sol
Diameter: 0.73 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.36 A.U.s
Angular size of star in sky in CZ: 1.073215 degrees

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