Hussey 575

light-years

Catalog numbers:
     Woolley (Wo) 9490, Aitken Double Star (ADS) 9352, Vyssotsky McCormick (McC) 155, Hussey (HU) 575
Arity: trinary
Right Ascension and Declination: 14h42m33.614s, +19°28'46.76" (epoch 2000.0)
Distance from Sol: 73.2 light-years (22.5 parsecs)
Standard error in distance: 5.4553%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -52.4, -45.0, 24.4
Galactic (X,Y,Z) coordinates in ly: 31.0, 12.6, 65.2
Proper motion: 0.324 arcsec/yr (235.1° from north)
Radial Velocity: -28.7 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -16.6, -38.1, -17.0

What do all these fields mean?

Data for A and B's orbit around one other:
Combined absolute visual magnitude: +7.35
Combined visual luminosity: 0.100 x Sol
Period: 51.337 years
Semimajor Axis: 14.0 A.U.s
Eccentricity: 0.09
Periastron distance: 12.7 A.U.s
Apastron distance: 15.3 A.U.s
Year in which periastron occurs: 1929.32
Source for orbit data: G.A. Starikova
As seen from A:
     At periastron, B would appear as magnitude -17.80
     At apastron, B would appear as magnitude -17.41
As seen from B:
     At periastron, A would appear as magnitude -18.06
     At apastron, A would appear as magnitude -17.67

Data for A and B's orbit, take 2:
Period: 52 years
Semimajor Axis: 14.1 A.U.s
Eccentricity: 0.1
Periastron distance: 12.7 A.U.s
Apastron distance: 15.6 A.U.s
Year in which periastron occurs: 1931.5
Source for orbit data: P. Muller
As seen from A:
     At periastron, B would appear as magnitude -17.80
     At apastron, B would appear as magnitude -17.37
As seen from B:
     At periastron, A would appear as magnitude -18.06
     At apastron, A would appear as magnitude -17.63

Data for (A-B) and C's orbit around one other:
Combined absolute visual magnitude: +6.98
Combined visual luminosity: 0.14 x Sol
Observed Separation: 3031 A.U.s
As seen from (A-B):
     C would appear as magnitude -5.84
As seen from C:
     (A-B) would appear as magnitude -6.81


Component A:
Catalog numbers:
     Bonner Durchmusterung (BD) +20°3010, Giclas (G) 135-83, Hipparcos Input Catalog (HIC) 71914, Luyten Two-Tenth (LTT) 14351
Spectral class: K5
Luminosity Class: V-VI
Apparent visual magnitude: +9.74
Absolute visual magnitude: +7.98
Visual luminosity: 0.056 x Sol
Diameter: 0.69 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.24 A.U.s
Angular size of star in sky in CZ: 1.557571 degrees


Component B:
Catalog numbers:
     Giclas (G) 135-83, Hipparcos Input Catalog (HIC) 71914, Luyten Two-Tenth (LTT) 14351
Apparent visual magnitude: +10.00
Absolute visual magnitude: +8.24
Visual luminosity: 0.044 x Sol
Diameter: 0.68 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.21 A.U.s
Angular size of star in sky in CZ: 1.730256 degrees


Component C:
Catalog numbers:
     Bonner Durchmusterung (BD) +20°3009, Giclas (G) 135-82, Hipparcos Input Catalog (HIC) 71904, Luyten Two-Tenth (LTT) 14350
Right Ascension and Declination: 14h42m26.01s, +19°30'13" (epoch 2000.0)
Celestial (X,Y,Z) coordinates in ly: -52.4, -44.9, 24.4
Galactic (X,Y,Z) coordinates in ly: 30.9, 12.6, 65.2
Proper motion: 0.298 arcsec/yr (234.0° from north)
Radial Velocity: -28 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -15.3, -35.4, -17.3
Spectral class: K5
Luminosity Class: V-VI
Apparent visual magnitude: +10.08
Absolute visual magnitude: +8.32
Visual luminosity: 0.041 x Sol
Color indices: B-V= +1.34, U-B= +1.28, R-I= +0.58
Diameter: 0.68 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.20 A.U.s
Angular size of star in sky in CZ: 1.795193 degrees

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