Struve 2052

light-years

Catalog numbers:
     Gliese (Gl) 627, Henry Draper (HD) 148653, Bonner Durchmusterung (BD) +18°3182, Giclas (G) 138-34, Hipparcos Input Catalog (HIC) 80725, Smithsonian Astrophysical Observatory (SAO) 102200, Aitken Double Star (ADS) 10075, Struve (STF) 2052
Arity: binary
Right Ascension and Declination: 16h28m52.678s, +18°24'50.22" (epoch 2000.0)
Distance from Sol: 63.7 light-years (19.5 parsecs)
Standard error in distance: 2.8279%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -23.4, -55.7, 20.1
Galactic (X,Y,Z) coordinates in ly: 40.5, 28.6, 40.1
Proper motion: 0.514 arcsec/yr (318.0° from north)
Radial Velocity: -36.2 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -57.3, -13.8, 10.1

What do all these fields mean?

Data for A and B's orbit around one other:
Combined absolute visual magnitude: +5.56
Combined visual luminosity: 0.52 x Sol
Period: 236.07 years
Semimajor Axis: 43.6 A.U.s
Eccentricity: 0.767
Periastron distance: 10.2 A.U.s
Apastron distance: 77.1 A.U.s
Year in which periastron occurs: 1921.07
Source for orbit data: L. Siegrist
As seen from A:
     At periastron, B would appear as magnitude -20.14
     At apastron, B would appear as magnitude -15.74
As seen from B:
     At periastron, A would appear as magnitude -20.31
     At apastron, A would appear as magnitude -15.91


Component A:
Catalog numbers:
     Luyten Half-Second (LHS) 3203
Spectral class: K3
Luminosity Class: V
Apparent visual magnitude: +7.68
Absolute visual magnitude: +6.23
Visual luminosity: 0.28 x Sol
Diameter: 0.8 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.53 A.U.s
Angular size of star in sky in CZ: 0.803880 degrees


Component B:
Catalog numbers:
     Luyten Half-Second (LHS) 3204
Spectral class: K3
Luminosity Class: V
Apparent visual magnitude: +7.85
Absolute visual magnitude: +6.40
Visual luminosity: 0.24 x Sol
Diameter: 0.79 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.49 A.U.s
Angular size of star in sky in CZ: 0.858479 degrees

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