Psi Serpentis

light-years
Proper names: Psi Serpentis, 23 Serpentis
Catalog numbers:
     Gliese (Gl) 596.1, Henry Draper (HD) 140538, Bonner Durchmusterung (BD) +2°2989, Hipparcos Input Catalog (HIC) 77052, Smithsonian Astrophysical Observatory (SAO) 121152, Aitken Double Star (ADS) 9763, FK5 Extension (FK5 Ext) 3248, Hoffleit Bright Star (HR) 5853, Woolley (Wo) 9527
Arity: binary
Right Ascension and Declination: 15h44m1.808s, +2°30'54.48" (epoch 2000.0)
Distance from Sol: 47.9 light-years (14.7 parsecs)
Standard error in distance: 1.2603%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -26.7, -39.6, 2.10
Galactic (X,Y,Z) coordinates in ly: 35.4, 6.25, 31.6
Proper motion: 0.163 arcsec/yr (200.4° from north)
Radial Velocity: 19.4 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: 18.1, -7.93, 10.7

What do all these fields mean?

Data for A and B's orbit around one other:
Combined absolute visual magnitude: +5.02
Combined visual luminosity: 0.85 x Sol
Observed Separation: 61.6 A.U.s
Year of separation observation: 1957
As seen from A:
     B would appear as magnitude -11.46
As seen from B:
     A would appear as magnitude -17.60


Component A:
NOTE: This star is actually a close-orbiting binary pair. The data below are for both sub-components of the pair combined.
Spectral class: G5
Luminosity Class: V
Apparent visual magnitude: +5.86
Absolute visual magnitude: +5.03
Visual luminosity: 0.85 x Sol
Color indices: B-V= +0.68, U-B= +0.24, R-I= +0.24
Diameter: 1.05 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.92 A.U.s
Angular size of star in sky in CZ: 0.607489 degrees


Component B:
Spectral class: M
Luminosity Class: V
Apparent visual magnitude: +12.00
Absolute visual magnitude: +11.17
Visual luminosity: 0.0030 x Sol
Diameter: 0.48 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 0.055 A.U.s
Angular size of star in sky in CZ: 4.695163 degrees

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