Iota Piscis

light-years
Proper names: Iota Piscis, 17 Piscis
Catalog numbers:
     Gliese (Gl) 904, Henry Draper (HD) 222368, Bonner Durchmusterung (BD) +4°5035, Luyten Half-Second (LHS) 3995, Hipparcos Input Catalog (HIC) 116771, Smithsonian Astrophysical Observatory (SAO) 128310, Fifth Fundamental Catalogue (FK5) 892, Hoffleit Bright Star (HR) 8969, New Suspected Variable (NSV) 14657
Age: 5200 million years
Source for age: Don C. Barry, "Chromospheric Age Dependence of…", APJ 334
Heavy element abundance: 60% of Sol
Standard error in heavy element abundance: 22%
Source for heavy element abundance: Strobel [Fe/H] Determinations
Arity: possible spectroscopic binary
Points of interest:
     B. Edvardsson et al. derived an age of about 4.4 thousand-million years for this star.

Right Ascension and Declination: 23h39m57.041s, +5°37'34.56" (epoch 2000.0)
Distance from Sol: 45.0 light-years (13.8 parsecs)
Standard error in distance: 1.1991%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: 44.6, -3.91, 4.41
Galactic (X,Y,Z) coordinates in ly: -1.72, 27.0, -35.9
Proper motion: 0.573 arcsec/yr (139.0° from north)
Radial Velocity: 5.5 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -8.09, -26.1, -26.2

What do all these fields mean?


Spectral class: F7
Luminosity Class: V
Apparent visual magnitude: +4.13
Absolute visual magnitude: +3.43
Visual luminosity: 3.71 x Sol
Color indices: B-V= +0.51, U-B= +0.00, R-I= +0.19
Diameter: 1.60 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 1.92 A.U.s
Angular size of star in sky in CZ: 0.443336 degrees

light-years
but not more than light-years away
Data for this star system were most recently updated on 12-May-2001.