I Carinae

light-years
Proper names: I Carinae
Catalog numbers:
     Gliese (Gl) 391, Henry Draper (HD) 90589, Cape Photographic Durchmusterung (CPD) -73°733, Hipparcos Input Catalog (HIC) 50954, Smithsonian Astrophysical Observatory (SAO) 256710, Fifth Fundamental Catalogue (FK5) 391, Hoffleit Bright Star (HR) 4102, New Suspected Variable (NSV) 4856
Arity: possible spectroscopic binary
Right Ascension and Declination: 10h24m23.66s, -74°1'53.81" (epoch 2000.0)
Distance from Sol: 52.89 light-years (16.22 parsecs)
Standard error in distance: 0.7883%
Source for distance: Hipparcos
Celestial (X,Y,Z) coordinates in ly: -13.30, 5.895, -50.85
Galactic (X,Y,Z) coordinates in ly: 20.33, -47.07, -12.97
Proper motion: 0.033 arcsec/yr (207.0° from north)
Radial Velocity: -4.7 km/sec
Source for proper motion and radial velocity: Gliese
Galactic (U,V,W) velocity components in km/s: -1.822, 4.851, -1.295

What do all these fields mean?


Spectral class: F2
Luminosity Class: IV
Apparent visual magnitude: +3.99
Absolute visual magnitude: +2.94
Visual luminosity: 5.817 x Sol
Color indices: B-V= +0.35, U-B= -0.01
Diameter: 1.586 x Sol
Source for diameter: Apparent Diameters and Absolute Radii of Stars (Fracassini+ 1988)
Comfort Zone (visual): 2.412 A.U.s
Angular size of star in sky in CZ: 0.350547 degrees

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