saturn.txt

一个关于星球运动的Java3d例子

name=土星
orbitdata=saturn.orbit.txt
orbitperiod=10746.940
texture=images/saturn.jpg
radius=58232
radiusscale=2000
orbitcolor=1,1,0
#EOF
 PHYSICAL DATA:
  Mass (10^26 kg)       = 5.68461037873   Density (g/cm^3)       =  0.687+-.001
  Equat. radius (1 bar) = 60268+-4 km     Polar radius (km)      = 54364+-10
  Volumetric mean radius= 58232+-6 km     Flattening             =  0.09796

  Rotation period       = 10h 39m 22.4s   Rot. rate(10^-4 rad/s) =  1.63785
  m = w^2a^3/GM         =  0.15481        Hydrostatic flat., fh  =  0.09829
  Inferred rot. period  = 10.61+-0.02 hr  ks = 3*J2/m            =  0.317
  Mom. of inert. I/MRo^2=  0.210          I/MRo^2 (upper bound)  =  0.231
  Rocky core mass (Mc/M)=  0.1027         Y factor (He/H ratio)  =

  GM (km^3/s^2)         = 37931284.5      GM 1-sigma (km^3/s^2)  = +- 98
  Equ. grav, ge (m/s^2) =  8.96+-0.01     Pol. grav, gp (m/s^2)  = 12.14+-0.01

  Geometric albedo      =  0.47           Visual magnitude V(1,0)= -8.88
  Vis. mag. (opposition)= +0.67           Obliquity to orbit     = 26.73 deg
  Sidereal orbit period = 29.423519 yr    Sidereal orbit period  = 10746.940 d
  Mean daily motion     = 0.0334979 deg/d Mean orbit velocity    =  9.6624 km/s

  Planetary Solar Const =  15.04 W/m^2    Dipole tilt/offset     = 0.0deg/0.0Rp
  Escape velocity (km/s)=  35.5           Mag.dip.mom(gauss-Rp^3)= 0.21
  Aroche(ice)/Rp        =  2.71           Hill's sphere rad. Rp  = 1100