Project Cyclops, A Design... - Department of Earth and Planetary ...

SUN
Radius(Ro) 6.96X10 s m
Area
= 6.09×101am2
Luminosity (Lo) = 3.9X1026 W
Radiation per unit area = 6.4X 107 W/m 2
Effective surface temperature = 5800 ° K
Mass(Mo)=3.32X10 sM e = 1.99X103° kg
*Uncertain because rotation rate of interior of sun may be
Angular velocity (16 ° latitude)
Moment of inertia
Angular momentum (Ho)
Rotational energy
Inclination of axis
greater than surface.
= 2.86X10 -6 rad/s
= 6×1046 kgm 2
1.7X 1041 kg m 2/s*
= 2.5×103s J.
= 7¼°
EARTH
Equatorial radius (a) = 6.378X 106 m
Polar radius (c) = 6.357X 106 m
Mean radius (a2c) 1/3 = 6.371X 106 m
Surface area = 5.1X1014 m2
Volume = 1.083X 102 t m 3
Mass (Me) = 5.977X 1024 kg
Angular velocity = 7.29×10 -s rad/s
Angular momentum = 5.86× 1033 kg m 2/s
Rotational energy = 2.138X 1029 j
Mean orbital velocity = 2.978X 104 m/s
Solar constant (above
atmosphere) = 1.388X 103 W]m 2
Thermal fluxes:
Solar _ 1017 W
Geothermal
_. 2.5X l0 t 3 W
Tidal friction _ 3.4X 1012 W
Coal burning _ 2X 1012 W
Oil burning _ 3X 10 t 2 W
Natural gas burning _ 1.4X 1012 W
Nuclear power (planned) _ 0.3X 1012 W
Total artificial _ 6.7X 1012 W
Temperature increase due to
"thermal pollution" < 0.005°C
SOLAR
SYSTEM
Total fnass of planets = 447.9 M e
Total mass of satellites = 0.12 M e
Total mass of asteroids = 3× 10--_ Ms
Total mass of meteoric
matter = 5× 10-I o Ms
Total
mass of planetary
system = 448 M e
Total angular momentum of
planetary system = 185 H o = 3.15X1043 kg m2/s
Total planetary rotational
energy = 0.7× 1035 J
Total orbital kinetic energy = 2X 10a s j
Mo/_,M = 0.9986
no/ZH _ 0.0054
PLANETS
Radius Mass Period of Inclination
Planet (R e = 1) (Me = 1) Density Rotation of Axis
Mercury 0.38 0.054
Venus 0.96 0.815
Earth 1.0 1.0
Mars 0.53 0.108
Jupiter 11.19 317.8
Saturn 9.47 95.2
Uranus 3.73 14.5
Neptune 3.49 17.2
Pluto 0.47 0.8 (?)
5.4 58.6d
5.1 242.9d 157 °
5.52 23h56m4 s 23o27 '
3.97 24h37m23 s 23 °59'
1.334 9h50 m 3005 '
0.684 10hl 4m 26044 '
1.60 10h49 m 97055 '
2.25 15h 28048 '
6h4
Moon 0.273
*Inclination of orbit to ecliptic.
0.0123
3.34 27.322 d 5°8'43''*
174