10. Astronomical Data
Body
Mean radius,
m
Mass, kg
Mean density,
103 kg/m3
Period of rotation
about axis, days
Sun
6.95.102
1.97.1020
1.41
25.4
Earth
6.37.106
5.96.1024
5.52
1.00
Moon
1.74.106
7.30.1022
3.30
27.3
Planets of solar system
die
Mean Sun stanc
, 106 km
from the
Siderial period, years
Mercury
57.87
0.241
Venus
108.14
0.615
Earth
149.50
1.000
Mars
227.79
1.881
Jupiter
777.8
11.862
Saturn
1426.1
29.458
Uranus
2867.7
84.013
Neptune
4494
164.79
11. Density of Substances
Solids
p, g/cm2
Liquids
I P. g/cm 3
Diamond
3.5
Benzene
0.88
Aluminium
2.7
Water
1.00
Tungsten
19.1
Glycerin
1.26
Graphite
1.6
Castor oil
0.90
Iron (steel)
7.8
Kerosene
0.80
Gold
19.3
Mercury
13.6
Cadmium
8.65
Alcohol
0.79
Cobalt
8.9
Heavy water
1.1
Ice
0.916 Ether
0.72
Copper
8.9
Gases (under standard condi- p, kg/ra3
Molibdenum
10.2
tions)
Sodium
0.97
Nitrogen
1.25
Nickel
8.9
Ammonia
0.77
Tin
7.4
Hydrogen
0.09
Platinum
21.5
Air
1.293
Cork
0.20
Oxygen
1.43
Lead
11.3
Methane
0.72
Silver
10.5
Carbon dioxide
1.98
Titanium
4.5
Chlorine
3.21
Uranium
19.0
Porcelain
2.3
Zinc
7.0
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