2.6 Other Lunar Environments
45
Table 2.12
The result of analysis of the atmosphere of Earth on the near-Earth orbit with an altitude range of 100~2500 km
Height/km
Density/(g/cm 3
)
Pressure/Pa
Molecular number density/cm −3
O
2
N
2
O
Ar
He
H
100
5.99
× 10 −10
3.47
× 10 −2
2.25
× 10 12
9.72
× 10 12
7.15
× 10 11
1.16
× 10 11
1.61
× 10 8
0
200
3.52
× 10 −13
1.23
× 10 −4
4.18
× 10 8
4.27
× 10 9
4.95
× 10 9
0
7.68
× 10 6
0
300
2.91
× 10 −14
1.36
× 10 −5
1.11
× 10 7
1.76
× 10 8
7.65
× 10 8
0
4.63
× 10 6
0
500
8.55
× 10 −16
4.82
× 10 −7
1.80
× 10 4
6.34
× 10 5
3.05
× 10 7
0
2.05
× 10 6
1.95
× 10 4
800
1.41
× 10 −17
1.53
× 10 −8
2.54
× 10 0
2.70
× 10 2
3.62
× 10 5
0
6.77
× 10 5
1.47
× 10 4
1000
2.89
× 10 −18
5.45
× 10 −9
1.03
× 10 −2
2.17
× 10 3
2.31
× 10 4
0
3.40
× 10 5
1.24
× 10 4
1500
4.86
× 10 −19
1.15
× 10 −9
3.72
× 10 −8
3.73
× 10 −5
4.38
× 10 1
0
7.09
× 10 4
8.34
× 10 5
2500
4.21
× 10 −20
1.39
× 10 −10
3.36
× 10 −17
4.51
× 10 −13
1.32
× 10 −3
0
5.24
× 10 3
4.33
× 10 3