Comparison of Jovian Planets
��
(gm/cm
3
)
Planet
�����
a
�
(AU)
��
P
(years)
���
T
�
(K)
E
out
/E
in
��
M
(M
earth
)
Jupiter
���
5.2
���
12
143
�
1.7
��
318
��
1.34
Saturn
���
9.5
���
29
�
93
�
1.8
���
95
��
0.69
Uranus
�
19.2
���
84
�
53
~1
���
15
��
1.29
Neptune
�
30.1
�
165
�
57
�
2.6
���
17
��
1.66