|
|
Sun |
Mercury |
Venus |
Earth |
Mars |
Jupiter |
Saturn |
Uranus |
Neptune |
Pluto |
|
Diameter (km) |
1 392 000 |
4878 |
12 103 |
12 756 |
6 786 |
142 984 |
120 536 |
51 118 |
49 528 |
2 300 |
|
Mass (Earth=1) |
332 946 |
0.055 |
0.81 |
1 |
0.11 |
318 |
95.18 |
14.5 |
17.14 |
0.0022 |
|
Surface gravity (Earth=1) |
27.9 |
0.38 |
0.86 |
1 |
0.38 |
2.5 |
1.1 |
1.1 |
1.1 |
- |
|
Average surface temperature ( ˚ C) |
5 500 |
-170 to 430 |
464 |
15 |
-40 |
-120 |
-180 |
-210 |
-220 |
-220 |
|
Length of day (in Earth hours/day/years) |
|
58.65 days |
243.01 days* |
23.93 hours |
24.62 hours |
9.92 hours |
10.67 hours |
17.23 hour* |
16.12 hours |
6.38 days |
|
Length of year (in Earth hours/day/years) |
- |
87.97 days |
224.7 days |
365.26 days |
1.88 years |
11.86 years |
29.46 years |
84.01 years |
164.79 years |
248.54 years |
|
Distance from Sun (million km) |
- |
45.9 to 68.7 |
107.4 to 109 |
147.1 to 152.1 |
206.7 to 249.1 |
740.3 to 815.7 |
1 347 to 1 507 |
2 735 to 3 004 |
4 456 to 4 537 |
4 425 to 7375 |
|
Number of rings |
0 |
0 |
0 |
0 |
0 |
1 |
7 |
11 |
4 |
0 |
|
Number of moons |
0 |
0 |
0 |
1 |
2 |
16 |
18 |
15 |
8 |
1 |
|
Volume (Earth=1) |
- |
0.056 |
0.86 |
1 |
0.15 |
1 323 |
744 |
67 |
57 |
Unknown |
|
Speed of movement around the sun |
- |
172 332 kmph 47.89 kmps |
126 072 kmph 35.03 kmps |
107 244 kmph 29.79 kmps |
86 868 kmph 24.13 kmps |
47 016 kmph 13.06 kmps |
34 812 kmph 9.64 kmps |
24 516 kmph 6.81 kmps |
19 548 kmph 5.43 kmps |
17 064 kmph 4.74 kmps |
|
Atmospheric composition |
Hydrogen and helium (hydrogen undergoes nuclear fusion to form helium) |
Principally of helium and hydrogen with little amounts of sodium, oxygen, neon, argon and potassium |
About 92% Carbon dioxide, 3.5% nitrogen |
78% Nitrogen, 21% Oxygen and 1% water vapour, argon, carbon dioxide and other trace gases. |
95% Carbon dioxide, 2.7% Nitrogen, 1.6% Argon, 0.7% Oxygen, carbon monoxide and water vapour |
90% Hydrogen, 10% Helium with traces of ammonia, methane and water vapour |
94% Hydrogen, 6% helium with traces of ammonia, methane and water vapour |
85% Hydrogen, 12% helium and 3% methane |
85% Hydrogen, 13% Helium and 2% methane |
Probably Methane mixed with nitrogen |
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