Source | r (![]() |
Main ion | T (K) |
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speciesb | (
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|||
Saturn's | 1.2 |
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400- | 0 |
ionosphere | (north | 800d | ||
pole) | ||||
C-Ring | 1.705 |
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93e | 13.64 |
(above) | water productsc | |||
Enceladus | 4.074 | same as C-Ring | 85f | 38.98 |
(south | ||||
pole) | ||||
Dione | 6.576 | same as C-Ring | 87.15g | 32.08 |
E-Ring | 7.665 |
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89.09h | 75.03 |
(above) | water products | |||
Rhea | 9.552 | same as E-Ring | 76.15i | 31.26 |
a The distances are calculated through:
![]() b The masses are given in amu ( ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() c Water products include ![]() ![]() d Atreya et al. (1986). e The brightness temperature has been determined by Murphy (1973). Recently Cassini has observed a temperature asymmetry between the unlit and lit sides of the rings (Spilker et al. 2006). f Spencer et al. (2006); Loeffler et al. (2006); Pontius & Hill (2006). g Soderblom & Johnson (1982). h It corresponds to the effective temperature considering that the E-Ring is mainly composed by icy-particles with an albedo of 0.05. i It is the sunlit temperature on Rhea's surface (Murdin 2001). |