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The Dune Encyclopedia
This article or section refers to elements that appear exclusively in The Dune Encyclopedia.


The moon as appears in Dune (1984 movie)

Arvon also called Muad'dib is the smaller of the two satellites of Arrakis.

It orbits Arrakis in less than one-fourth the time required for Krelln. Having a diameter larger than Krelln, total eclipses of Krelln occur every 547.2 days.

The physical characteristics of Arvon differ from those of Krelln. Large amounts of subterranean water ice and frozen carbon dioxide result in its small density.

Cratering is evident, but is less pronounced due to the more fluid crystal structure. There is no measurable magnetic field. No evidence of tectonic activity has been detected by Arrakian scientists. It is geologically inert.


201 km
5.7 days
nearly circular
Perigee distance
103,000 km
13.42′ (arc minutes)
2.02 g/cm3
(small density due to most of it being frozen water and carbon dioxide)


  • ARRAKIS, Astronomical aspects of

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