dan

o,, ,o
.. L
.. 0


aquila

self portrait

surprised mode

.. upon spilling th' coffee again

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in sagittarius

binary planetary system

primary: mass 4.84x10e21 ton - diameter 12044 km
secondary: mass 5.4x10e20 ton - diameter 6009 km

distance betw primary and secondary: 54000 km
period of mutual rotation: 12 days ( a one day period)
period of orbit about parent star: 540 days
distance of primary-secondary from star: 192 million km
placement of primary-secondary: 5
mass of parent star: 0.91 sun

description: synchronous lock orbit - same side of each planet always faces same side of other
both planets are completely spherical - no sign of bulging due to gravitational attraction
compass always points in direction of othet planet
axial tilt: 19 degrees
both planets have atmospheres of nitrogen and oxygen and neon and argon and xenon and helium and water vapor ..
atmospheric pressure on primary: 4x that of the earth
temperature range of primary: - 100 in polar region to + 20 in equatorial region
atmospheric pressure on secondary: 0.2x that of the earth
temperature range on secondary ..

primary is a frozen desert world with water ocean - two major continents in hemisphere facing secondary - islands abound - volcanic activity present - granitic rock and metamorphic rock predominate - metamorph similar to marble characterized by blue and red crystal - extensive radioactivity in exposed rock - mineral salts radiactive

discussion: binary planets rotate about a common axis every 12 days (in earth day time) making a one day period in binary system - relatively long day period results in substantial exposure of planet surface to parent star light - a day on primary (and secondary) is 12 earth days long - four distinct layers of atmospheric clouds surround primary - secondary may be viewed from surface of primary - secondary appears as blue grey white red disc in primary sky

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