Siano Milky Way / Pylos Nebula / Dirada
Planet View
Type	Rock
Orbital Distance	12.9 AU
Orbital Period	26 Earth Years
Keplerian Ratio	3.176
Radius	4,925 km
Day Length	26 Earth Hours
Atm. Pressure	N/A
Surface Temp	79 °C
Surface Gravity	0.47 g
Mass	0.278 Earth Masses
Satellites	N/A

Location: Milky Way / Pylos Nebula / Dirada System /  First planet

DescriptionEdit

Mass Effect 2Edit

Siano, named for an ancient asari philosopher known for being a contrarian, orbits Dirada at a retrograde. It is believed to be an object that fell into the system millions of years of ago from parts unknown. The outermost of Dirada's two inner asteroid belts is thought to have been a small planetoid that was broken up by Siano's passage into the system. Siano is formed of low-density rock and is tidally locked to Dirada; the same hemisphere always faces the star. There is evidence that a complex of artificial structures once existed in the north of the sunward-facing hemisphere, but they have been badly degraded by millennia of heat and radiation. Several bunkers of radioactive waste, apparently byproducts of primitive fission plants, have been discovered on the far side.

Mass Effect 3Edit

Siano, named for an ancient asari philosopher known for being a contrarian, orbits Dirada at a retrograde. It is believed to be an object that fell into the system millions of years of ago from parts unknown. The outermost of Dirada's two inner asteroid belts is thought to have been a small planetoid that was broken up by Siano's passage into the system. Siano is formed of low-density rock and is tidally locked to Dirada; the same hemisphere always faces the star. There is evidence that a complex of artificial structures once existed in the north of the sunward-facing hemisphere, but they have been badly degraded by millennia of heat and radiation. Several bunkers of radioactive waste, apparently byproducts of primitive fission plants, have been discovered on the far side. The Reapers appear to have ignored Siano, concentrating on systems with a higher population.

Mineral DepositsEdit

Initial Scanner Result: Rich