This paper is motivated by the recent possibility to find an inexpensive
launching vehicle for the LARES satellite, however at an altitude much lower
than originally planned for the LAGEOS III/LARES satellite.
We present here a preliminary error analysis corresponding to a lower,
quasi-polar, orbit, in particular we analyze the effect on the LARES node of
the Earth's static gravitational field, and in particular of the Earth's even
zonal harmonics, the effect of the time dependent Earth's gravitational field,
and in particular of the K1 tide, and the effect of particle drag
