# Comments on the regular wave planetology

### By G.G. Kochemasov

Bothering all planetologiests losses of spacecrafts (SC) in martian orbit have a direct
bearing on the regular wave planetology discussed at this symposium. The dramatic loss of
Mars-Observer in 1993 prompted searches for causes of one "enigmatic" phenomenon:
spacecrafts near Venus work well, near Mars often fall (generalization done by V.V.
Novikov, Sternberg Inst.).

Between 1961 and 1993 40 spacecrafts were launched to these planets: 24 to Venus and 16
to Mars. Of 16 martian SC serious troubles and losses occured in 9 cases,this gives safety
(stability) factor of 0,438. Of 24 venusian SC essential failures developed in 4 cases,
safety factor 0,834. Such "benevolent" venusian and "severe" martian orbits were
explained in two publications [1, 2].

The interference of individual standing warping waves of 4 directions, lengths of which
are connected with orbital frequencies, produces small granulas in Venus (p R/6) and large ones in Mars ( p R/2).
Venusian spheres are warped evenly, body sphericity is rather high; martian spheres are
stressed in one direction and extended in perpendicular one, this causes flattening,
dumb-bells appearance and low sphericity. Geometric sphericity (or stability) factors can
be determined as the area ratio of the circumscribed in a circle figure to this circle.
The figure shape depends on the wave number and is hexagon for Venus and elongated
rectangle for Mars. Sphericity factors are 0,830 and 0,420 respectively and they are
rather near to the above shown safety factors (0,834 and 0,438).

From 1996 to 1999 four SC were launched to Mars: Mars Pathfinder (1996), Mars Global
Surveyer (1996), Mars Climate Orbiter (1998), Mars Polar Lander (1999). Two of them (MCO
& MPL) disappeared in the martian atmosphere. A serious trouble was also with the
highly successful MGS. So, the safety factor is still about 0,5 as predicted earlier [1,
2]. Flattening a rotating body with atmosphere requires density sectoring of this highly
mobile medium (Theorem 4). The heterogeneous changing atmosphere is behind of this safety
factor.

[1] Kochemasov G.G. On losses of spacecrafts in martian orbit //Astronomicheskiy
Tsircular, Astronomy Inst.RAS, #1556, 1994, 37-38.

[2] Kochemasov G.G. Three "melons" and four "watermelons" in the inner solar
system: why all "melons" are in the martian orbit? //20^{th} Russian-American
Microsymposium on Planetology, Abstracts, Moscow, Vernadsky Inst., 1994, 44-45.