ИСТИНА

As it seems, condensation and accumulation of volatile compounds (H2O, CO2, CO, etc.) in the internal Solar System beyond the "snow-line" (actually, in its more wide vicinity) was one of the key processes that influ-enced the formation of not only proto-Jupiter and other giant planets, but also a swarm of smaller planetary bodies herein, including asteroids. If such a scenario thought to be natural for primitive-type bodies filling the periphery of the main asteroid belt and father, it raises questions in the case of unusual combination of low and high temperature compounds on some other asteroids (e. g., [1-3] ). Somehow or other, this issue is one of the fundamental for our solar system. It is important to note that ellipticity of asteroid’s orbit (at its different insolation) creates a natural way to test asteroid stuff on the presence of volatile com-pounds. We have obtained new spectroscopic (June 2017) and UBVRI-photometric (September-November 2017) data confirming sublimation activity of (704) Interamnia, F(or B)-type main-belt asteroid, near its perihelion distance. The phenomenon on Interamnia and three other primitive main-belt asteroids near peri-helion was first discovered by us in September 2012 (Busarev et al., 2015, 2016).