ИСТИНА

We have discovered spectral signs of simultaneous sublimation and dust activity on four main-belt primitive asteroids (145 Adeona, 704 Interamnia, 779 Nina, and 1474 Beira) connected likely with shortening their heliocentric distances and elevation of the subsolar and average subsurface temperatures. Then, we have undertaken control spectrophotometric observations two of them, namely 779 Nina and 704 Interamnia, at the time of their next passage perihelion, to confirm action of the processes. Here we show that the recent results turned out to be in agreement with our prior conclusions and suggestions.