In the 1975 one-hour special Into Infinity ("The Day After Tomorrow"), the spaceship Altares arrives at Alpha Centauri and launches a number of satellites. At least t
There seem to be two satellite models, one with a radar dish appearing in the final shot.
Both these models appeared in the spaceship graveyard scene in The Metamorph. The first capsule is prominently in the foreground, in front of the Eagle; the second is hidden behind the dragon ship.
From the Space City exhibition from 1977, with Dione's escape pod behind. The other craft appeared in the spaceship graveyard in The Metamorph
The last Altares satellite, which is mostly hidden in the Metamorph. Here it has lost it's radar on top.
This blue satellite appeared in the graveyard; it doesn't appear in Into Infinity, or in other episodes as far as we're aware.
Copyright Martin Willey