The binary stars are actually fairly small and cold but the two of them together form a very stable system.
A planet known as being "very uninhabitable". Specific reactions of mana and chemicals in its atmosphere results in intense extremes on either side of the planet. During the day the rock is practically molten with surface temperatures reaching 1800 degrees celsius and during the night the temperatures drop to -180 celsius and weird shit starts happening. The surface of the planet reshapes every day as it is heated and cooled so construction of facilities immune to these temperature swings would never have a stable spot to actually sit.
These reactions create some very valuable crystals that can be harvested on the dark side of the planet while they are cooled solid.
A ball of dust that has no real value except for the remains of a scientific colony that once studied the silnian ichor. After the ichor broke loose everyone was killed until its queen was released and the colony taken over by a cat. The planet was specifically chosen for its total lack of anything useful just in case the swarm did escape, turned out to be a prudent decision.
It's moon has a small presence of foliage equating to a thin layer of moss covering the planet's surface that traps all the moisture available on the planet.
A world with more a more advanced ecosystem, laying in the comfortable range from the sun. The atmosphere is lethal to Sol based life forms due to the high presence of toxic gases and the gravity isn't quite right, being a bit lower than might be healthy. The ecosystem that exists consists mainly of primitive life forms and micro-organisms dwelling among bizarre stationary things akin to plants though with only the similar trait of converting energy from the sun for their own use.
PZ142-3 Alpha is very wet and warm, with most of its landmass buried underwater. There are ruins of an ancient civilization here and signs of a runaway ecosystem that caused the planet to flood and the original inhabitants to die at the height of their own civilization. They were clearly intelligent, just not intelligent enough to prevent their own demise.
A dust ball that is very cold.