Similar to stirges from the Monster Manual.

I've been playing around with Universe Sandbox, turns out that when you put the four planets of our Solar System into orbit around Alpha Centauri A, they are stable enough. I tried putting Saturn in a 1 AU orbit around Alpha Centauri B, and then putting Venus/Aphrodite at its customary distance of 0.72 AU and guess what happened? Saturn's gravity stretched out the orbit of Venus/Aphrodite, so that is not stable. I'm going to have to rethink that. One possibility is I could put Venus and Mars in an orbit around Saturn with Saturn at 0.72 au from Alpha Centauri B. Mars would be in a 24.5 hour orbit and Venus would go in a 100 hour orbit around Saturn, that is the next thing I'm going to try.