Ball of light vanishes in the SE

It appeared in the Wast, made its way East/ Southeast. looked like the headlight of the airplane, but when it got overhead, and even when it passed, it still looked like the light was shining  at us so maybe a sphere of light? once it passed overhead it zig zagged, but just enough to make it look like a wobble from that distance up. After that the ball of light had a small flash that was barely brighter than the craft/ ball of light itself. After the flash, it dimmed in the southeast direction, but the dimming was almost as if it was moving away VERY fast and not a dimming of the light itself.