After Koenig falls victim to the avalanche, several "rocks" around him blow around in the wind.
The landing party had exited the Eagle through the starboard side of the ship and ventured out in that direction, but when they're returning to the Eagle, they're now in full view of the ship's port side.
While the landing party prepares for liftoff to the planet, Carter informs the Commander that the countdown to launch is twenty seconds. However, twice that time goes by before the engines fire up.
It was never mentioned that the moon had achieved orbit around the planet, but it appears quite close from the view of the planet's surface, which becomes devastated by shock waves from the moon exploding, which would not have happened unless the moon had been in orbit.