Question: When The Empire Arrives At Hoth, What Does Vader Mean By Saying They Came Out Of Hyperspace Too Close To The System?

I’ve always took this to mean that by coming out of hyperspace so close, they couldn’t launch their ground attack from that position and had to either go around the planet for another pass or had to basically turn around a bit and reposition themselves and that wasted time gave the Rebellion just enough time to see them coming. But I was curious if this was ever explained for certain. I did read the novelization but that was 32 years ago lol.