1
I think they'll be adequate for anything that happens at periastron.
2
Not yet, but we're well past periastron now.
3
There was a project to provide shelters for the periastron storms set up ten years ago.
4
Mean they always acted this way at periastron?
5
Three days before periastron, they experienced a small earthquake, a thud followed by rumbling and groaning for about twenty seconds.
6
It seems that the government here knew all about the weather conditions they could expect at periastron, and had made plans for them.