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Not really. You calculate the orbit/position based on its position in the sky relative to stars. You calculate its size based on brightness. As you're measuring two different things, uncertainty about one doesn't mean uncertainty about the other
Like a car driving towards you with headlights on. You don't need to know what colour it is to know where it's going
frankenbike
NotThamesWater
So the end of the world is nigh. Anyone else slightly dubious about their claims there's "no chance" it'll hit earth as it passes between us & the moon when they can't even get the size locked down between 40-90m wide? I'm no scientist but surely there's at least a teenie tiny chance?
https://www.theguardian.com/science/2023/mar/24/city-killer-asteroid-to-pass-harmlessly-between-earth-and-moon