D/1952 B1 Harrington-Wilson

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Hello Lars,

I’ve not heard of it being recovered. It would be a major comet news item if it was, because it has been lost for a very long time. Guide 9 gives a perihelion date of 2017 Feb 27 but it’s pretty meaningless!

I mentioned the 2017 ‘Defunct Comets’ at the end of this piece: