| Help keep this category in order, modify [[Category:Hubble Ultra-Deep Field]] to add a sort key:
- Articles with the UDF number in the title
- use
[[Category:Hubble Ultra-Deep FIeld|#####]] , dropping the UDF prefix, and using only the number. The number should be padded up to 5 digits using zeroes.
- Articles without the UDF number in the title
- use
[[Category:Hubble Ultra-Deep Field]] . A redirect containing the UDF number should also be added to the category, sorted as above.
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