Http Headers: Redirected because not allowed?

What's the correct header to say 'you are not authenticated/authoriz开发者_StackOverflowed to access the content of this URL, so I'm redirecting you somewhere else (eg: login page)'.

Is it fine to just use a 302 ? Or maybe a 307 ?

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401 is unauthorized, there is no unauthorized and redirection (301/307) in the same HTTP status.

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I'd issue a 401 with a link in the body and a timed javascript redirect.