5B

5B or 5-B may refer to:

• Studio 5-B, a 1989 short-lived drama series about a Canadian TV news channel
• 5B, the production code for the 1978 Doctor Who serial The Pirate Planet
• 5B (film), a 2018 documentary about the AIDS crisis by Dan Krauss and Paul Haggis

• 5B is hexadecimal for 91 (number)
• 5B is the ASCII code for "["
  • Thus, %5B is URL encoding for "["

• Corot-Exo-5b, an extrasolar planet
• WASP-5b, an extrasolar planet
• Little Joe 5B, an unmanned Launch Escape System test of the Mercury spacecraft

• Boron (₅B), a chemical element
• 5B, the aircraft registration prefix for Cyprus

• B5 (disambiguation)

Topics referred to by the same term

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