How long is the year of the planet Vulcan in Star Trek?

Question

Does anyone know any other information about the length of the Vulcan year in various Star Trek productions?

I have a problem with the length of the Vulcan year, so any additional data related to it would be useful.

You've done a huge amount of research here. Can I suggest that you move all of this question except the first and last paragraphs into an answer below? It's great info definitely worthy of an answer, and if someone else does find more info, you can always accept their answer to place it above yours. — Rand al'Thor, Commented Dec 25, 2020 at 10:03
Why did you write out the numbers? It takes up a lot of space in this already long q — Azor Ahai -him-, Commented Mar 22, 2021 at 19:58
After some consideration, I've removed the bottom portion of your "question". A lot of it is just making the same point repeatedly (complete with long, unneeded quotes) and the final few paragraphs seem to be trying to equate Vulcan to a real-world star system. — Valorum, Commented Sep 12, 2021 at 15:12
Addressed here. In short, there's nothing in canon and what's in the EU is a big jumbly mess — Valorum, Commented Sep 12, 2021 at 15:25
“I have a problem with the length of the Vulcan year” — you hear that, Vulcan? We ain’t scared to say it, your years are vague as hell. — Paul D. Waite, Commented Oct 12, 2021 at 19:55

Pete · Accepted Answer · 2021-09-12 15:34:31Z

6

Vulcan's sun is usually identified as 40 Eridani A. (Memory Alpha link)

Real world scientists have identified a planet in that system in the habitable zone, and probably fitting the description of Vulcan.

It has a period approximately equal to 42 earth days. (insert your own Douglas Adams reference)

answered Sep 12, 2021 at 15:34

Pete

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Is there any indication that the writers of the fictional Vulcan had any idea that this was the case?
– Valorum
Commented Sep 12, 2021 at 15:49
6

Gene Roddenberry stated Vulcan is orbiting 40 Eridani A so implicitly he accepted what that star's habitable zone was -which can be calculated far easier than observing a real planet. Of course whether anyone else writing for Star Trek uses real world science is another matter. projectrho.com/vulsun.htm Gene's 1991 letter to Sky&Telescope magazine.
– lucasbachmann
Commented Sep 12, 2021 at 19:24

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