This is a numeric market, how many years starting from now (2023 = 1, 2024=2, and so on), with a log scale.

According to this article, it is expected to be between 10000 and 100000, however the star has been acting strange recently. The fun part is we won't have much warnings.

https://www.scientificamerican.com/article/betelgueses-brightening-raises-hopes-for-a-supernova-spectacle/

Betelgeuse’s Brightening Raises Hopes for a Supernova Spectacle

Betelgeuse, the red star at the shoulder of the constellation Orion, has been acting strange, raising hopes for the spectacle of a lifetime

There is also this market but it is closed. Also I prefer a market not affected by technology expectations.

My other "star market" is affected by technology expectations more than astronomy predictions. I think it won't happen for this one.