Prime, Mezina and Yurn are the stars of my This Primal World webcomic. Initially I had it that their masses were as such:

Prime: 0.98 solar masses
Mezina: 0.95 solar masses
Yurn: 0.13 solar masses

This officially put Yurn as a M type red dwarf star while Prime and Mezina were in the G type yellow dwarf. But I have changed a few things so here is the new official and final masses.

Prime: 0.92 solar masses
Mezina: 0.83 solar masses
Yurn: 0.22 solar masses

So what has this changed? Nothing! Well it now means that Prime remains a G type that is smaller than the sun, less hot and less luminous. But its still a very bright star and quite large. Expected lifespan of 13 billion years. So it will live a little longer than our own sun will. Current age about 4 billion years old.

Mezina changed the most because now it is a K-type star. But this means that Mezina is only about as bright as a full moon during summer and nights, as Mezina never truly sets during the summer from Prima's perspective. During the summer, Prima is actually in transitioning in between Mezina and Prime and the tilt of the planet makes it appear Mezina never sets fully during that time. During the winter, both set because Prima is orbiting Prime while Mezina is behind Prime from Prima's perspective, which means nights are much darker during the winter than summer. Expected lifespan of 30 billion years. Current age is about 4 billion years old.

Yurn is still an M type red dwarf. It is just bigger now and a little more visible during the day on Prima. I wanted Yurn specifically to be bright enough to see during the day as I have been implying in the webcomic. If you ever see the sky in my panels, I generally have all three of them in the sky. Anyway, I wanted Yurn visible during the day but not so bright that it would dominate the night sky more than Prima's moon, Lita-Ada. Expected lifespan around 450 billion years. Current age unknown but assumed to be about 9 billion years old.

The system is still the same: a binary star system with a G and K type star and an M dwarf in circumbinary orbit. Yurn was always the oldest which means it was actually caught and kept by Prime and Mezina because it crossed too close to their system and became gravitationally bound to it. The orbits are a tad closer than they used to be. Prime and Mezina now orbit at about 300 to 290 AU from each other while Yurn orbits them at about 920 to 890 AU away from where Prime would be, as Prime is considered the most dominant gravity... which I mean it IS the largest thing in the system so yeah. Makes sense.