* Andromeda is a constellation, not a star. It's a large area of the sky containing many stars.

* "Brightest" is subjective. It depends on how you measure brightness. Do you mean apparent brightness (how bright it appears from Earth)? Or absolute brightness (how much light it actually emits)?

* There's no single "brightest" star. Even if we focus on apparent brightness, the brightest star in Andromeda changes depending on how you define the constellation's boundaries.

To answer your question, we need to be more specific:

1. Which star are you referring to? Do you have a specific star in mind?

2. Are you interested in apparent or absolute brightness?

Once you clarify these points, we can find the temperature of that star.

Let me know, and I'll be happy to help!