What are these red pixels artifact on T4i image?

Hi:

I have a brand new T4i. I've been taking a few test shots and found this while taking photos at Jupiter.

I know cameras can come with stuck pixels, hot pixels, dead pixels, etc. But I don't know what this is, specially because I found it in several, but not all pictures. Any help?  The image is 100% crop, saved png with 0 compression.

Thanks,

Carlos