What are the pixel dimensions for creating an Apple ibook book cover?

Question

I'm trying to create a book cover for Apple ibooks, what are the pixel dimensions requirements?

Answer 1

Thanks again.
Apple seems to have made it more confusing than it should be.
As an aside, the Apple documentation contradicts itself.
Cover art (also known as a marketing image or jacket) should be at least 1400 pixels along the smaller axis and must be a JPEG or PNG file in RGB Color mode.
This clearly says the shorter side must be at least 1400 pixels. The next sentence says this:
For an average trade paperback, this could be 400 x 1400 minimum size, as the books are generally taller than they are wide.
That doesn't make sense, seeing that the shorter side is supposed to be at least 1400 pixels, meaning it should say "1400 x 4900" for the same aspect ratio.
...I did notice this too.
So, if as you say, that the Cover Art and Cover image terms are the same and the 2 million limit does not apply, then it is unclear to me why Apple sent this message to me about cover file being rejected
"Action Required: Your book could not be delivered to the iBookstore.
The following images are larger than two million pixels and must be resized:
Full ePub: Cover_xyz.jpg "
I'll probably need to have the cover file in epub and Cover Image for Asset in iTunes Producer be named differently (but be copies of the same file) so I can understand which one is the "problem" file.
And finally, why does Apple refer to Cover Art twice here and then end in last sentence with Cover Image if they are the same ( and if they are the same why not state "this cover image").
"Cover art (also known as a marketing image or jacket) should be at least 1400 pixels along the smaller axis and must be a JPEG or PNG file in RGB Color mode. For an average trade paperback, this could be 400 x 1400 minimum size, as the books are generally taller than they are wide. For best results, deliver the largest pixel dimensions possible. When possible, match cover art to the cover contained in the book file. The 2 million pixel maximum does not apply to the cover image".