Below you can see the front-view size comparison of the Fujifilm XP90 and Kodak Astro AZ651. The Kodak Astro AZ651 is clearly the smaller of the two cameras. Its body is 110 mm narrower, 71 mm shorter and 28 mm thinner than the Fujifilm XP90.
The chart below depicts how two cameras compare with average dimensions of the cameras in their class.