We present a survey for bright Kuiper Belt Objects ( KBOs ) and Centaurs , conducted at the Kitt Peak National Observatory ( KPNO ) 0.9 m telescope with the KPNO 8k Mosaic CCD .
The survey imaged 164 sq deg near opposition to a limiting red magnitude of 21.1 .
Three bright KBOs and one Centaur were found , the brightest KBO having red magnitude 19.7 , about 700 km in diameter assuming a dark Centaur-like 4 % albedo .
We estimate the power-law differential size distribution of the Classical KBOs to have index q = 4.2 ^ { +0.4 } _ { -0.3 } , with the total number of Classical KBOs with diameters larger than 100 km equal to 4.7 ^ { +1.6 } _ { -1.0 } \times 10 ^ { 4 } .
Additionally , we find that if there is a maximum object size in the Kuiper Belt , it must be larger than 1000 km in diameter .
By extending our model to larger size bodies , we estimate that 30 ^ { +16 } _ { -12 } Charon-sized and 3.2 ^ { +2.8 } _ { -1.7 } Pluto-sized Classical KBOs remain undiscovered .