The Latitude Density Search utilized Hyper Suprime-Cam on Subaru Telescope to discover 60 moving objects in the outer Solar System , 54 of which have semi-major axes beyond 30 AU .
The two night orbit arcs are insufficient for tracking , but the images were acquired in exceptional seeing ( 0.4 \arcsec ) and reached a detection limit of m _ { r } \simeq 25.2 .
We searched the detections for binary sources , and identified one binary object with a separation of 0.34 \arcsec , the previously known object 2010 HE _ { 79 } ( 471165 ) .
Although we would have been able to identify binaries with the same separation and relative brightness for 18 % of the 54 trans-Neptunian objects in the search , or 88 % of objects with a brighter secondary , only one binary was found in the sample .
This detection rate is lower than expected based on previous work , particularly for the cold classical objects , and implies that the prevalence of binary trans-Neptunian objects with 7.5 \lesssim H _ { r } \lesssim 9 may be significantly lower than for larger objects .