Recently I've been reading about a bit of Chinese space stuff and I found the accusation that the US hid orbital data for the asteroid 4179 Toutatis after China announced that they planned to send Chang'e 2 there, in 2012. Now while this the US isn't exactly against slights and this was very soon after the Wolf amendment, this still feels pretty extreme and I haven't found any mention of it in Western sources. (though that's probably not a big surprise)
Can this accusation be verified?
Weiren said that China's lunar exploration project started in 2003. Although the number of launches is not many, the results have been fruitful. After Chang'e-2 completes its lunar exploration, it will detect the L2 point of Lagrange and make a leap detection of the asteroid Tutatis. He recalled that the orbits of many small celestial bodies in the world are only available in the United States, and they were originally open to the world. When China announced that it would detect Tutatis, the United States immediately shut down all relevant orbital data. (google translated quote)