The DN-3 flight test was the eighth time China carried out an anti-satellite missile test. An earlier test occurred in July 2014, which China also asserted was a missile defense test.
State Department and Pentagon officials declined to comment on the anti-satellite test.
A Chinese Embassy spokesman said: “I don’t have detailed information about the missile test you mentioned.”
“China advocates for the peaceful use of outer space, and opposes space weaponization or arms race in space,” the spokesman said in an email.
A State official referred to a speech from February by Frank Rose, assistant secretary of State for arms control, verification and compliance, who commented on the 2014 test.
“Despite China’s claims that this was not an ASAT [anti-satellite] test; let me assure you the United States has high confidence in its assessment, that the event was indeed an ASAT test,” Rose said.
“The continued development and testing of destructive ASAT systems is both destabilizing and threatens the long-term security and sustainability of the outer space environment,” he added