TOKYO (Reuters) - Japan and Britain on Friday joined an international chorus of concern over a recent satellite-killing missile test by China -- the first known experiment of its type in more than 20 years.
"We are concerned about it firstly from the point of view of peaceful use of space and secondly from the safety perspective," Japan's Chief Cabinet Secretary Yasuhisa Shiozaki told a news conference.
Using a ground-based medium-range ballistic missile, the test knocked out an aging Chinese weather satellite about 865 km (537 miles) above the earth on January 11 through "kinetic impact," or by slamming into it, the U.S. National Security Council said earlier.
The last U.S. anti-satellite test took place on September 13, 1985. Washington then halted such Cold War-era testing, concerned by debris that could harm civilian and military satellite operations.
"We have concerns about the impact of debris in space and we've expressed that concern," British Prime Minister Tony Blair's spokesman told reporters, adding that discussions took place at the level of officials rather than ministers.
He said Britain did not believe the test contravened international law, but was concerned by the lack of consultation. The test was "inconsistent with the spirit of China's statement to the UN and other bodies on the military use of space," Blair's spokesman added.
The United States, Australia and Canada have already conveyed their concerns over the missile test to Beijing.
CHINESE PEACE PLEDGE
Japan, which has been patching up relations with China damaged by disputes over wartime history, has long been concerned about its giant neighbor's rising military strength and has called for more transparency from China on defense spending.
Last March, China announced a 14.7 percent rise in spending on defense to $35.3 billion.
Tokyo has asked the Chinese government for confirmation that the satellite-killing missile test took place and for an explanation of what China's intentions were, Shiozaki said.
"When we passed on the message, the Chinese side said they would take Japan's concerns into account and that they want to maintain the peaceful use of space," a Japanese foreign ministry official said.
China's Foreign Ministry would not offer immediate comment.
"We do not understand the situation and it would not be convenient for us to say anything," an official surnamed Zhang from China's Defense Ministry told Reuters by telephone.
According to David Wright of the Cambridge, Massachusetts-based Union of Concerned Scientists, the satellite pulverized by China could have broken into nearly 40,000 fragments from 1 cm to 10 cm or up to 4 inches, roughly half of which would stay in orbit for more than a decade.
The United States has been researching satellite-killers of its own, experimenting with lasers on the ground that could disable, disrupt and destroy spacecraft.
Marco Caceres, a space expert at the Teal Group, an aerospace consulting firm in Fairfax, Virginia, said China's test could bolster a host of costly military space programs, almost all of which are over budget and behind schedule.
(Additional reporting by Katherine Baldwin in London and Lindsay Beck in Beijing)