They repeatedly declined to offer an estimate, saying that doing so would reveal US knowledge about North Korea's capabilities, but Stewart warned the panel the risk was growing. "This system, last tested in February, has a shorter range than the missiles launched in North Korea's three most recent tests", a White House official said, as cited by Reuters.
The location from where the military believed the missile was launched was also incorrect, as new North Korean video and photographs showed that the launch site was in Anju, not Pukchang as Seoul had initially announced.
North Korea's official Korean Central News Agency called the missile a "new ground-to-ground medium long-range strategic ballistic rocket", and said the "Hwasong-12" was "capable of carrying a large, heavy nuclear warhead".
Kim Jong-un supervised the launch and expressed "great satisfaction" over its results.
Both Koreas - plus anti-Pyongyang activists based in the South - send leaflets across the border, tied to gas-filled balloons.
This technology is key to ensuring that the warhead is able to withstand the vibrations and heat of the flight's terminal phase before the impact.
Pyongyang said the launch had been a success and that the missile could now potentially by mass-produced.
USA and South Korean officials and experts believe the North is several years away from having such a capability.
Uruguay's mission to the world body said the meeting, the second in as many weeks, is set for Tuesday and was requested by the United States, South Korea and Japan.
The two missile tests in a week complicate plans by South Korea's new president Moon Jae-in to seek ways to reduce tension on the peninsula. But obviously, if North Korea takes actions that threaten the South Korean forces or our own forces then that would be met with an appropriate response... "We don't see why dialogue can not take place in the current situation now".
Moon, South Korea's first liberal leader in almost a decade, said as he took his oath of office last week that he'd be willing to visit the North if the circumstances were right.
The new statement said the Security Council members "vowed to fully and comprehensively implement" all measures the council imposed on Pyongyang and urged other United Nations member states to do the same.
"North Korea's repeated missile launches are a grave threat to our country and a clear violation of UN resolutions", Abe told reporters, adding that Japan would stay in close touch with the United States and South Korea.
When asked on Tuesday if Beijing was talking to Washington about possible new sanctions, China's U.N. Ambassador Liu Jieyi said: "It's up to the council to decide what we should do in the current situation".
US President Donald Trump labelled North Korean dictator Kim Jong Un a "madman with nuclear weapons" during a private phone conversation with Philippines President Rodrigo Duterte last month, just days before stating publicly that he would be "honoured" to meet Kim.