(Reuters) - North Korea said it test fired its massive new Hwasong-17 intercontinental ballistic missile (ICBM), in what analysts said may be the first successful launch of the system after doubts were raised about earlier claims.

HOW BIG IS THE MISSILE?

The Hwasong-17 is nuclear-armed North Korea's biggest missile yet, and is the largest road-mobile, liquid-fuelled ICBM in the world.

Its diameter is estimated to be between 2.4 and 2.5 metres, and its total mass, when fully fuelled, is likely somewhere between 80,000 and 110,000 kg, according to 38 North, a U.S.-based programme that monitors North Korea.

Unlike North Korea's earlier ICBMs, the Hwasong-17 is launched directly from a transporter, erector, launcher (TEL) vehicle with 11 axles, photos by state media showed.

HOW FAR CAN IT FLY?

The missile launched on Friday flew nearly 1,000 km (621 miles) for about 69 minutes and reached a maximum altitude of 6,041 km, state news agency KCNA reported on Saturday.

Japanese Defence Minister Yasukazu Hamada said the weapon could travel as far as 15,000 km (9,320 miles), enough to reach the continental United States.

PREVIOUS LAUNCHES?

North Korea previously claimed it had successfully launched a Hwasong-17 for the first time on March 24, when state media said it flew for 67.5 minutes to a range of 1,090 km (681 miles) and a maximum altitude of 6,248.5 km (3,905 miles).

After that launch, however, analysts and intelligence officials in South Korean and the United States had concluded that the North had actually launched a Hwasong-15, which was first tested in 2017.

PREVIOUS SIGHTINGS?

North Korea first unveiled the previously unseen ICBM at an unprecedented pre-dawn military parade in October 2020, with analysts noting it appeared "considerably larger" than the Hwasong-15.

Some observers said that the satellite technology that North Korea claimed to have tested in the Feb. 27 and March 5 launches could also be used for a multiple independently targetable reentry vehicle (MIRV) system, potentially allowing a single missile to drop nuclear warheads on different targets.

North Korea has made preparations to resume nuclear testing for the first time since 2017, South Korea and the United States say, and officials say new tests could help develop warheads for MIRV systems.