Tag: Japan

Hayabusa-2 sees its shadow

9:24 am

Ryugu, with Hayabusa-2's shadow

During its aborted landing rehearsal last week Hayabusa-2 imaged its own shadow as it approached within 600 meters of Ryugu.

The shadow is only a little dot on the surface of the asteroid, but to have resolved it is quite impressive. The image on the right has been annotated by me to indicate the shadow.

They have not said when they will do another landing rehearsal. Meanwhile, two of the spacecraft’s mini-landers are expected to be released sometime in the next few days.

Update: Based on the raw navigation images being released in real time from Hayabusa-2, the release of the MINERVA-II-1 has begun, with Hayabusa-2 moving in towards Ryugu in preparation for that release.

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Dress rehearsal of Hayabusa-2’s landing scrapped

9:22 am

The dress rehearsal of Hayabusa-2’s eventual landing on the asteroid Ryugu was cut short yesterday when the spacecraft found it could not get a reliable distance reading of the surface once it descended to 600 meters.

The problem was apparently due to the pitch black surface of the carbon-rich asteroid that made laser distance measurements difficult. JAXA says the Hayabusa 2 is in good condition, and the agency is considering changing landing procedures such as adjusting the configuration of measuring devices.

Despite the suspension, the altitude of 600 meters the explorer has descended to the asteroid is the closest ever recorded. JAXA had planned to bring down the probe to 30 meters and make detailed observations of a landing spot.

Just to clarify, this was a height record for Hayabusa-2 only.

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Japan to launch space elevator experiment to ISS

5:40 pm

When Japan launches its unmanned freighter to ISS on September 10, it will carry a two-cubesat engineering test of some of the concepts required to build a space elevator.

In the experiment, which will be the first of its kind in space, two ultrasmall cubic satellites, or “cubesats,” will be released into space from the station. They will be connected by a steel cable, where a small container — acting like an elevator car — will move along the cable using its own motor. A camera attached to the satellites will record the movements of the container in space, according to the Japanese newspaper The Mainichi.

Each cubesat measures just under 4 inches (10 centimeters) on each side. The cubesats will be connected by a 33-foot-long (10 meters) steel cable for the “elevator car” to move along, according to the report.

I wonder if this experiment will also test some of the technology needed for generating electricity using a tether. Over the decades there have been a number of experimental attempts in space of this concept, all of which have failed for a variety of reasons, all unrelated to the concept itself.

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Hayabusa-1 sample pins down age of asteroid

9:19 am

Using particles gathered by Hayabusa-1 Japanese scientists have determined the age of the asteroid Itokawa.

Japanese scientists, including those from Osaka University, closely examined particles collected from the asteroid Itokawa by the spacecraft Hayabusa, finding that the parent body of Itokawa was formed about 4.6 billion years ago when the solar system was born and that it was destroyed by a collision with another asteroid about 1.5 billion years ago.

These results are only the beginning. As more samples return from more asteroids, scientists will start to add details to the overall history of the formation and evolution of the solar system, adding significant depth to the rough outline they presently have. And these new samples are already on the way, with both Hayabusa-2 and OSIRIS-REx approaching their target asteroids.

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Hayabusa-2 science team lay out Ryugu landing schedule

8:41 am

At a press conference yesterday the Hayabusa-2 science team laid out their landing schedule for the spacecraft and its three tiny landers.

The first lander will be one of its two tiny MINERVA-II probes, and will take place in September. This will be followed by the German/French MASCOT probe in early October, followed in turn in late October by Hayabusa-2 itself.

The landings of the first two probes will help them pick Hayabusa-2’s landing site, as well as the site for last MINERVA lander.

Mission planners faced tough choices because the body almost uniformly strewn with boulders. “Ryugu is beautiful, but challenging,” said Aurélie Moussi, a collaborator from the French space agency CNES in Toulouse, at a press conference in Sagamihara, Japan, on 23 August.

…To minimize risks for MASCOT, mission planners mapped the topography of Ryugu and the distribution and size of the boulders on its surface. They ran computer simulations to produce a shortlist of ten options, and then picked one spot on the asteroid’s southern hemisphere. The choice reflected a number of criteria, including average temperatures on the ground and the materials that MASCOT will analyse with its four on-board instruments. “The other sites would have been just as good, or just as difficult,” says MASCOT payload manager Stephan Ulamec of the German Aerospace Center in Cologne. “Wherever we look, there is a lot of big boulders.”

It does appear that the boulder-strewn surface is posing a problem for the engineers.

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Second Japanese official indicted in JAXA bribery scandal

8:59 am

Japanese authorities have now indicted a second government official for taking bribes in connection with space work by the country’s space agency JAXA.

Kazuaki Kawabata, 57, the former director-general for international affairs at the ministry, allegedly received bribes worth about 1.5 million yen ($13,570) in the form of wining and dining.

Koji Taniguchi, 47, who served as an executive of a medical care consulting company, was also indicted on Aug. 15 on a charge of providing the bribes to Kawabata. Taniguchi had already been indicted in a different scandal on a charge of helping another education ministry official, Futoshi Sano, receive bribes from Tokyo Medical University executives.

According to the announcement by the Special Investigation Department of the Tokyo District Public Prosecutors Office, Kawabata was on loan to JAXA from August 2015 to March 2017, where he worked as a vice president. During the period, he was wined and dined more than 20 times in return for giving favors to the consulting company. The lavish drinks and dining totaled 1.5 million yen, including taxi fares.

None of this is really news. It is standard operating procedure at the higher levels of most government operations. These guys simply weren’t smart enough to disguise their corruption very well.

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Hayabusa-2 finds Ryugu covered with scattered large boulders

11:02 pm

Hayabusa-2 has found that the asteroid Ryugu is covered with many scattered large boulders.

The Hayabusa 2 space probe discovered many boulders scattered on the asteroid Ryugu, suggesting it was formed from fragments of other celestial bodies, the Japan Aerospace Exploration Agency (JAXA) said July 19. More than 100 rocks larger than 8 meters in length were confirmed on the surface of the “spinning top” asteroid from images captured by Hayabusa 2, according to JAXA. The largest boulder was about 130 meters in length near the south pole.

The rocks are likely too big to be meteor fragments from collisions with Ryugu, which has a diameter of about 900 meters. “(The finding) is compelling evidence to prove that the Ryugu asteroid was formed by fragments of larger celestial bodies,” said Seiichiro Watanabe, head of the study team and professor of Nagoya University.

The asteroid’s slightly tilted axis of rotation gives Ryugu two seasons: summer and winter. Hayabusa 2 found the temperature ranged from about 20 to 100 degrees on Ryugu’s surface.

Surprise! This finding makes Ryugu very different from every other asteroid previously visited. Most have had relatively smooth surfaces, with lots of dust.

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Private Japanese smallsat rocket fails at launch

8:26 pm

Capitalism in space: The second test flight of a private Japanese smallsat rocket company, Interstellar Technologies, today failed immediately at launch.

A rocket developed by a Japanese startup company burst into flames seconds after a failed liftoff Saturday in northern Japan.

The MOMO-2 rocket, developed by Interstellar Technologies, was launched in Taiki town on Hokkaido, Japan’s northernmost main island. It was supposed to reach as high as 100 kilometers (62 miles) into space. Television footage showed that the 10-meter (33-foot) pencil rocket lifted only slightly from its launch pad before dropping to the ground, disappearing in a fireball. Footage on NHK public television showed a charred rocket lying on the ground.

The incident caused no injuries.

Rocket science is hard. Competition and freedom carries risks. This company might not be dead, but this failure is definitely a significant setback.

Posted from Belize.

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Ryugu seen from 150-200 miles

8:41 am

Ryugu from 150 milesl

Cool image time! Hayabusa-2’s approach to asteroid Ryugu continues. The image to the right, cropped to post here, shows one of four images taken by the spacecraft on June 17 and June 18. In this image the distance is about 150 miles. As noted in the Hayabusa-2 press release,

The shape of the asteroid looks like a spinning top (called a “Coma” in Japanese), with the equatorial part wider than the poles. This form is seen in many small asteroids that are rotating at high speed. Observed by radar from the ground, asteroid Bennu (the destination of the US mission, OSIRIS-REx), asteroid Didymous (the target of the US DART project), and asteroid 2008 EV5 that is approaching the Earth, all have a similar shape.

On the surface of asteroid Ryugu, you can see a number of crater-like round recessed landforms. In the first image, one large example can be seen with a diameter exceeding 200m. This moves to the left and darkens as the asteroid rotates and the lower part becomes cast in shadows.

The bulge at the equator forms a ridge around the asteroid like a mountain range. Outside this, the surface topology appears very ridge-shaped and rock-like bulges are also seen. These details should become clearer as the resolution increases in the future.

Based on the visible landforms, they presently estimate Ryugu’s rotation period to be about 7.5 hours.

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Hayabusa-2 takes first photos of target asteroid Ryugu

8:34 am

On June 10 Hayabusa-2 took its first photos of Ryugu, the asteroid it will reach later this month.

The Sunday photos were taken when Hayabusa2 was about 930 miles (1,500 kilometers) from Ryugu. Last week, JAXA released a few ONC-T images taken on June 6, when the probe was 1,615 miles (2,600 km) from the space rock.

Hayabusa2, which launched in December 2014, is scheduled to arrive at Ryugu on or around June 27. At that time, the probe will begin orbiting the asteroid at an altitude of about 12 miles (20 km), JAXA officials have said.

Hayabusa2 will then start prepping for a series of complex, up-close studies of the space rock. If all goes according to plan, over the ensuing 12 months, the spacecraft will deploy three rovers and a lander on Ryugu’s surface, gouge out a small crater using an explosives-bearing impactor, and collect samples from the newly created crater.

The spacecraft will depart Ryugu in November or December 2019, and its collected samples will come back to Earth in a special return capsule in late 2020.

The image suggests that the asteroid is “not significantly elongated.”

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Japan’s space agency to build reusable rocket

8:43 am

Japan’s space agency JAXA revealed today that it plans to build a reusable rocket capable of launching twice in two days, with the first test launch now scheduled for 2019.

The Japan Aerospace Exploration Agency, or JAXA, plans to build a rocket that can carry observation equipment into space, return to Earth, and be ready for launch again the next day. JAXA aims to start test-launching and landing the roughly 7-meter rocket as early as the spring of 2019, and introduce it for regular operations in the 2020s.

JAXA has already confirmed that the rocket’s key components, including its engine, can endure more than 100 launches, significantly reducing costs compared with single-use models.

I hate to be such a spoilsport, but I have little faith they will do this on the schedule claimed. This story reads like the dozens I’ve read over the past three decades from Russia and NASA, where they repeatedly announce the coming development of some new rocket or manned space project, none of which ever happens.

In other words, this story is nothing more than a bit of government propaganda, trying to convince the Japanese public that JAXA is cutting edge, that they too are going to build reusable rockets, and that they can do it quickly. In reality, I doubt we shall see this government-built reusable rocket anytime soon.

The fact that they have issued this claim however is a good sign. Japan’s lumbering and expensive government space agency is now finding itself under pressure to deliver, and the competition that is causing that pressure might very well force them to streamline their operations and actually accomplish something.

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Japan creates $1 billion fund for private space start-ups

7:59 am

The new colonial movement: Japan’s government has created a $940 million fund that will be used to help new space companies get started.

The funds will be made available through investments and loans over the next five years, as part of a government-led initiative to double Japan’s more than $11 billion space industry. With less than 20 Japanese space start-ups currently operating, many see this as critical to helping new companies cover costs such as research or applying for patents. “We believe this will be remembered as a turning point for our burgeoning industry,” Takeshi Hakamada, CEO and founder of lunar exploration start-up ispace, said in a statement.

Ispace has received government backing in the past, including during a recent $90.2 million round of funding that included Suzuki Motor and Japan Airlines. Founded seven years ago, ispace is stepping beyond the Google-backed Lunar XPRIZE competition to fund two exploration missions to the moon, with the first by the end of 2019 and the second by the end of 2020.

The Japanese government is setting up an agency to manage the funds and connect start-ups with local talent from organizations such as the Japan Aerospace Exploration Agency or the rocket-building arm of Mitsubishi Heavy Industries. Initially, start-ups will be eligible to each receive about $100,000 in aid to help present concepts to investors. Promising ventures and more mature companies will be able to tap into the rest of the $940 million fund to further development.

More details here.

The most interesting aspect however of this new effort is the decision by Japan to also review its space law in order to encourage private ownership in space.

Japan also announced it is considering new laws and policies that would allow businesses to own plots of land developed on the moon, in a similar manner to the laws passed by the United States and Luxembourg. So far, the U.S. and Luxembourg are the only two countries in the world to have passed laws giving corporations ownership of materials mined in space, but only after they’ve been extracted. That legal framework has seen the tiny European country attract dozens of space companies, with another 70 space companies looking to establish in Luxembourg, according to Deputy Prime Minister Etienne Schneider.

They will find, as have the U.S. and Luxembourg as well as UAE, the United Kingdom, and a number of other countries that have reviewed the Outer Space Treaty, that this legal framework under this treaty will not work well, and still leaves the ownership rights of private companies very vulnerable. To protect property rights in space, either the Outer Space Treaty has to be changed to allow the establishment of national borders and laws, or dumped entirely.

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Japan successfully launches reconnaissance satellite

6:36 am

Japan’s space agency JAXA today successfully launched a reconnaissance satellite for the Japanese government.

The Japan Aerospace Exploration Agency and Mitsubishi Heavy Industries, the H-2A rocket’s main contractor, did not provide a live video webcast of the mission. But news media and other spectators near the launch pad streamed the launch live online, and announcements over loudspeakers at the Tanegashima press site confirmed separation of the IGS Optical 6 satellite in orbit.

The spacecraft’s specifications, including its imaging performance, are kept secret by the Japanese government. But the government has acknowledged the satellite will join a fleet of Information Gathering Satellites operated by the Cabinet Satellite Intelligence Center, which reports directly to the Japanese government’s executive leadership.

The leaders in the 2018 launch standings:

7 China
4 SpaceX
3 Japan
2 ULA
2 Russia

There have been 21 launches in the first two months, continuing January’s pace that suggests we will see more than a hundred launches in 2018, the highest number since 1990.

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Japan’s newest rocket puts tiny satellite in orbit

10:19 am

Japan today successfully launched a cubesat into orbit using a redesigned suborbital rocket flying its second test flight.

Standing just 31 feet (9.5 meters) tall and spanning around 20 inches (52 centimeters) in diameter, the SS-520-5 rocket was modest by launcher standards. With Saturday’s successful flight, the solid-fueled booster became the smallest rocket to ever put an object in orbit around Earth. A student-built shoebox-sized CubeSat named TRICOM 1R — weighing in at about 10 pounds (3 kilograms) — was mounted on top of the SS-520-5 rocket for liftoff from the Uchinoura Space Center in Japan’s Kagoshima prefecture.

This rocket, built by Japan’s space agency JAXA, is only a test vehicle. There are no plans to offer it as a commercial product, the agency hopes it will serve as a model that private companies can use to build their own. This approach might work, but it reminds me too much of many past and similar NASA projects, which once completed then vanished, with no real world utilization.

The 2018 launch standings:

6 China
2 SpaceX
2 ULA
2 Japan

I have dropped listing the countries that so far only have one launch.

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Japan’s Epsilon rocket successfully launches radar satellite

5:34 pm

Japan today successfully completed its first launch of 2018, placing an experimental radar satellite into orbit that was built under a new cost saving approach.

The ASNARO satellites are designed to be small, lightweight spacecraft with masses around 900-1,300 pounds (400-600 kilograms) with a common spacecraft bus largely built from commercial-off-the-shelf parts and interchangeable payload sections. This commonality is designed to reduce cost and simplify mission planning and preparation.

Epsilon itself is also designed under the same approach. Both are part of Japan’s effort to streamline its space industry to make it more competitive.

The launch standings:

3 China
1 SpaceX
1 ULA
1 India
1 Japan

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Japan’s Google Lunar X-Prize rover arrives in India for launch

12:07 am

Capitalism in space: The rover being built by the Japanese team competing for the Google Lunar X-Prize has arrived in India for installation on the PSLV rocket that will launch it into space.

The Sorato rover which is flight ready will be mounted on Team Indus lander at its facility in Jakkur. HAKUTO, one of the five teams competing for the Google Lunar XPRIZE, has signed a ride share agreement with Team Indus (India’s first private aerospace startup) for launching the Sorato along with the Indian rover.

Team Indus’s spacecraft, along with the two rovers, will also carry a few payloads and will be launched onboard ISRO’s workhorse, the PSLV-XL. The launch is expected to take place early next year (before March 8, 2018, the date set by Google to the five privately funded teams to launch the landers and the rovers on the Moon surface).

Several important details here. First, though the Japanese team appears to have all the necessary funds to pay for their flight, Team Indus is still searching for investment, and might not have the money to pay for its share of the flight. What will happen in that case is unclear.

Second, the word Hakuto in Japan means “white rabbit.” This name was chosen because Japanese folklore says a rabbit can be seen in the dark areas of the Moon’s face. This makes Japan’s rover the second rabbit to fly to the moon, after China’s Yutu rover, which in English means “jade rabbit” a name also based on Chinese folklore.

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Japan to make second launch attempt of world’s smallest orbital rocket

9:44 am

JAXA, Japan’s space agency, has announced that it will make a second launch attempt in December of what would be the world’s smallest orbital rocket.

The rocket, measuring 10 meters long and 50 cm in diameter, will carry a “micro-mini” satellite weighing about 3 kg developed by the University of Tokyo to collect imagery of the Earth’s surface.

The launch scheduled for Dec. 25 will feature the fifth rocket in the SS-520 series. The Japan Aerospace Exploration Agency (JAXA) is hoping small rockets made with commercially available components at low cost will help fuel the growing global demand for micro-mini satellites. JAXA used components found in home electronics and smartphones for the rocket, which is about the size of a utility pole.

The previous launch failed when vibrations during liftoff caused a short-circuit that cut off communications, forcing them to terminate the flight.

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