Questions tagged [hayabusa2]

Questions about spaceprobe Hayabusa2, an asteroid sample-return mission launched by the Japanese space agency (JAXA). The main goal of the mission is asteroid Ryugu.

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3
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2answers
140 views

Actual mass of Hayabusa 2 samples in 2020?

Similar to Actual mass of Hayabusa samples in 2010?, but about the recent mission. What is the actual mass of the samples retrieved by Hayabusa 2? The most detailed information I was able to find is: ...
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2answers
232 views

Why did Hayabusa-2's capsule's parachute have transparent panels?

JAXA's photo of Hayabusa-2's capsule, at its landing on 2020 Dec 6, shows that its parachute canopy had some non-opaque sections. Why? Transparency has no advantage for this mission. Compared to ...
8
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1answer
157 views

Why is the Hayabusa2 capsule collection team in protective gear

Pictures posted on twitter (https://twitter.com/haya2e_jaxa/status/1335513393122316288/photo/2 and BBC (https://www.bbc.com/news/science-environment-55201662) show a couple of team members in what ...
7
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1answer
90 views

How does Hayabusa2's return capsule orient and stabilize after separation and before and during reentry?

How does Hayabusa2's return capsule orient and stabilize after separation and before and during reentry? Have it some onboard system like RCS or reaction wheels, or does it rotate around longitudinal ...
4
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1answer
97 views

From interplanetary space to the Australian Outback, how will Hayabusa2's return capsule be tracked? Desert Fireball Network perhaps?

Wired.com's For the Second Time Ever, an Asteroid Sample Returns to Earth says that "the sample return capsule from Hayabusa2" will land "under parachute in the Australian outback" ...
3
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3answers
220 views

How to plot this orbit?

I have these data for some orbits, without any explanation about meaning of each datum: ...
3
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0answers
51 views

How large an asteroid sample does hayabusa2 have?

As the title says, is it known how big, or massive, hayabusa2's sample is, due for Earth touchdown on 6th December? I have tried some basic internet research but found nothing on the anticipated ...
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0answers
68 views

How do Hayabusa-2's DCAM's work? (detachable cameras)

The screenshot below from the JAXAxxx video Mission Control Live: Hayabusa2 SCI Operation shows a diagram with DCAM3, a detachable camera that has the lucky job of watching the impact on Ryugu while ...
4
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2answers
360 views

How far did Hayabusa-2 back off before the “bomb” went off?

The BBC News article Hayabusa-2: Japanese probe set to 'bomb' an asteroid says: The charge is carried on the Small Carry-On Impactor (SCI) device. This is a 14kg conical container attached to ...
9
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1answer
252 views

How far will the debris cloud from Hayabusa-2's touch-and-go sample recovery travel around Ryugu? Will any have escaped to heliocentric orbit?

HAYABUSA2 MOMENT OF TOUCHDOWN This animation, extracted from a longer video, shows the moment of Hayabusa2's 21 February 2019 touchdown on asteroid Ryugu. JAXA Source: Planetary Society's Watch ...
4
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0answers
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How can we be certain that Ryugu is a remnant of the material that did not form planets?

Its mentioned here https://www.theguardian.com/science/2019/feb/22/japans-hayabusa-2-successfully-touches-down-on-ryugu-asteroid that Ryugu is a part of the Solar System material that did not get ...
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2answers
164 views

How does Hayabusa-2's “Communication Simulator” on its website work? What does it show?

The pinned tweet on Hayabusa-2's Twitter account leads to http://haya2now.jp/en.html which is a kind of control panel readout of the spacecraft's situation. I clicked ...
1
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1answer
308 views

Diagram of Hayabusa 2 in “Hill Coordinate System”; what is that exactly? How to convert it to inertial?

These JAXA's Hayabusa-2's two Tweets: 1 2 show a diagram of the spacecraft's motion relative to Ruygu in what they call a Hill Coordinate System, This is a diagram of the trajectory during solar ...
5
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2answers
278 views

How does the hopping mechanism of the Minerva II rovers work?

The Minerva II rovers deployed to Ryugu by Hayabusa 2 have gotten a lot of news coverage for their hopping method of locomotion. Is there public information on exactly how this works? I seem to recall ...
10
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1answer
252 views

Why the MASCOT lander has no solar panels?

The MASCOT lander carried on Hayabusa2 just landed on Ryugu, completed it's mission and finshed operation as it has a non-rechargeable battery and no means to generate power. See this answer for more ...
4
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1answer
187 views

How much delta-v would Hayabusa-2 need per day to remain 20 km sunward of Ryugu?

Hayabusa-2 is near the astroid Ryugu, and both are essentially in nearly-matching heliocentric orbits around the Sun. Hayabusa-2's "hangout" is about 20 km sunward of Ryugu. For the purposes of this ...
3
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0answers
85 views

How are Hayabusa2's target markers deployed?

This presentation talks about 'target markers' which are five soft, reflective balls that are released onto the asteroid's surface prior to landing. They allow the probe to more precisely locate the ...
6
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1answer
206 views

Nature of Hayabusa-2's “Home Position” relative to Ryugu? Is it Ruygu's L1?

This tweet "from Hayabusa-2" via JAXA shows the diagram below, which seems to suggest that the Hayabusa-2 spacecraft tends to remain between the asteroid Ryugu and the Sun. Does Hayabusa-2 have to ...
5
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1answer
126 views

Do the rovers in Hayabusa-2 communicate directly with the spacecraft or use the landers as relay?

I can't infer this from this documentation or the presentation: Do the ROVER-1A and ROVER-1B communicate with MINERVA-II-1, and it then relays to the Hayabusa2 "mothership", or do they communicate ...
3
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1answer
197 views

What causes Hyabusa-2's close-up images of Ryugu to be dark in the corners?

The NYTimes' article Hayabusa2 Prepares to Drop Rovers on Asteroid Ryugu says Sept. 19 Rock Hoppers Hayabusa2 is preparing to deploy two small rovers this week, each about 7 inches wide. Ryugu’s ...
2
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1answer
63 views

What criteria was used to select potential landing sites for Hayabusa-2's rovers on Ryugu?

The NYTimes' article Hayabusa2 Prepares to Drop Rovers on Asteroid Ryugu says Sept. 19 Rock Hoppers Hayabusa2 is preparing to deploy two small rovers this week, each about 7 inches wide. Ryugu’s ...
8
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1answer
146 views

How long will MASCOT operate on Ryugu?

The MASCOT lander on Hayabusa 2 seems to be powered by batteries only, I couldn't find any reference to solar panels or an RTG. What is its expected lifetime on the asteroid? MASCOT page at CNES
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371 views

How could JAXA not know when Hayabusa2 will arrive at asteroid Ryugu?

The Nikkey Asian Review article Probe nears asteroid to unlock secrets to life's origins; Hayabusa2 mission includes return of samples after 18-month study begins: TOKYO -- A Japanese space probe is ...