Questions tagged [hayabusa2]
The hayabusa2 tag has no usage guidance.
8
votes
1answer
161 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 ...
3
votes
0answers
34 views
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 ...
0
votes
0answers
23 views
Are Hayabusa-2's high gain antenna disks electrically point-able?
Writing this answer I realized that Hayabusa-2 has two very similar looking circular flat disks that serve as it's high gain antennas. One is dedicated to X-band (7-8 GHz) and the other to Ka-band (32 ...
2
votes
2answers
76 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
vote
1answer
66 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 ...
3
votes
1answer
125 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
votes
1answer
204 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
votes
1answer
128 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
votes
0answers
64 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 ...
4
votes
1answer
122 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
votes
1answer
100 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
votes
1answer
164 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’...
1
vote
0answers
32 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’...
8
votes
1answer
124 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
3
votes
2answers
346 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 ...
