At the moment, the Hayabusa2 capsule is jetting back to Japan on a Dassault Falcon 7X aircraft.

Today's press conference is postponed from 11:00(JST). New start time will be announced when it is determined.
(Press Conference on Hayabusa2 Earth Return : Capsule Arrival at Sagamihara)

https://www.youtube.com/watch?v=SFAyw0Atosk...eature=youtu.be

(probably it will start around 12:00 JST)

From the press conference - https://www.youtube.com/watch?v=SFAyw0Atosk...eature=youtu.be :
Analyzes of the collected gas are ongoing, but it is very likely that it comes from Ryugu (the gas was extracted from the capsule body, not from the sample container)
1 - sample separation - 10% will be for NASA (but, judging from the drawing, not so fast)
2 - removing the sample container (from what I understood next week (?) we will find out how much sample is inside)

Press conference pdf (mostly in Japanese):
http://fanfun.jaxa.jp/countdown/hayabusa2/...usa2_1208-2.pdf
http://fanfun.jaxa.jp/countdown/hayabusa2/...usa2_1208-1.pdf

I ran it through a simple translator for those whose Japanese isn't so good. I believe AO stands for "Announcement of Opportunity", basically a JAXA academic proposal process.

Earth by Hayabusa2 during the flyby::

1. Distance 130000 km, December 6, 9:00 JST (about 6 and a half hours after the closest approach to the Earth)

2. Distance 88000 km, December 6, 6:30 JST (about 4 hours after the closest approach to the Earth)

Credit: JAXA

"The sample container inside the re-entry capsule was opened on December 14, and we confirmed black grains thought to be from Ryugu were inside. This is outside the main chambers, and likely particles attached to the sample catcher entrance." - https://twitter.com/haya2e_jaxa/status/1338469549822201856


Edit: Translation of the press release on JAXA website - https://www.jaxa.jp/press/2020/12/20201214-1_j.html :
"Confirmation of sampling of the asteroid Ryugu on the asteroid explorer "Hayabusa2" December 14, 2020, Japan Aerospace Exploration Agency
The Japan Aerospace Exploration Agency (JAXA) has confirmed a sample derived from the asteroid Ryugu from the sample container inside the re-entry capsule of the asteroid explorer "Hayabusa2". The Hayabusa2 re-entry capsule collected in Woomera, Australia on December 6, 2020 was delivered to the JAXA Sagamihara Campus on December 8, and after that, the sample container inside the re-entry capsule was opened. On the 14th of December, a black sand granular sample believed to be derived from the asteroid Ryugu was confirmed inside the sample container. This is thought to be the particles attached to the entrance of the sample catcher (the container in which the sample is stored). We will continue to open the sample catcher in the sample container, and the curation and initial analysis team will take out the sample and analyze it."

https://www-sankei-com.cdn.ampproject.org/i...12150029-p1.jpg

another picture of the sands

P

So we have the first samples of the asteroid visible to the naked eye !!!

"A large number of particles are confirmed to be in “sample chamber A” inside the collected capsule (~11:10 JST on 12/15). This is thought to be the sample from the first touchdown on Ryugu. The photo looks brown, but our team says “black”! The sample return is a great success!" - https://twitter.com/haya2e_jaxa/status/1338754705644634112

JAXA Press Release - https://global.jaxa.jp/press/2020/12/20201215-2_e.html :

"Analysis results from the gas collected from the sample container of the asteroid explorer, Hayabusa2. December 15, 2020 (JST). National Research & Development Agency
Japan Aerospace Exploration Agency (JAXA)

The Japan Aerospace Exploration Agency (JAXA) has confirmed that the gas collected from the sample container inside the re-entry capsule of the asteroid explorer, Hayabusa2, is a gas sample originating from asteroid Ryugu.

The result of the mass spectrometry of the collected gas within the sample container performed at the QLF (Quick Look Facility) established at the Woomera Local Headquarters in Australia on December 7, 2020, suggested that the gas differed from the atmospheric composition of the Earth. For additional confirmation, a similar analysis was performed on December 10 – 11 at the Extraterrestrial Sample Curation Center on the JAXA Sagamihara Campus. This has led to the conclusion that the gas in the sample container is derived from asteroid Ryugu.

The grounds for making this decision are due to the following three points:
- Gas analysis at the Extraterrestrial Sample Curation Center and at the Woomera Local Headquarters in Australia gave the same result.
- The sample container is sealed with an aluminum metal seal and the condition of the container is as designed, such that the inclusion of the Earth’s atmosphere was kept well below the permissible level during the mission.
- Since it was confirmed on the Sagamihara campus that gas of the same composition had been generated even after the removal of the container gas in Australia, it is considered that the collected gas must be due to the degassing from the sample.
 
This is the world’s first sample return of a material in the gas state from deep space.
The initial analysis team will continue with opening the sample container and performing a detailed analysis of the molecular and isotopic composition of the collected gas."

Sample size in chamber A (from the first touchdown on Ryugu) - based on: https://www.jaxa.jp/press/2020/12/20201215-3_j.html

From the latest JAXA press conference - https://www.youtube.com/watch?v=MVW3kazMTOY&t=4s
pdf - http://www.hayabusa2.jaxa.jp/enjoy/materia...201215_ver4.pdf
(only in Japanese)

Opening the sample container:

I translated some descriptions using Google

Edit:
and now JAXA has released the official English version of the press conference material - http://www.hayabusa2.jaxa.jp/en/enjoy/mate...15_ver3_en2.pdf

News from JAXA:

1. „The samples from asteroid Ryugu in the re-entry capsule weigh about 5.4g!
This greatly exceeds the the target yield of 0.1g (the amount required for the initial scientific analysis) set during the design of Hayabusa2.” - https://twitter.com/haya2e_jaxa/status/1339811691681308673

„This is weighed at the JAXA Sagamihara Campus Extraterrestrial Sample Curation Center on December 18, 2020, including the sample as a whole "Sample Catcher" in the sample container taken out from the re-entry capsule of the asteroid explorer "Hayabusa2". By doing so, the approximate total weight of the collected samples (total of A, B, and C chamber samples) was calculated from the difference from the weight of the "sample catcher" before launch. This does not include the amount of sample outside the "Sample Catcher" found on the bottom of the sample container on December 14th.” (a rough translation of this text - https://fanfun.jaxa.jp/topics/detail/17721.html )


2. "This photograph is the color-adjusted version of the photo released on December 15 (it looked brown due to the orange ambient light in the curation facility)" - https://twitter.com/haya2e_jaxa/status/1339813468883439624

So NASA should get around 0.5g. Not too much, but priceless!

For comparison, here are photos of my Murchison meteorite piece, which has a similar weight - 0.57g and a size of about 1.5 x 1 cm (but it's a slice)
[Murchison is carbonaceous chondrite - CM2, fell in September 1969 in Australia ]

I wonder if that's TOTAL total, or just the yield from sample chamber A? I would guess the latter.

According to this JAXA website - https://fanfun.jaxa.jp/topics/detail/17721.html :

about 5.4 grams is the sample as a whole from "Sample Catcher" (chambers A+B+C) - calculated from the weight difference of the whole „Sample Catcher” before flight and after return.

So:

5.4 g includes:
- sample in chamber A (from the first touchdown) - opened and photographed (not yet weighed)
- possible sample in chamber B - not yet opened (possibly from the second touchdown)
- possible sample in chamber C - not yet opened (rather, it should be empty).

5.4 g does not include an unknown amount of sample (not yet weighed) found at the bottom of Sample Container after removing the „Sample Catcher” - photographed (black „sand”). This sample was unexpected there (?) and is „a bonus”.

Thus, according to JAXA's calculations so far, no matter how much (or at all) there is material in the chambers B and C, the total weight of the samples from Ryugu is 5.4 g + an unknown (but small) amount from the bottom of the container.
(Well, unless there is a numerical error in JAXA's information. But it has been repeated in several places on the official JAXA sites)


In addition, an unknown amount of gas was also collected, coming (most likely) from the degassing of the sample. This gas was collected twice - in Australia and for the second time in Japan, which proves that it was still produced during the capsule transport. And as the capsule turned out to be well sealed, the gas probably comes from the sample itself and is emitted due to the heat prevailing in Earth's conditions (?) - http://www.isas.jaxa.jp/en/topics/002523.html


PS. As the mission Hayabusa2 assumed the minimum amount of sampled material as 0.1 grams, therefore 5.4+ grams means success of the mission - https://twitter.com/haya2e_jaxa/status/1339811691681308673

The target of the extended Hayabusa2 mission:

„The asteroid 1998 KY26 captured by the ultra-wide-field primary focus camera Hyper Suprime-Cam (HSC) mounted on the Subaru Telescope . An asteroid is a point light source (the position where two lines intersect) that moves to the right near the center of the image. Taken from 2:04 am to 2:16 am (Hawaii local time) on December 10, 2020.”

„...The diameter of this asteroid is estimated to be as small as about 30 meters, and it is so dark that it is very difficult to observe it from Earth without using a large telescope...”

Credit: NAOJ (National Astronomical Observatory of Japan) https://www.nao.ac.jp/news/topics/2020/20201218-subaru.html
English version: https://www.nao.ac.jp/en/news/topics/2020/2...218-subaru.html

from Hayabusa2 twitter - https://twitter.com/haya2e_jaxa/status/1342040309060915205 :

"The curation work for the Ryugu sample is steadily progressing. On December 21, sample catcher chambers B & C were opened and then the contents of chambers A & C were moved to the collection containers in the photo. The largest particles in chamber C are about 1 cm!"

"We have not yet confirmed the origin of the artificial object (人工物). A projectile was used during the sample collection and it is possible that this is aluminium separated from the sampler horn at that time."

my comments:
- thus the samples from the second touchdown were in chamber C, not B. Chamber B was empty (?)
- an "artificial object" (likely part of sampler horn) is indicated by an arrow in the second photo

additional photos from the press material - pdf, in Japanese -
http://www.hayabusa2.jaxa.jp/enjoy/materia...201224_ver7.pdf
(I enlarged and sharpened a little the last 5 photos)

A few slides from Professor Makoto Yoshikawa lecture at the Hamagin Space Science Center, December 26, 2020 - https://www.youtube.com/watch?v=ewMNStbw4yg...eature=youtu.be
(in Japanese, but a good drawing is worth more than 1,000 words )

slide 7 - comparison of samples from Hayabusa2 (Ryugu - return 2020) and Hayabusa (Itokawa - return 2010)
slide 9 - construction of return capsule and sample container
slide 10 - samples from chambers A and C and from the bottom of the container
slide 11 - sample from chamber A - from the first touchdown (February 22, 2019)
slide 12 - sample from chamber C - from the second touchdown (July 11, 2019)

"What do you hear?"
"Nothing but the rain."
The best of congratulations to JAXA for grabbing their guns and bringing in the cat.
Boom, BOOM, Boom!

Is there any information concerning the mass spectrum that was recorded on the gas emitted from the sample?
they mention a first measurement in Australia, few hours after the collection of the capsule, and a second measurement in sagamihara, before opening the sample canister.
they say both measurement gave similar information, and prove not to be terrestrial.

I wonder what was measured (mass range, mass resolution, isotopic sensitivity, ionization method...)
does anyone has info on the mass spectrum that was set-up in Woomera?

As far as I know:

1. Technique. The technique that was used to analyze the collected gas („the molecular and isotopic composition” - 1, 2) is Mass Spectrometry (MS).
[from Wikipedia: Mass spectrometry (MS) is an analytical techniques that is used to measures the mass-to-charge ratio of ions. The results are typically presented as a mass spectrum, a plot of intensity as a function of the mass-to-charge ratio...]

The official JAXA information is here - https://global.jaxa.jp/press/2020/12/20201215-2_e.html (and pdf - here)

I haven't found more detailed information anywhere.


2. Results. The only results of analysis reported so far are in the link above

„In early 2021, the first details of the analysis will trickle out.” - 3

I think we will not see detailed results until the first scientific article or scientific note is published. May I be wrong! After all, the community is hungry for these results, so maybe they will throw some "partial results" in the meantime (if they have a wow effect )

2. Results. The only results of analysis reported so far are in the link above

„In early 2021, the first details of the analysis will trickle out.” - 3

I think we will not see detailed results until the first scientific article or scientific note is published. May I be wrong! After all, the community is hungry for these results, so maybe they will throw some "partial results" in the meantime (if they have a wow effect )
[/quote]




LPSC is only 2 1/2 months away.

such a little curiosity from Hayabusa2 twitter:
„"Sound of Ryugu sample in the container". The sound of the Ryugu sample is the "sound of rattling like glass beads" that can be heard about the 4th second of the video. (The clicking sound is the sound of the metal seal parts moving)”

https://twitter.com/haya2_jaxa/status/1344645373256581120

I'm going to guess that someone with a forum name 'Orbitrap' (a type of mass spectrometer..) does not need an explanation ;-)

But yes, on your latter point, I would agree - sniffing organics from space is a top-shelf science result that demands careful consideration and peer review. There would be little to be gained by press-releasing any preliminary findings.

It appears that the main spacecraft has started firing its ion engines again for the extended mission.
I certainly hope they double-check the onboard computer for any integer overflow (we don't want to repeat Deep Impact's fate, after all !)

Of course, I am convinced that 'Orbitrap' does not need any further explanation about the mass spectrometry.

I just think it is possible that these posts are also read by people who, like me, are not as familiar with this analytical technique...

Usually, I also assume that it is better to provide two explanations and links too many than one too few. Just in case

It will be an interesting webinar: https://twitter.com/iyoumek/status/1344131849191358469

pdf materials from December 24, 2020 - English version - http://www.hayabusa2.jaxa.jp/enjoy/materia...24_ver7_en3.pdf

A new pdf from the press conference (February 4, 2021) has appeared on the Hayabusa2 website:
http://www.hayabusa2.jaxa.jp/en/enjoy/mate...04_ver5_en2.pdf


It contains the current status of the mission: sample testing (very briefly), the progress of an extended mission and several research results from the probe, including an article that appeared in Nature Astronomy: „Thermally altered subsurface material of asteroid (162173) Ryugu”: https://www.nature.com/articles/s41550-020-01271-2

While we wait for scientific results, a very nice video about public outreach:
https://www.youtube.com/watch?v=NLuf64TK6DA

For those interested in the ongoing research of the Ryugu samples, some useful (I think) link(s):

https://curation.isas.jaxa.jp/en/ - ASRG (Astromaterials Science Research Group) homepage - sample testing is underway here (I hope there will be some current news)

https://curation.isas.jaxa.jp/en/sample-curation/ryugu/ - detailed description of current and future sample testing process

https://curation.isas.jaxa.jp/en/sample-cur.../collaboration/ - international cooperation


Photo 1 and info from January 29, 2021: „...The picture shows the work that the samples in the clean chamber are being handled with a vacuum tweezer and stored into the designated container.” (https://curation.isas.jaxa.jp/en/topics/21-01-29.html)

Photo 2: Loop needle used to carry samples

Photo 3: A known picture of chamber A with samples, but in high resolution (https://s3-ap-northeast-1.amazonaws.com/jaxa-jda/http_root/photo/P100013138/a355b28bcd771d5bb3a57e68c3a6b8c3.jpg)

And a link to the JAXA Repository - https://jaxa.repo.nii.ac.jp/?action=pages_v...mp;lang=english
For example, there is now a complete catalog of Itokawa micro-samples (ver. 2020, 342 MB) - https://jaxa.repo.nii.ac.jp/index.php?actio...amp;block_id=21

Here is a short video of flying over the return capsule after it has landed - http://jda.jaxa.jp/result.php?lang=e&i...660b405af567b2a

Citations from two LPSC 52 abstracts:

S. Tachibana et al. HAYABUSA2 REENTRY CAPSULE RETRIEVAL AND SAMPLE CONTAINER OPENING OPERATIONS.
https://www.hou.usra.edu/meetings/lpsc2021/pdf/1289.pdf
[in Australia:]
."..The temperature monitor attached to the sample container indicated that the container was never heated up to 65°C, which is lower than the maximum daytime temperature at the Ryugu surface...
...The container was in vaccum, indicating the container seal held during reentry and therefore low terrestrial contamination. The gas extracted from the sample container was split into four gas tanks at room temperature, and the residual gas in the system was then trapped into two gas tanks cooled at liquid nitrogen temperature. A fraction of the gas was analyzed by a quadrupole mass spectrometer (WATMASS, Tokyo Electronics). The obtained mass spectrum was distinctly different from the terrestrial air, and the detailed analysis is still being performed for the gas stored in the tanks..."
[in Japan:]
"...Particles in the Sample Container: Initial description of the samples inside the sample container by the ISAS/JAXA curation found that the samples have the following characteristics:
(1) Particles were found in two separate chambers used for two landing operations at Ryugu, indicating that the samples at the different surface locations were obtained successfully.
(2) The particles were black in color, consistent with the color of Ryugu boulders.
(3) Millimeter- to centimeter-sized pebbles are present. Centimeter-sized grains, close to the maximum obtainable size, are found in the sample obtained during the second landing operation nearby the artificial crater.
(4) The total weight of the sample exceeds 5 g, which is far more than the mission requirement (0.1 g)..."

T. Yada et al. HANDLING AND DESCRIPTION OF C-TYPE ASTEROID RYUGU SAMPLES RETURNED BY HAYABUSA2.
https://www.hou.usra.edu/meetings/lpsc2021/pdf/2008.pdf
"...Particles smaller than 1 mm were also observed in chamber B as well...
...Future plan for sample distributions: The initial description of the Ryugu samples will last for 6 months after the return of the samples. The samples will be distributed to the initial analysis team of Hayabusa2 the phase2 curation teams that will make detailed analysis with a collaboration with ESCuC. One year later after the return, 10% of the samples will be delivered to NASA based on the Memorandum of Understanding between JAXA and NASA. Simultaneously, some fraction of samples will be distributed to overseas phase2 curation teams. JAXA will release the announcement of opportunity for the Hayabusa2 samples to the community with the sample catalog after 18 months from the return..."

An open access paper in Astronomy & Astrophysics:
Size of particles ejected from an artificial impact crater on asteroid 162173 Ryugu

PDF with Hayabusa2 news from March 5, 2021 (only in Japanese so far) - https://www.hayabusa2.jaxa.jp/enjoy/materia...210305_ver5.pdf
Includes: sample analysis status, rear heat shield inspection, mission status...

Pictures: rear heat shield and 3 Ryugu samples from chamber C (containers diameter: 21 mm)
Credit: JAXA

Edit: now in English - https://www.hayabusa2.jaxa.jp/en/enjoy/mate...05_ver5_en2.pdf

Planetary radio: a very interesting and informative conversation between Mat Kaplan and the Hayabusa2 Project Manager Yuichi Tsuda (about Hayabusa2 mission, sample testing, extended mission and the future MMX mission to Phobos) - https://www.planetary.org/planetary-radio/y...tsuda-hayabusa2

A few quotes from the interview:
- the artificial crater has a diameter of 18 m
- the curtain of debris reached a height of approx. 40 m
- the total of the samples weighs 5.4g
- chamber A contained samples from the 1st touchdown and C - from the second touchdown
- chamber B was opened between touchdown 1 and 2 - it turned out to contain very fine grains
- currently, a catalog of individual samples is being created (sizes from less than 1 mm to 1 cm)
- an analysis of the composition of this material will begin in early summer (including carbon and water content, organic compounds and hydrated minerals)
- more than 50% of the fuel remained on board the Hayabusa2

On JAXA Sagamihara Channel - https://www.youtube.com/channel/UCj5JPsqumx...1Dg?app=desktop :
„JAXA Sagamihara Campus Online Special Opening” (Day 2, March 27, 2021) - Visit with a camera in ESCuC - Extraterrestial Sample Curation Center -
https://www.youtube.com/watch?v=5E2XZG0ZjTg - from 4:08:45 to 4:23:40

For example, at 4:16:47 you can see the samples of Ryugu being picked up from chamber A with the "micro-catcher":
Credit: JAXA

a slightly larger animated gif

and one more

Some overdue news:

1. „Material from the Hayabusa2 press conference on Apr. 27th, including initial results obtained from spectroscopic measurements (FTIR and MicrOmega) of the sample from Ryugu. These early results indicate that the sample seems to consist of primitive material from the Solar System, containing water or carbon related minerals, indicating the existence of water in Ryugu’s parent body":
https://www.hayabusa2.jaxa.jp/en/enjoy/mate..._ver8_en_v3.pdf
https://curation.isas.jaxa.jp/en/topics/21-05-07.html
https://www.hayabusa2.jaxa.jp/en/enjoy/material/

2. „Anomalously porous boulders on (162173) Ryugu as primordial materials from its parent body”:
https://www.nature.com/articles/s41550-021-01371-7
https://www.hayabusa2.jaxa.jp/topics/20210602_Nature/
https://global.jaxa.jp/press/2021/05/20210525-1_e.html



"Figure 1: TIR images [a, b] and ONC images (c, d) of the discovered high porosity boulders (hot spot area is indicated in red). The images on the right are enlargements of those on the left, and in the ONC image (d), the boulders near the hot spot are outlined in white lines. These boulders may have a very high porosity (from ©Sakatani et al., 2021)."

New pdf material from Hayabusa2 press briefing of 17 June 2021 (in English) - https://www.hayabusa2.jaxa.jp/en/enjoy/mate...17_ver7_en3.pdf
- Report from the curation team
- Report from the initial analysis team

1. NASA Johnson Space Center in Houston, Texas, has completed the cleanroom for Hayabusa2 Ryugu samples:
https://www.hayabusa2.jaxa.jp/en/topics/20210730_CR/
https://curation.isas.jaxa.jp/en/topics/21-08-02.html

2. Images of the samples from Ryugu - a kind of summary: https://www.hayabusa2.jaxa.jp/en/topics/20201225_samples/

3. "Hayabusa2 Mission Update" (2021 Asteroid Day LIVE Digital from Luxembourg, with English transcription, May 2021): https://www.youtube.com/watch?v=AphsbNBP0no

4. August 4, 2021 - Operation status report (2021/7/12 - 2021/7/31) - Google translation:
„We continue to operate the ion engine. Currently, we are operating while checking the performance of which combination of two of the four ion engines is best to operate, and fine-tuning the set values such as voltage. In recent operations, the QCM (quartz crystal microbalance), which has been monitoring the state of contamination and wear on the ion engine mounting surface since its launch, has reached the end of its life and issued a command to stop the QCM operation (QCM, thank you for a long time. !). Every day I watch over the spacecraft through trial and error during operation to achieve the extended mission.
(Kana Hattori)” - https://www.hayabusa2.jaxa.jp/news/status/

Hello all. I'm Wesley Lamont and I've started doing some work on Ryugu for some researchers here at Curtin University and thought I would share it with all of you and ask for some advice and contacts.

Thanks to the animated GIF from Roman with the High resolution images at 6km I have created a higher resolution map of Ryugu I originally aligned to your map Roman but them moved it to the map from JAXA. The upper region of the higher resolution area isn't accurate as that should be stretched across the Norther Pole which isn't correct in my map. The core details align very well to the Shape File from the Small Bodies Measurement Tool. I'll post up a heavily compressed version. If anyone wants the raw image let me know and I can send that to you.

I'm not sure if this is good enough to publish but I thought the best person to ask would be Phil Stooke who I see you are active in this group (I don't know how or if I can tag people in a post here). I also created a map with the regions in prominent Craters highlighted but I'll have to post that separately.

Hmm attaching the image seemed to fail. I'm obviously doing something wrong which I can't quite work out.

I was going to post up the highlighted map but I'll wait until I can work out how to upload something in the post properly.

I have added my original map to the Shape File from SBMT which you can view here: Ryugu 3D Model

I'm keen to get access to other data to add to this:

• Colour Topography (Phil did you create this or did you get it from JAXA?)
• Thermal map in Cylindrical projection
• Gravity Map in Cylindrical projection

A third thing is creating my own reconstruction photogrammically from the raw images from the ONC-T camera (I presume that is the best camera). I presume there are more images than the set from Romans animated GIF at 6pm which could be used for a reconstruction.

Does anyone have contacts in JAXA who I could talk to about acquiring the raw data images to use? I'm hoping to make a better map and then create another Cylindrical map from that which is high detail and covers the entire asteroid.


In addition I have also create an Interactive version of Ryugu in an Asteroid Viewer app I'm developing with the ability to fade between maps and fade labels in and out with a scale bar. Eventually I'll plan to move that tool to be online and I'll post up a link here when that is finalised.

Thanks for any assistance

I should pass on a thankyou to everyone in this sub-forum as well. The amount of useful information in these pages has been fantastic

"...The largest particle that JAXA's spacecraft Hayabusa2 brought back from the asteroid Ryugu was over 10 mm in major diameter (other particles are mainly less than several mm in size), which was beyond even the expectations..." - https://curation.isas.jaxa.jp/en/topics/21-09-10.html (includes video)

"Some Ryugu samples were distributed to NASA on Nov. 30th. (...) Usui, Manager of ASRG, carried samples to the Johnson Space Center of NASA and passed them to curatorial staff." - https://curation.isas.jaxa.jp/en/topics/21-12-07.html

Edit:
https://www.nasa.gov/feature/nasa-receives-...mple-from-japan

Edit: some other samples of Ryugu currently outside of Japan:
at the Carnegie Earth and Planets Laboratory (EPL), USA - arrived in mid-August 2021
https://epl.carnegiescience.edu/news/ryugu-...s-arrive-campus (with picture)

at Brown University, USA - arrived at the end of September 2021
https://scitechdaily.com/asteroid-ryugu-sam...-close-up-look/ (with picture)

at Institut d'Astrophysique Spatiale (IAS), France - arrived in July 2021
https://www.ias.u-psud.fr/en/content/ias-an...-ryugu-asteroid (with picture)

at NASA - arrived in June 2021
https://www.nasa.gov/image-feature/a-sample...-asteroid-ryugu (with picture)

"You can currently see grains from asteroid Ryugu that were brought back by Hayabusa2 at the Miraiakan National Museum of Emerging Science and Innovation and at the Sagamihara City Museum" [both in Japan]
https://twitter.com/haya2e_jaxa/status/1467826224013934592
https://www.miraikan.jst.go.jp/en/news/gene...2111102216.html