Hayabusa - JAXA asteroid rendezvous and sample return

Palomar · 2005-12-12 13:45:27

and we don't yet know that it did not successfully collect a sample.
I will cross my fingers and wait.

*Me too.

An update:

http://www.spaceref.com/news/viewsr.html?pid=18947

On Dec. 6 Hayabusa was 550 km from Itokawa and (gulp) 290 million km from Earth. It's traveling at aprox 5 km per hour.

Still grappling with a slew of issues. A bit of good news: "on Nov. 29, a beacon line through a low gain antenna was restored."

Attempts to restart the ion engine.

xfingers crossedx

--Cindy

SpaceNut · 2005-12-14 07:17:05

Asteroid probe's return delayed by 3 years

JAXA said it had lost control of the direction of the probe due to a fuel leak after the landing, forcing it to delay a plan for Hayabusa to approach Earth and drop a capsule containing the samples into the Australian outback in June 2007.
The return has been put back until June 2010, JAXA said on its Web site.

Palomar · 2005-12-15 06:37:33

Asteroid probe's return delayed by 3 years

*...or possibly forever?

Check the headline

:shock:

Wow. Such a pessimistic headline. Is it warranted?

"...we'll spend the coming year to rescue the craft and retrieve it in June 2010 if we can control it again by the beginning of 2007..."

The man quoted says there is a "good possibility" Hayabusa can be controlled again. I sure hope so.

Article also mentions Japan's rivalry with China.

--Cindy

SpaceNut · 2005-12-15 14:25:36

It appears that the window for return has been missed and will not be tried again for at least 2 years from now for the probe to begin its journey home.

Rxke · 2005-12-16 08:19:38

update:
http://www.spacedaily.com/news/asteroid-05zl.html

clearly translated by the same guys that write those cheap manuals for consumergoods, heh.

But AFAIK, they're still mildly optimistic, seems like they have some automatic emergency-backup system of sorts, so that even when the probe itself is out of comms range, the controlmechanism automatically restarts and does some orbital corrections etc...

At least it looks like they were able to purge the leaking gascontainer that made the probe spin out of control, so now the ion engine should be able to take over...

Rxke · 2005-12-16 08:27:24

courtesy JAXA

so at the end of 2006, probability to resume communication is above 60%

SpaceNut · 2006-03-07 18:14:19

Japan Contacts Asteroid Probe

The Japan Aerospace Exploration Agency said it had established sufficient contact with the Hayabusa probe to assess its condition and position.
JAXA has been gradually restoring communications with Hayabusa since January, after a thruster malfunction the previous month put the probe into a spin that caused a break in contact, the agency said in a statement.
The agency plans to use solar batteries to charge up an ion engine in order to control the probe's attitude and keep it properly oriented to maintain communications with Earth, but contact could be lost again if the operation fails, it said.

Rxke · 2006-03-08 01:40:11

Wow, now that's great news!

It ain't over 'till the fat lady sings!

SpaceNut · 2007-02-12 09:33:37

Hayabusa may come home if controllers can safely fire the craft's ion engines.

Asteroid sampler spacecraft could attempt trip home

At least two of Hayabusa's four ion engines are required for the journey, and engineers last tested the propulsion system in May 2006
Officials still don't know if bits of rock and dust are housed inside a protective chamber designed to plummet through Earth's atmosphere to a parachuted landing, but that is not stopping teams from trying to bring the craft home safely.

John Creighton · 2007-02-19 13:10:00

Awsome! I forget did they get a good sample?

Rxke · 2007-02-19 13:14:07

They don't know for sure...

cIclops · 2007-04-25 03:39:04

Public release of the Hayabusa data archives

3-dimensional movie of shape model (11MB mov file) - outstanding movie!

cIclops · 2008-02-01 04:07:02

Finished First Leg of Orbit Maneuver toward Earth - 29 Oct 2007

Hayabusa asteroid explorer had been executing the powered flight toward Earth using a single reaction wheel and the microwave discharge ion engines since April this year. The achievement of the first leg of orbit maneuver around the perihelion led Hayabusa into turning off them and shifting the spin mode from three-axis attitude stabilization on October 24, 2007 according to the plan. The ion engines generated 1,700 m/s delta-V with 31,000 hours in total accumulated operational time up to now and still keep good thrust performance and enough propellant.
Hayabusa will fly in ballistic manner with the spin axis tracking toward Sun by the solar pressure torque without any propellant consumption. And it will resume the orbit maneuver in the second leg from February 2009 aiming for Earth return on June 2010. The remaining delta-V toward Earth is only 400m/s.
Hitoshi Kuninaka

Slowly but surely ...

SpaceNut · 2008-04-17 06:20:56

The little probe that could...Hayabusa was meant to collect samples by firing pellets into the surface of the asteroid Itokawa and scooping up the resulting debris.

Hayabusa asteroid probe may never return to Earth

Even though Japan's problem-plagued Hayabusa spacecraft is now on its return trip to Earth, it might never complete the journey. A catastrophic failure of its last remaining reaction wheel, which helps point the craft, might prevent it from reaching the Earth to drop a capsule into the atmosphere, mission members say.
Hayabusa was meant to collect samples from the asteroid Itokawa by firing pellets into the surface of the 535-metre-long rock and scooping up the resulting debris. But data from two landings in November 2005 suggest the pellets never fired because the craft's onboard computer sent conflicting signals to its collection instruments.

noosfractal · 2008-04-17 12:30:21

Talk about Murphy's law. It really highlights how impressive achievements like the Mars rovers are.

3488 · 2008-04-17 15:51:44

That's true, but lets not forget what Hayabusa HAS achieved.

A thorough on site & close up examination of the tiny 535 metres × 294 metres × 209 metres sized Asteroid 25143 Itokawa.

Asteroid 25143 Itokawa.

Asteroid 25143 Itokawa seen from one end.

Asteroid 25143 Itokawa seen from the other end.

Asteroid 25143 Itokawa, showing a giant boulder on the end. Perhaps a small moon once??

Boulders & rocks on the limb of Asteroid 25143 Itokawa.

25143 Itokawa from very close to the surface.

Another very close view of 25143 Itokawa.

A very close view of 25143 Itokawa.

A very close view of 25143 Itokawa showing a grainy surface.

Andrew Brown.

cIclops · 2008-04-18 02:18:12

Many thanks for posting those images. That's a strange looking object! At the time Hayabusa was exploring Itokawa JAXA only released low resolution images.

3488 · 2008-04-18 14:44:49

Many thanks for posting those images. That's a strange looking object! At the time Hayabusa was exploring Itokawa JAXA only released low resolution images.

You are very welcome cIclops.

Yes I noticed that too, during the primary mission, only the low resolution images were released.

Another nice view of the Asteroid 25143 Itokawa.

25143 Itokawa, a closer view of the giant boulder. Possibly once a small moon??

A view of the 'waist' of 25143 Itokawa.

A view of 25143 Itokawa from an unusual viewpoint.

A view towards the horizon of 25143 Itokawa.

Andrew Brown.

Vincent · 2008-04-18 16:07:55

Nice images guys, are they true color? Just kidding.

I was wondering about the amount of gravity on an object like that. Anybody know?

Vincent

3488 · 2008-04-18 16:49:02

Hi Vincent.

25143 Itokawa surface gravity: 0.0001 ms/2.
Earth surface gravity: 9.7803 ms/2.

0.0001 / 9.7803 = 1/102,246. So Earth's surface gravity is approx 102,246 times stronger that of 25143 Itokawa's.

Earth escape velocity: 11.186 KPS or 40,269 KPH.
25143 Itokawa escape velocity: 0.0002 KPS or 0.72 KPH.

So in other words, a landing on 25143 Itokawa, would be more like a docking.

Hope that helps.

Andrew Brown.

Vincent · 2008-04-18 17:18:17

That’s a big 10-4, 3488

Well, may have been a little vague, just kidding.

Thanks,
Vincent

SpaceNut · 2020-12-05 14:52:26

Not sure if there is a second topic but asteroid mission is set to return to eart this month

tahanson43206 · 2020-12-05 15:10:53

For SpaceNut re #72

Apparently the capsule is back on the ground, after creating a fireball visible from the ISS.

Whether it landed safely is unknown as of the latest report, but the location is known and teams will be there at first light in Australia.

Meanwhile, the probe itself is heading out for another 10 year voyage to visit another asteroid.

That is a remarkable achievement by the Japanese up to this point.

(th)

GW Johnson · 2020-12-06 13:28:58

Last thing I saw said they had successfully recovered it. It'll likely be quite a while before we hear anything substantive about what it contains (or not). They take their time with stuff like that, and with reporting about it.

GW

Mars_B4_Moon · 2022-06-06 12:45:23

Amino acids found in asteroid samples collected by Hayabusa2 probe
https://english.kyodonews.net/news/2022 … probe.html

Amino acids found in asteroid samples
https://www.japantimes.co.jp/news/2022/ … sa2-probe/
The acids discovered are very important substances for living things

‘Building blocks of life’ found in soil taken from asteroid Ryugu
https://www.asahi.com/ajw/articles/14638613

Researchers have found more than 20 different amino acids, the building blocks of life, in soil samples Japan’s Hayabusa 2 space probe brought back from the asteroid Ryugu, according to sources.
The findings will likely help support the theory that the origin of life on Earth came from outer space.

Amino acids found in asteroid samples collected by Hayabusa-II probe
https://mainichi.jp/english/articles/20 … sc/030000c

Last edited by Mars_B4_Moon (2022-06-06 17:15:57)

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#51 2005-12-12 13:45:27

Re: Hayabusa - JAXA asteroid rendezvous and sample return

#52 2005-12-14 07:17:05

Re: Hayabusa - JAXA asteroid rendezvous and sample return

#53 2005-12-15 06:37:33

Re: Hayabusa - JAXA asteroid rendezvous and sample return

#54 2005-12-15 14:25:36

Re: Hayabusa - JAXA asteroid rendezvous and sample return

#55 2005-12-16 08:19:38

Re: Hayabusa - JAXA asteroid rendezvous and sample return

#56 2005-12-16 08:27:24

Re: Hayabusa - JAXA asteroid rendezvous and sample return

#57 2006-03-07 18:14:19

Re: Hayabusa - JAXA asteroid rendezvous and sample return

#58 2006-03-08 01:40:11

Re: Hayabusa - JAXA asteroid rendezvous and sample return

#59 2007-02-12 09:33:37

Re: Hayabusa - JAXA asteroid rendezvous and sample return

#60 2007-02-19 13:10:00

Re: Hayabusa - JAXA asteroid rendezvous and sample return

#61 2007-02-19 13:14:07

Re: Hayabusa - JAXA asteroid rendezvous and sample return

#62 2007-04-25 03:39:04

Re: Hayabusa - JAXA asteroid rendezvous and sample return

#63 2008-02-01 04:07:02

Re: Hayabusa - JAXA asteroid rendezvous and sample return

#64 2008-04-17 06:20:56

Re: Hayabusa - JAXA asteroid rendezvous and sample return

#65 2008-04-17 12:30:21

Re: Hayabusa - JAXA asteroid rendezvous and sample return

#66 2008-04-17 15:51:44

Re: Hayabusa - JAXA asteroid rendezvous and sample return

#67 2008-04-18 02:18:12

Re: Hayabusa - JAXA asteroid rendezvous and sample return

#68 2008-04-18 14:44:49

Re: Hayabusa - JAXA asteroid rendezvous and sample return

#69 2008-04-18 16:07:55

Re: Hayabusa - JAXA asteroid rendezvous and sample return

#70 2008-04-18 16:49:02

Re: Hayabusa - JAXA asteroid rendezvous and sample return

#71 2008-04-18 17:18:17

Re: Hayabusa - JAXA asteroid rendezvous and sample return

#72 2020-12-05 14:52:26

Re: Hayabusa - JAXA asteroid rendezvous and sample return

#73 2020-12-05 15:10:53

Re: Hayabusa - JAXA asteroid rendezvous and sample return

#74 2020-12-06 13:28:58

Re: Hayabusa - JAXA asteroid rendezvous and sample return

#75 2022-06-06 12:45:23

Re: Hayabusa - JAXA asteroid rendezvous and sample return

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