HAYABUSA mission

badprof · #1 (**permalink**) 27-January-2005, 05:49 PM

Hi all,

Anyone know much about how this mission is going? It is due to rendevous with the asteroid Itokawa (1998SF36) sometime in the next few months, however the JAXA website has very little information on how it is going.

Regards,

Maurice

http://www.isas.ac.jp/e/enterp/missi...scenario.shtml

ToSeek · #2 (**permalink**) 27-January-2005, 06:25 PM

Going strong as of December 30.

Christopher Ferro · #3 (**permalink**) 27-January-2005, 07:13 PM

From the page ToSeek linked to:

Quote:

Originally Posted by A Weirdly Translated Page

The telemetry bit rate is also gradually falling, so that the operation team feels helpless.

Um, going strong, but is it going well?

CJSF

ToSeek · #4 (**permalink**) 27-January-2005, 07:30 PM

Quote:

Originally Posted by Christopher Ferro

From the page ToSeek linked to:

Quote:

Originally Posted by A Weirdly Translated Page

The telemetry bit rate is also gradually falling, so that the operation team feels helpless.

Um, going strong, but is it going well?

CJSF

That could just be a distance effect. It's hard to tell if that's an actual problem or not.

01101001 · #5 (**permalink**) 08-July-2005, 09:09 AM

JAXA: Today's Hayabusa

Last update July 7, 2005:

Quote:

Distance from Earth : 366,895,884km
Distance from Itokawa : 143,098km

NASA: Current Missions to Asteroids: Hayabusa:

Quote:

Oct 2005: Arrival at Asteroid Itokawa
Jun 2007: Sample Return to Earth
Status: En Route to Asteroid Itokawa

MSNBC/Oberg, June 7, 2005 article: Japan shoots for a piece of an asteroid

Quote:

Hayabusa is approaching at a relative speed of 225 mph (100 meters per second) and is firing its gentle but exceedingly persistent engine to further slow its speed. [...] The probe is now expected to arrive at its "home station" stand-off position early in September.

Jens · #6 (**permalink**) 08-July-2005, 09:35 AM

Quote:

Originally Posted by Christopher Ferro

From the page ToSeek linked to:

Quote:

Originally Posted by A Weirdly Translated Page

The telemetry bit rate is also gradually falling, so that the operation team feels helpless.

Um, going strong, but is it going well?

CJSF

I don't know, I read through the page in Japanese, and there was nothing there to indicate any problem. The only thing that seems possibly to connect to this is that apparently at some stage the craft will begin to do auto-guidance or something like that. Who know, maybe that was what they were referring to. But from the Japanese content, it seems clear that everything is going well. Apparently they had a meeting in June with American experts to exchange information and plans.

01101001 · #7 (**permalink**) 24-July-2005, 09:05 AM

Less than 100 thousand km.

JAXA: Today's Hayabusa

Last update 2005/07/21:

Quote:

Distance from Earth : 359,017,902km
Distance from Itokawa : 97,614km

01101001 · #8 (**permalink**) 02-August-2005, 03:14 PM

Out of conjuction with Sun and resumed normal operations.

JAXA: Today's Hayabusa

Last update 2005/08/01

Quote:

Distance from Earth : 351,748,780km
Distance from Itokawa : 63,080km

01101001 · #9 (**permalink**) 09-August-2005, 10:38 PM

JAXA: Today's Hayabusa

Last update 2005/08/17

Quote:

Distance from Earth : 340,226,152km
Distance from Itokawa : 20,199km

Quote:

Hayabusa performed the Star Tracker imaging of Itokawa on July 29-30, August 8-9 and August 12. Totally, 24 images were taken and the hybrid navigation combining both radio and optical measurement was performed and the results came out enough well to guide the spacecraft making a final approach to the object.

01101001 · #10 (**permalink**) 22-August-2005, 05:37 AM

JAXA: Today's Hayabusa

Last update 2005/08/22

Quote:

Distance from Earth : 336,512,020km
Distance from Itokawa : 11,320km

#11 (**permalink**) 22-August-2005, 11:14 AM

Quote:

Originally Posted by 01101001

JAXA: Today's Hayabusa

Last update 2005/08/22

Quote:

Distance from Earth : 336,512,020km
Distance from Itokawa : 11,320km

More info at
http://www.hayabusa.isas.jaxa.jp/e/index.html

The plan is to become stationary wrt Itokawa in mid September.

ToSeek · #12 (**permalink**) 23-August-2005, 06:12 PM

Ambitious mission hopes to return bits of asteroid

Quote:

Slowly pulling alongside a space rock the size of several typical city blocks, a Japanese probe is preparing to begin scooping the first dusty samples of material from the surface of an asteroid this fall for an eventual return to Earth.

Japan's Hayabusa spacecraft is halfway through a four-year $100 million mission to chase down a small celestial target, retrieve pieces of its rocky crust, and return them safely to Earth in a capsule designed to survive the intense heat as it enters the atmosphere and parachutes to a safe landing.

01101001 · #13 (**permalink**) 29-August-2005, 07:25 AM

JAXA: Today's Hayabusa

Last update 2005/08/29

Quote:

Distance from Earth : 331,178,810km
Distance from Itokawa : 4,040km

Quote:

The orbit maneuver of HAYABUSA spacecraft was handed over from the ion engines to the bi-propellant thrusters on August 28 JST.

Accomplishment of HAYABUSA’s outward journey by ion engines

Quote:

At the end of August HAYABUSA stays 4,800km (3,000 mi.) apart from Asteroid ITOKAWA and is still closing it at 32km/h (20 mph) velocity with the ion engines off. HAYABUSA asteroid explorer, launched on May 9 2003, has executed the orbit maneuver using the microwave discharge ion engines, which established 25,800 hours the total numbers of space operational time to generate 1,400m/s delta-V with 22kg (49 lb) xenon propellant.
One of four engines marked the accumulated operational time 10,400 hours.

01101001 · #14 (**permalink**) 02-September-2005, 08:46 AM

JAXA: Today's Hayabusa

I can't really tell what's going on, news-wise. The English page seems to have slipped into Japanese. I can read the distances, though.

Last update 2005/09/02

Quote:

Distance from Earth 327,240,550km
Distance from Itokawa 1,550km

The parent page, Hayabusa Mission Page, is still OK.

JohnD · #15 (**permalink**) 02-September-2005, 01:21 PM

All,
As an aside, why was this mission named "Hayabusa"? The same word is used for a Yamaha motorbike, and that is alleged to be so named after the japanese for "Peregrine Falcon". Good name for a powerful bike, so for an ion drive probe?
John

01101001 · #16 (**permalink**) 02-September-2005, 04:45 PM

Quote:

Originally Posted by JohnD

All,
As an aside, why was this mission named "Hayabusa"? The same word is used for a Yamaha motorbike, and that is alleged to be so named after the japanese for "Peregrine Falcon". Good name for a powerful bike, so for an ion drive probe?
John

Because it will swoop down and take a sample.

SpaceDaily: Hayabusa Aims For Asteroid Sample Return

Quote:

When it finally launched, the MUSES-C spacecraft was named Hayabusa - "Peregrine Falcon." This bird of prey is known for its ability to swoop down and snatch up its prey in its talons - a maneuver that some see as similar to the plans for Hayabusa, to seize samples of the asteroid's surface.

JohnD · #17 (**permalink**) 02-September-2005, 09:06 PM

Nice one, 105!
John

tbm · #18 (**permalink**) 03-September-2005, 12:32 AM

Greetings!

A little known fact is that this is a manned mission. After all, look at the spacecraft here: http://www.nzfpm.co.nz/former/ki43i.htm

See?

Regards, tbm

01101001 · #19 (**permalink**) 03-September-2005, 12:42 AM

Quote:

Originally Posted by tbm

A little known fact is that this is a manned mission. After all, look at the spacecraft here: http://www.nzfpm.co.nz/former/ki43i.htm

That's no man in the Hayabusa. It's one of those Japanese androids.

MrObvious · #20 (**permalink**) 03-September-2005, 10:39 AM

Quote:

Originally Posted by JohnD

All,
As an aside, why was this mission named "Hayabusa"? The same word is used for a Yamaha motorbike, and that is alleged to be so named after the japanese for "Peregrine Falcon". Good name for a powerful bike, so for an ion drive probe?
John

Actually its a Suzuki not a Yamaha. The closest thing from Yamaha is the R1. Both are really