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What's Up With Hayabusa? (fka Muses-c) |
 Sep 29 2005, 02:19 PM
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#271
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Founder  Group: Chairman Posts: 14445 Joined: 8-February 04 Member No.: 1  |
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Sep 29 2005, 02:28 PM
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#272
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 Senior Member Group: Members Posts: 2454 Joined: 8-July 05 From: NGC 5907 Member No.: 430 |
QUOTE (Toma B @ Sep 29 2005, 03:18 AM) Now only 10 km away... But stil no new images... AAAARRRGGGGHHH!!!!!   They seem to be following ESA's lead with Huygens.  The most amazing explorations happening these days, complete with pictures, and the media and space agencies are flubbuing the publicity. -------------------- "After having some business dealings with men, I am occasionally chagrined,
and feel as if I had done some wrong, and it is hard to forget the ugly circumstance. I see that such intercourse long continued would make one thoroughly prosaic, hard, and coarse. But the longest intercourse with Nature, though in her rudest moods, does not thus harden and make coarse. A hard, sensible man whom we liken to a rock is indeed much harder than a rock. From hard, coarse, insensible men with whom I have no sympathy, I go to commune with the rocks, whose hearts are comparatively soft." - Henry David Thoreau, November 15, 1853 |
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Sep 29 2005, 02:38 PM
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#273
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 Member Group: Members Posts: 510 Joined: 17-March 05 From: Southeast Michigan Member No.: 209 |
To be fair, they may not be taking that many images as they bump closer, and the detail level may not be that much better.
I do agree that every mission should have a "raw images" page from now on - MER set the benchmark for that. But I'm going to cut JAXA some slack, they've had a rough go of it over the last few years, and if they want to concentrate their resources on executing the mission, that's fine with me. As long as they do throw us a bone every now and then 
-------------------- --O'Dave
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Sep 29 2005, 02:50 PM
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#274
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 Member Group: Members Posts: 563 Joined: 29-March 05 Member No.: 221 |
QUOTE (ljk4-1 @ Sep 29 2005, 03:28 PM) The most amazing explorations happening these days, complete with pictures, and the media and space agencies are flubbuing the publicity. Obligatory BBC article. |
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Sep 29 2005, 02:54 PM
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#275
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 Senior Member Group: Members Posts: 1887 Joined: 20-November 04 From: Iowa Member No.: 110 |
from the BBC article
"Hayabusa has been collecting spectral data and images of Itokawa from its "gate" position, about 20km (12 miles) from the asteroid. Over the next few days, the probe will move into its "home" position, just 7km (4.3 miles) from the asteroid. " I expect we will see a new batch of images after it reaches the 'home' position. |
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Sep 29 2005, 04:47 PM
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#276
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 Member Group: Members Posts: 648 Joined: 9-May 05 From: Subotica Member No.: 384 |
QUOTE (odave @ Sep 29 2005, 05:38 PM) .... and if they want to concentrate their resources on executing the mission, that's fine with me. As long as they do throw us a bone every now and then That's allright with me to , but if they can't update their web site with new images every once in a while......arghhh that is not posible.... They threw us last NEW bone 14 days ago!!! I'm starving...
-------------------- The scientist does not study nature because it is useful; he studies it because he delights in it, and he delights in it because it is beautiful.
Jules H. Poincare My "Astrophotos" gallery on flickr... |
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Sep 29 2005, 08:05 PM
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#277
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Senior Member Group: Members Posts: 1636 Joined: 9-May 05 From: Lima, Peru Member No.: 385 |
The Hayabusa space program is very slow and long that takes months. We are going to have to wait until November to know any exihilarating news with the landings and hoppings on the Itokawa asteroide. So be ready to wait for such a long time.
I think that the Hayabusa team has not hurry to perform all thing fast on Itokawa since they have to wait for the best date for the home Earth return that would be on December 2005.  Rodolfo |
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Sep 29 2005, 11:50 PM
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#278
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 Member Group: Members Posts: 378 Joined: 21-April 05 From: Portugal Member No.: 347 |
Can the probe navigate and take images at the same time ?
 Perhaps it has to point away from the asteroid to slow down... -------------------- _______________________
www.astrosurf.com/nunes |
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Sep 30 2005, 02:42 AM
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#279
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 Interplanetary Dumpster Diver Group: Admin Posts: 4405 Joined: 17-February 04 From: Powell, TN Member No.: 33 |
That is a good point...we don't even know if it is taking pictures during the approach. And they have been good about releasing stuff from the first position. I think it is a shame that after years of having to wait months to see a few scraps in Sky and Telescope and Astronomy, there is the need to complain when something just takes a few days.
-------------------- |
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Sep 30 2005, 06:19 AM
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#280
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 Senior Member Group: Members Posts: 2492 Joined: 15-January 05 From: center Italy Member No.: 150 |
Finally some info, not a real "update"!
Station keeping history Based on plots, Hayabusa reached a minimum distance of 15Km on Sep,19 (however, now should be closer)... "The next web report will introduce how Hayabusa lowers its altitude and reach the Home Position" -------------------- I always think before posting! - Marco -
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Sep 30 2005, 01:43 PM
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#281
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Senior Member Group: Members Posts: 1636 Joined: 9-May 05 From: Lima, Peru Member No.: 385 |
QUOTE (dilo @ Sep 30 2005, 01:19 AM) Finally some info, not a real "update"! Station keeping history Based on plots, Hayabusa reached a minimum distance of 15Km on Sep,19 (however, now should be closer)... "The next web report will introduce how Hayabusa lowers its altitude and reach the Home Position" According to the above report, it looks that it is almost impossible to remain fixed at a distance from Itokawa. This report shows a graphic about the position of Hayabusa in almost every day which varies. The Hayabusa teams is trying to control it by learning the controls adjustments. So, it is nothing easy. Lucks for Hayabusa's team Rodolfo |
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Sep 30 2005, 01:49 PM
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#282
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Founder Group: Chairman Posts: 14445 Joined: 8-February 04 Member No.: 1 |
You can see that they needed several burns to station keep at 20km, as I suggested it would. It'll just get worse the lower they get
 With NEAR at Eros, it was a lumpy and bumpy orbit, but you COULD actually orbit it - Hayabusa is just that bit too small to do so I guess. Doug |
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Sep 30 2005, 02:18 PM
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#283
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Senior Member Group: Members Posts: 1636 Joined: 9-May 05 From: Lima, Peru Member No.: 385 |
QUOTE (djellison @ Sep 30 2005, 08:49 AM) You can see that they needed several burns to station keep at 20km, as I suggested it would. It'll just get worse the lower they get With NEAR at Eros, it was a lumpy and bumpy orbit, but you COULD actually orbit it - Hayabusa is just that bit too small to do so I guess. Doug Doug, Aja! Yes, I now realice about why the Hayabusa's team has selected the home position such a long distance from Itokawa. It is due that what you have told previously. The long distance is saving the propulsion fuel by minimizing the altitude adjustments. Rodolfo |
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Oct 1 2005, 06:29 PM
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#284
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 Senior Member Group: Members Posts: 3652 Joined: 1-October 05 From: Croatia Member No.: 523 |
QUOTE (Toma B @ Sep 29 2005, 06:47 PM) That's allright with me to , but if they can't update their web site with new images every once in a while......arghhh that is not posible.... They threw us last NEW bone 14 days ago!!! Boy, some folks really are spoiled. The spacecraft team obviously has many better things to do than constantly taking pictures of the asteroid. It's not like it's changing its appearance every second or anything. Maintaining the "gate position" is a feat by itself, even a residual speed of 1 cm/s would add up to 860 meters over a course of one day. The team really has to control the spacecraft very often. Slow science is better than NO science if anything goes wrong. On a side note, some of you guys really are coming down too hard on ESA, concerning its policy with the Huygens images. While it's true the initial 3 images were presented horribly, they did release the raw images very fast. They also intend to archive the data at NASA's PDS system, after the proprietary one-year period has passed... -------------------- |
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Oct 1 2005, 07:57 PM
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#285
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 Member Group: Members Posts: 356 Joined: 12-March 05 Member No.: 190 |
Well to be fair though they released the images to the DISIR team immediately. They then released them to us.
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