|
Chatroom |
|
| If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|||||||
| Register | FAQ | Members List | Calendar | Mark Forums Read |
 |
|
|
LinkBack | Thread Tools | Search this Thread | Display Modes |
22-February-2008, 11:59 PM
|
||||
|
||||
Asteroid 25143 Itokawa.
Below are some images I have been working on, the Asteroid 25143 Itokawa from the JAXA Hayabusa spacecraft.
1). 25143 Itokawa from Home Position. 2). Closer full view. 3). Giant boulder (possibly a small moon once). The remaining images are taken from VERY close to the surface of Asteroid 25143 Itokawa. Asteroid 25143 Itokawa may be only 535 x 294 metres x 209 metres in size, but shows some interesting lighting & shadow effects with the surface rocks & dust. It's quite amazing that this object can hold on to such loose stuff & the average desity of 1.95 g/cm3 seems to suggest that this object is a rubble pile held together by gravity. Andrew Brown.
__________________
"I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before". Linda Morabito on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979. 
|
|
23-February-2008, 02:32 AM
|
|||
|
|||
|
Nice work andrew.
i am ways amazed by the sorted appearence of part of the asteroid's surface. if this was a scene out of a SF movie I would have labelled it unrealistuc. Cheers Jon
|
|
23-February-2008, 02:33 PM
|
||||
|
||||
|
Thanks Jon.
The image with the Univ of Tokyo identifier did not need much, just increased the contrast slightly. The others, the originals on the JAXA site were quite flat, so they took quite a bit of work to bring out. I have put a few more on below. Once again, the image with the Univ of Tokyo identifier did not need much, just increased the contrast slightly. Andrew Brown.
__________________
"I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before". Linda Morabito on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.
|
|
24-February-2008, 04:44 AM
|
|||
|
|||
|
I'm surprised at how weathered the surface rocks look. There's just not many sharp fracture planes visible. I suppose low gravity collisons entail a lot of tumbling by the debris before it settles down again.
|
|
24-February-2008, 07:24 AM
|
|||
|
|||
|
Quote:
|
|
24-February-2008, 04:02 PM
|
|||
|
|||
|
Your point being?
Looks to me like there's at least two major solid bodies in there. It's also not immediately obvious how a low-G body of gravel would respond to collisions. On earth, you get a pretty inelastic collision when you toss a rock at a pile of pebbles. The smoothed faces on the rocks of 25143 might imply a more dynamic collision aftermath. BTW, great images, 3488!
|
|
24-February-2008, 08:51 PM
|
||||
|
||||
|
Cool stuff!
__________________
I want to go back to the moon. I don't care which rocket you use, whichever one you pick, I'll like it, I swear. "If you think the LHC will create black holes, you might as well believe Hobbits are at the bottom of your garden."- Dr. Mike Inglis Rovers forever! - ToSeek
|
|
| Thread Tools | Search this Thread |
| Display Modes | |
|
|
Similar Threads
|
||||
| Thread | Thread Starter | Forum | Replies | Last Post |
| The ULTIMATE astronomy quiz | Glom | Astronomy | 4699 | 01-September-2009 05:12 AM |
| Is 1 Ceres still an Asteroid? (Wiki & IAU) | kheider | Astronomy | 28 | 15-October-2006 10:14 AM |
| “Armageddon” or Not? | thomastech | Astronomy | 27 | 23-November-2003 09:55 PM |
Linear Mode
