Mission: Hayabusa 2 |
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Mission: Hayabusa 2 |
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 Nov 12 2018, 08:52 AM
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#661
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Press release (English PDF) from 8/nov press conference:
http://www.hayabusa2.jaxa.jp/enjoy/materia...08_ver6_en2.pdf During TD1-R3: LIDAR active down to 25m, then LRF. Synchronization to Ryugu speed, short "quick" descent before target release, target release at 12m altitude, ascent to 20 m, marker tracking , ascent back to 20000m. 2018/11/18-2018/11/29: Preparation period - On November 23, 2018, the spacecraft will be placed into the conjunction transition orbit. During this period, communications are not reliable due to Sun radio interference. 2018/11/30-2018/12/21: No trajectory control is performed, but communication with the spacecraft is still attempted. 2018/12/22-2019/01/01: Reversion period - Home Position Return control (HPR) maneuver will be performed on December 29, 2018 to return the spacecraft to the home position. * JAXA Space Exploration Innovation Hub unveils a simple version of the shape model. * The Hayabusa2 Science Team is developing a precise shape model for Ryugu. * Schedule for release with the publication of the associated paper. Downloadable here: http://www.ihub-tansa.jaxa.jp/ryugu_mokei.html Direct link: http://www.ihub-tansa.jaxa.jp/files/tansax..._mokei_2018.fbx Model based on low-res images from june 2018. · Number of vertices: 157,000 · Number of triangular patches : 52, 600 · File size: 4 MB, FBX Format · km unit  Selected landing site: L08-B http://www.planetary.org/multimedia/space-...nding-site.html Next press conferences scheduled for 6/dec, 13/dec |
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Dec 5 2018, 02:29 AM
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#662
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 Senior Member  Group: Members Posts: 2074 Joined: 13-February 10 From: Ontario Member No.: 5221 |
A post in the Osiris-REx thread reminded me: is there any reason Hayabysa 2 has stayed in basically an equatorial 'hover' for all this time, rather than going into a proper orbit like Osiris-Rex will after finishing imaging of the poles this month (which is also something Hayabusa 2 has not done)?
Why did the spacecraft go on a distant excursion away from Ryugu during solar conjunction, when they could have just spent that time in orbit. Surely there would be no danger of a collision after mapping out the gravity field! Or were they worried about accidentally going into the asteroid's shadow? |
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Dec 5 2018, 02:38 AM
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#663
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Solar System Cartographer Group: Members Posts: 10145 Joined: 5-April 05 From: Canada Member No.: 227 |
Probably more a matter of how confident they were that there would not be any problem during conjunction. Osiris-Rex doesn't have to worry about conjunction now, but they also might not want to stay in a low orbit for weeks without contact.
Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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Dec 25 2018, 10:41 PM
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#664
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Senior Member Group: Members Posts: 2074 Joined: 13-February 10 From: Ontario Member No.: 5221 |
Gravity strength map released: http://www.hayabusa2.jaxa.jp/en/topics/201..._AstroDynamics/
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Jan 8 2019, 10:36 AM
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#665
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Member Group: Members Posts: 817 Joined: 17-April 10 From: Kamakura, Japan Member No.: 5323 |
There was a very brief news on H2 landing on this evening's NHK TV. H2 is now scheduled to
make the first landing attempt during the week starting on 18 February. P |
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Jan 9 2019, 10:51 PM
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#666
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Senior Member Group: Members Posts: 2074 Joined: 13-February 10 From: Ontario Member No.: 5221 |
New map of many feature names, both IAU approved and colloquial ones from the team: https://twitter.com/haya2e_jaxa/status/1082952972181458944
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Jan 20 2019, 07:44 AM
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#667
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Solar System Cartographer Group: Members Posts: 10145 Joined: 5-April 05 From: Canada Member No.: 227 |
I have added those new names to my map. There is one missing character to be filled in on the ridge name when I figure it out (any Japanese-speaking help would be appreciated - message me please!). In the previous version of the map I had marked two target markers but I see now that there was only one, the second descent was for imaging - please correct me if I am wrong about that.
Phil
EDIT - a forum member (and spouse) was able to help me - thanks very much. So the missing character has been added at the end of the name of the equatorial ridge. I replaced the map file with the corrected version. -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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Jan 23 2019, 01:28 AM
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#668
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Member Group: Members Posts: 435 Joined: 14-December 15 Member No.: 7860 |
I found this https://twitter.com/CiteEspace/status/1047166709906493441
Does anyone know: are these photos of Otohime Saxum anywhere officially published?
Attached thumbnail(s)
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Jan 25 2019, 02:32 PM
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#669
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Member Group: Members Posts: 435 Joined: 14-December 15 Member No.: 7860 |
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Feb 7 2019, 02:18 AM
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#670
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Member Group: Members Posts: 817 Joined: 17-April 10 From: Kamakura, Japan Member No.: 5323 |
There was an article in this morning's newspaper here that H2 will go down for sampling at 08:00 on 22nd this month. Time, I think, is JST.
P |
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Feb 21 2019, 04:38 AM
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#671
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 Junior Member Group: Members Posts: 28 Joined: 17-November 05 From: Tokyo Member No.: 554 |
-------------------- my name means " Friend of Earth" , not your foe!
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Feb 21 2019, 04:42 AM
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#672
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 Merciless Robot Group: Admin Posts: 8783 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
Thank you, Foe. Good luck!!!
GO HAYABUSA 2!!! -------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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Feb 21 2019, 07:55 AM
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#673
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Newbie Group: Members Posts: 14 Joined: 30-September 14 Member No.: 7269 |
"Hayabusa2" Touchdown (TD1)（English）
https://www.youtube.com/watch?v=qeMwAdquDYM Live relay from JAXA Sagamihara Campus: Feb 22, 06:45~ JST |
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Feb 21 2019, 12:00 PM
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#674
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Member Group: Members Posts: 817 Joined: 17-April 10 From: Kamakura, Japan Member No.: 5323 |
https://www.youtube.com/watch?v=WkoVN_Bzkdo
this above is real timish, and not real, but it may be interesting to some people, jointly produced by JAXA and NHK. P |
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Feb 21 2019, 02:34 PM
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#675
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Member Group: Members Posts: 540 Joined: 17-November 05 From: Oklahoma Member No.: 557 |
The touchdown is scheduled for 23:25 UTC on the 21st (today). A small slip from the original 23:06.
That would be 6:25 pm EST and 2:25 pm PST. The full schedule of events is posted on the Hayabusa English site at this link. |
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