Mission: Hayabusa 2 Options

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JAXA wants to continue with Hayabusa 2. However there is/was a huge fight about the budget. Main problem was the budget for the launch vehicle. 2 months ago or so there was a report which said, that JAXA had to find another launch vehicle or the project gets cancelled. Now the Italian space agency played saviour and overed the VEGA. So finally we might see another Hayabusa in 2011.


It was mentioned here:
http://www.jspec.jaxa.jp/080110Final_IPEWG-ProgramBook.pdf

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Is the landing gear supposed to deploy THIS early? Thought it was going to spend some time in orbit surveying the asteroid before attempting to touch down.

[Guest_mcmcmc_*]

Is the landing gear supposed to deploy THIS early? Thought it was going to spend some time in orbit surveying the asteroid before attempting to touch down.

Landing gear?
There is no landing gear, neither on Hayabusa nor in the rovers:
http://www.asahi.com/special/rocket/hayabusa2_3d/

Downloadable model: http://win98.altervista.org/hayabusa2/hayabusa2-original.zip

"Rovers" are just "rollers": boxes with internal "misbalanced weight", moved to change center of mass and make the rovers move/roll around.

Updated status:

6800 km to go
20 m/s
1898 s roundtrip communication time

24 May (144km/h): 16/11/18/10/15/13/19/8/9/9/7/8
25 May (144km/h): 16/11/18/10/15/13/19/8/9/9/7/8
26 May (108km/h): 16/11/18/10/15/13/19/8/9/9/7/8
27 May (108km/h): 16/11/18/10/15/13/19/8/9/9/7/8

Where do you get historical data?

[pandaneko]

Where do you get historical data?

The data comes from Haya2 web page.

http://haya2now.jp/ Haya2NOW

The 12 (rounded) numbers are for 12 thrusters, 1 to 12 from left to right. The table on Haya2 is difficult to read when one or two thrusters
are used. That is why I wanted to line them up for easy detection of changes.

However, once chemical engines are used this table will become useless. It is ony meant for early detection of the use of chemical
thrusters. I am keeping a log and hope that I will be able to detect the onset of very final approach.

P

[pandaneko]

From the fact sheet of JAXA we know that they will start using chemical thrusters on 5 June at the 2500km point and that must
mean that cameras will be facing Ryugu.

Although the camera with Haya2 web page is a wide angle camera I think they will use the telephoto camera when Hayabusa 2
reaches 2500km point. From the specs of the telephoto camera my estimate is that Ryugu will be only about 10 pixels altogether.

It is not much, still only a dot size, is it not? I want to see a bigger picture!!!

P

[pandaneko]

As at 12:00 on 4 June JST Hayabusa 2 web page carries a note which says:

Data is being swapped

This is the best translation I can think of.

P

[pandaneko]

Thank you, Paolo. I opened up Japanese web pages, just about everywhere. There are lots and
lots of congratulatory remarks, but no important information on flight operation itself. In the
meantime, my little matrix is looking like (its usefulness is now over),

31 May ( 72km/h): 16/11/18/10/15/13/19/8/9/9/7/8
1 June ( 36km/h): 16/11/18/10/15/13/19/8/9/9/7/8
2 June ( 36km/h): 16/11/18/10/15/13/19/8/9/9/7/8
3 June ( 36km/h): 16/11/18/10/15/13/19/8/9/9/7/8
4 June ( ?km/h): 16/11/18/10/15/13/19/8/9/9/7/8

I did not know they stopped ion engines as early as 3 June, so Hayabusa 2 must be coasting at
36km/h now. They can now turn the satellite so that we can look into the right direction.

I wonder how soon theywill do it for us.

P