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#40 by mcgyver on 19 Jun, 2018 06:32
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Next dates:
20/6: TCM06
22/6: TCM07
24/6: TCM08
26/6: TCM09
27/6: Arrival maneuvre
Next press releases:
27/6 (arrival at 20 km)
19/7 (5 km)
2/8 (1 km)
23/8
Source: latest press conference -
#41 by yoichi on 19 Jun, 2018 06:47
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http://www.hayabusa2.jaxa.jp/topics/20180619je/index.html
Ryugu from 330 - 240km
in english
http://www.hayabusa2.jaxa.jp/topics/20180619je/index_e.html
Ryugu seen from 330-240km
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#42 by Alpha_Centauri on 19 Jun, 2018 10:45
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That's no
moonasteroid.
(Yes, i went there)
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#43 by mcgyver on 19 Jun, 2018 14:16
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#44 by vaporcobra on 20 Jun, 2018 03:30
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Less than 100km out!
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#45 by mcgyver on 20 Jun, 2018 06:49
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Planned correction maneuvres, taken from simulator data:
22/6: from 0.29 to 0.09 m/s at 00:30 GMT58291.000000 2018/06/22T00:00:00.0 0.3463 0.2734 46.4971 0.010890 -0.003859 -0.299322
58291.006944 2018/06/22T00:10:00.0 0.3529 0.2711 46.3175 0.010939 -0.003867 -0.299424
58291.013888 2018/06/22T00:20:00.0 0.3594 0.2688 46.1378 0.010988 -0.003875 -0.299525
58291.020833 2018/06/22T00:30:00.0 0.3660 0.2664 45.9581 -0.002735 -0.000503 -0.091445
58291.027777 2018/06/22T00:40:00.0 0.3644 0.2661 45.9032 -0.002738 -0.000505 -0.091550
58291.034722 2018/06/22T00:50:00.0 0.3628 0.2658 45.8482 -0.002741 -0.000508 -0.091656
24/6: from 0.126 to 0.012 at 00:30 GMT:58293.006944 2018/06/24T00:10:00.0 -0.1110 0.1121 27.4438 -0.002419 -0.001353 -0.126452
58293.013888 2018/06/24T00:20:00.0 -0.1125 0.1112 27.3679 -0.002413 -0.001356 -0.126605
58293.020833 2018/06/24T00:30:00.0 -0.1139 0.1104 27.2919 0.003327 -0.000321 -0.012317
58293.027777 2018/06/24T00:40:00.0 -0.1119 0.1102 27.2844 0.003304 -0.000322 -0.012470
26/6: from 0.061 to 0.002 at 01:10 GMT58295.034722 2018/06/26T00:50:00.0 -0.0201 0.0277 21.0608 -0.001681 -0.000683 -0.061627
58295.041666 2018/06/26T01:00:00.0 -0.0211 0.0273 21.0237 -0.001692 -0.000685 -0.061832
58295.048611 2018/06/26T01:10:00.0 -0.0221 0.0269 20.9866 0.001988 -0.000297 0.002685
58295.055555 2018/06/26T01:20:00.0 -0.0209 0.0267 20.9881 0.001961 -0.000298 0.002481
27/6: from 0.026 to stop.58296.006944 2018/06/27T00:10:00.0 0.0015 0.0004 20.0315 -0.001256 -0.000355 -0.026044
58296.013888 2018/06/27T00:20:00.0 0.0008 0.0002 20.0158 -0.001276 -0.000356 -0.026261
58296.020833 2018/06/27T00:30:00.0 0.0000 -0.0000 20.0000 0.000038 0.000000 0.000323
58296.027777 2018/06/27T00:40:00.0 0.0000 -0.0000 20.0001 0.000012 0.000000 0.000105 -
#46 by mcgyver on 20 Jun, 2018 12:24
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Simulator data updated.
(last column is vertical speed)
TCM06
Previously:
20/6, 03:30 GMT
58289,145833 2018/06/20T03:30:00,0 -0,4074 0,7378 92,8289 0,048946 -0,019311 -0,841271
58289,152777 2018/06/20T03:40:00,0 -0,3780 0,7262 92,3241 -0,001617 -0,001874 -0,275698
Actually:
20/6 03:30 GMT
58289,145833 2018/06/20T03:30:00,0 -2,1929 1,8624 109,3749 0,036942 -0,015448 -0,734701
58289,152777 2018/06/20T03:40:00,0 -2,1707 1,8531 108,9340 0,004073 -0,007881 -0,381010
Next TCMs:
TCM07:
Previously:
22/6 00:20 GMT
58291,013888 2018/06/22T00:20:00,0 0,3594 0,2688 46,1378 0,010988 -0,003875 -0,299525
58291,020833 2018/06/22T00:30:00,0 0,3660 0,2664 45,9581 -0,002735 -0,000503 -0,091445
Now planned:
22/6 00:20 GMT
58291,013888 2018/06/22T00:20:00,0 0,0525 0,3668 45,9209 0,023751 -0,010678 -0,403516
58291,020833 2018/06/22T00:30:00,0 0,0668 0,3604 45,6787 0,000331 -0,001437 -0,090479
TCM08:
Previously:
24/6 00:30 GMT
58293,020833 2018/06/24T00:30:00,0 -0,1139 0,1104 27,2919 0,003327 -0,000321 -0,012317
58293,027777 2018/06/24T00:40:00,0 -0,1119 0,1102 27,2844 0,003304 -0,000322 -0,012470
Now planned for:
24/6 00:20 GMT
58293,013888 2018/06/24T00:20:00,0 0,1110 0,0421 27,2645 0,000560 -0,002306 -0,125539
58293,020833 2018/06/24T00:30:00,0 0,1114 0,0407 27,1891 0,002246 -0,000111 -0,011788
TCM09:
Previously:
26/6 01:00 GMT
58295,041666 2018/06/26T01:00:00,0 -0,0211 0,0273 21,0237 -0,001692 -0,000685 -0,061832
58295,048611 2018/06/26T01:10:00,0 -0,0221 0,0269 20,9866 0,001988 -0,000297 0,002685
Now planned for:
01:10 GMT[/size]
58295,041666 2018/06/26T01:00:00,0 0,0003 -0,0002 20,9940 -0,002923 -0,000412 -0,061517
58295,048611 2018/06/26T01:10:00,0 -0,0015 -0,0004 20,9570 0,001754 0,000019 0,003058
Arrival:
Previously:
27/7 00:20 GMT
58296,013888 2018/06/27T00:20:00,0 0,0008 0,0002 20,0158 -0,001276 -0,000356 -0,026261
58296,020833 2018/06/27T00:30:00,0 0,0000 -0,0000 20,0000 0,000038 0,000000 0,000323
Now planned for:
27/7 00:20 GMT
58296,013888 2018/06/27T00:20:00,0 0,0009 0,0000 20,0156 -0,001530 -0,000025 -0,025922
58296,020833 2018/06/27T00:30:00,0 0,0000 -0,0000 20,0000 0,000038 0,000000 0,000323 -
#47 by yoichi on 21 Jun, 2018 04:53
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#48 by theinternetftw on 21 Jun, 2018 05:56
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Quick loop of the approach.
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#49 by mcgyver on 21 Jun, 2018 06:25
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Now Ryugu is officially "down there" rather than "up there":Quote
From now on, the asteroid's gravity will dominate the area (Hill area: within about 90 km from the asteroid) will enter!
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https://twitter.com/haya2_jaxa/status/1009368813429592064 -
#50 by mcgyver on 21 Jun, 2018 07:08
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Press conference outcome (in japanese, just wait 1 day for English translation):
http://fanfun.jaxa.jp/jaxatv/files/20180621_hayabusa2.pdf -
#51 by mcgyver on 21 Jun, 2018 12:02
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Official images from latest press release (june 21):
http://www.hayabusa2.jaxa.jp/topics/20180621je/index_e.html
When ready, English press release should be listed here:
http://www.hayabusa2.jaxa.jp/topics/press/
This COULD be its link:
http://www.hayabusa2.jaxa.jp/topics/press/doc/Hayabusa2_Press20180621e.pdf
or
http://global.jaxa.jp/projects/sat/hayabusa2/pdf/Hayabusa2_Press20180621e.pdf
List of previous press release I was able to find:
Japanese:
http://fanfun.jaxa.jp/jaxatv/files/20150128_hayabusa2.pdf
http://fanfun.jaxa.jp/jaxatv/files/20170712_hayabusa2.pdf
http://fanfun.jaxa.jp/jaxatv/files/20171214_hayabusa2.pdf
http://fanfun.jaxa.jp/jaxatv/files/20180419_hayabusa2.pdf
http://fanfun.jaxa.jp/jaxatv/files/20180607_hayabusa2.pdf
http://fanfun.jaxa.jp/jaxatv/files/20180614_hayabusa2.pdf
http://fanfun.jaxa.jp/jaxatv/files/20180621_hayabusa2.pdf
English:
http://www.hayabusa2.jaxa.jp/topics/press/doc/Hayabusa2_Press20180607e.pdf
http://www.hayabusa2.jaxa.jp/topics/press/doc/Hayabusa2_Press20180614e.pdf
http://global.jaxa.jp/projects/sat/hayabusa2/pdf/Hayabusa2_Press20180607e.pdf
http://global.jaxa.jp/projects/sat/hayabusa2/pdf/Hayabusa2_Press20180614e.pdf
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#52 by mcgyver on 21 Jun, 2018 13:23
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Hot spot on Ryugu:
I am beginning to think that asteroids and comets are not different types of bodies, but same bodies with different types of orbits.
In other words: water and ice are everywhere in the Solar System.
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#53 by Stan-1967 on 21 Jun, 2018 13:27
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It's a bit early to make any comparison to the white spots on Ceres. Certainly looks like an interesting body, but the albedo variations could very well have a simple explanation like being from a more recent impact event vs. the salt deposits found as the source of Ceres bright spots.
Great job JAXA getting this mission to it's destination! -
#54 by Svetoslav on 21 Jun, 2018 13:30
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Deleted my post from the update thread, reposting here:Quote
Oh my, we see a Ceres moment on Ryugu - white spots!
And knowing this asteroid is less than 1km in diameter, that's quite surprising. -
#55 by mcgyver on 22 Jun, 2018 06:43
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Could anybody please add a link to update thread in first post?
Anybody? -
#56 by mcgyver on 22 Jun, 2018 07:16
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TCM07 confirmed:Quote
Our 7th Trajectory Control Manoeuvre (TCM07) for optical navigation was made on June 22, 2018 from around 09:30~10:40 JST. Thrusters game a velocity change of 2 cm/s (-x), 1 cm/s (+y) and 31 cm/s (+z). The distance from the spacecraft to Ryugu at the TCM was 45 km.
https://twitter.com/haya2e_jaxa/status/1010032948697956352
200 pixel in ONC-T, 20 pixel in ONC-W, 4.5 m/pixel and 45 m/pixel resolutions.
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#57 by yoichi on 24 Jun, 2018 05:44
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https://twitter.com/haya2e_jaxa/status/1010759732515098625
HAYABUSA2@JAXA @haya2e_jaxa
Our 8th Trajectory Control Manoeuvre (TMC08) for optical navigation was made on June 24, 2018 from ~09:30-09:40 JST. Trusters gave a velocity change of ~0.2cm/3 (+y), 2cm/s (+z). The distance to Ryugu from Hayabusa2 was 38km & the relative speed after TCM08 was ~0.08 m/s (8 cm/s)
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#58 by mcgyver on 24 Jun, 2018 10:27
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TCM08 confirmed but different from planned:QuoteOur 8th Trajectory Control Manoeuvre (TMC08) for optical navigation was made on June 24, 2018 from ~09:30-09:40 JST. Trusters gave a velocity change of ~0.2cm/3 (+y), 2cm/s (+z). The distance to Ryugu from Hayabusa2 was 38km & the relative speed after TCM08 was ~0.08 m/s (8 cm/s)
https://twitter.com/haya2e_jaxa/status/1010759732515098625
Planned:
58293,013888 2018/06/24T00:20:00,0 -0,0541 0,1376 27,1238 0,001939 -0,002281 -0,123958
58293,020833 2018/06/24T00:30:00,0 -0,0529 0,1363 27,0494 0,002306 -0,000590 -0,010717
Actual:
58293.018055 2018/06/24T00:26:00.0 -0.1998 0.2395 38.3500 0.002254 -0.002601 -0.106281
58293.025000 2018/06/24T00:36:00.0 -0.1991 0.2386 38.2940 0.000540 -0.000687 -0.084732
Hence, new TCM added on 26/6:
58295.045833 2018/06/26T01:06:00.0 -0.1652 0.0514 21.0219 0.000191 -0.001503 -0.114487
58295.052777 2018/06/26T01:16:00.0 -0.1638 0.0508 20.9933 0.003624 -0.000580 -0.003281
Final TCM on 27/7 as planned:
58296.018055 2018/06/27T00:26:00.0 -0.0001 0.0002 20.0049 0.000394 -0.000642 -0.020535
58296.025000 2018/06/27T00:36:00.0 0.0000 -0.0000 20.0001 0.000022 0.000000 0.000111
(but actually after TCM08bis the speed will bealready just 3 mm/s)
No new images yet.
No English translation of latest press release yet:
http://www.hayabusa2.jaxa.jp/topics/press/
Next steps after final maneuvre:
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#59 by yoichi on 25 Jun, 2018 06:58
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http://www.hayabusa2.jaxa.jp/topics/20180625je/index_e.html
Asteroid Ryugu seen from a distance of around 40km
Figure 2 shows Ryugu photographed with the ONC-T (Optical Navigation Camera - Telescopic) on June 24, at around 00:01 JST. The appearance of the surface has now become much clearer. The distance between the spacecraft and the asteroid when this photo was taken was about 40 km.