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Mission: Hayabusa 2
Marcin600
post Aug 22 2019, 12:22 PM
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2019-08-22 Hayabusa2 reporter briefing in English :

- Place names related to the artificial crater
- Status of MINERVA-II1
- Future plans
- Capsule re-entry sequence and recovery method

About MINERVA-II2:
„In order to obtain meaningful results using Rover-2 (university consortium development), separation from a relatively high altitude (about 1km) is planned, with the descent to the asteroid surface over time used to estimate the asteroid’s gravitational field by monitoring the descending orbit”.

• September 5 - „the target marker separation operation will be performed as a rehearsal for MINERVA-II2 separation. The two target markers will be separated at an altitude of about 1km”
• September 24 (planned) - details of this operation will be explained at the press briefing
• Nov-Dec 2019 - departure from Ryugu;
• end of 2020 - capsule re-entry


Omusubi-Kororin crater: "...The crater will also continue to be referred to as the “SCI crater”, depending on the situation..."


(Image credit: JAXA, University of Tokyo, Kochi University, Rikkyo University, Nagoya University, Chiba Institute of Technology, Meiji University, University of Aizu, AIST. I added new boulder names and scale bar)
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Marcin600
post Aug 22 2019, 12:38 PM
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And from previous press material (July 25) - photo of SCI crater (Omusubi-Kororin) from above the Ryugu surface
(Oryginal picture from the Hayabusa2 website. Credit:JAXA, modificated)
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Marcin600
post Aug 22 2019, 04:45 PM
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My attempt to link both views of the SCI crater (oryginal pictures from the Hayabusa2 website: 1 and 2 . Credit:JAXA, modificated ):
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Marcin600
post Aug 22 2019, 05:04 PM
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New names of boulders inside SCI crater (Oryginal picture on the Hayabusa2 website. Credit:JAXA, modificated)
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Marcin600
post Sep 8 2019, 03:13 AM
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September 3: "...On August 29, the back-up reaction wheel that has not been used since October last year was tested, and an abnormal value (an increased torque) was detected. The spacecraft therefore autonomously moved into the Safe-Hold state. ... On August 30...the spacecraft returned to normal [state]. However, as the spacecraft moved away from the home position due to entering Safe-Hold, we are currently having to return to the home position..."

September 6 [Google translation]: "Hayabusa 2" was away from the home position (HP), but now it has returned to almost HP. It was planned to arrive at HP this weekend, but given the possibility of approaching Typhoon No. 15 and affecting the operation of ground stations on Sunday and Monday, HP will arrive on Tuesday (9/10). [We] adjusted the speed of the spacecraft."

September 3 (again): "...The ’Target marker separation operation’ scheduled for September 5 has been postponed due to the spacecraft entering the Safe-Hold state...We will report again about the target marker separation when a new schedule has been decided."
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Marcin600
post Sep 20 2019, 10:51 PM
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Image of the first target marker (TM-E) separation”.
„This is an overlay of images taken every 4s (for ~1min) as the spacecraft ascends at 11cm/s. TM descent speed is still almost zero. Separation time: 2019/9/17 at 01:17 JST. Altitude: 1km.”
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Marcin600
post Sep 20 2019, 10:54 PM
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„The separation image of the 2nd target marker, TM-C.”
„This is an overlay of images taken every 4s (for ~1min) while the spacecraft ascends at 11cm/s. TM descent speed is still almost zero. Separation time: 2019/9/17 at 01:24 JST. Altitude: 1km.”
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