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HAYABUSA2@JAXA
The official twitter of the JAXA Hayabusa2 asteroid explorer.
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HAYABUSA2@JAXA Nov 12
Replying to @haya2e_jaxa
Observing dark deep space allows us to investigate the level of noise in the observation equipment. This will be the third dark observation after arriving at Ryugu. 2018.11.13 N. S. [4/4] These weekly updates can also be found here:
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HAYABUSA2@JAXA Nov 12
Replying to @haya2e_jaxa
Although we normally image Ryugu, for these tests we changed the spacecraft attitude to intentionally remove the asteroid from the field of view and image deep space (a so-called ‘dark observation’). [3/4]
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HAYABUSA2@JAXA Nov 12
Replying to @haya2e_jaxa
This week, we performed a health check for the optical navigation cameras (ONC), the thermal infrared imager (TIR) and the near infrared spectrometer (NIRS3). [2/4]
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HAYABUSA2@JAXA Nov 12
★ Hayabusa2 status (2018.11.05) ★ After completing important operations such as TD1-R3 and BOX-C2, the spacecraft returned to the home position at altitude of 20km. [1/4]
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HAYABUSA2@JAXA Nov 7
Replying to @haya2e_jaxa
This is another step forward for the TD1 operation at the beginning of next year. The spacecraft then slowly rose to save fuel and returned to the home position on 11/5. 2018.11.6 Y.T.2 [5/5)] These weekly updates can be found online:
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HAYABUSA2@JAXA Nov 7
Replying to @haya2e_jaxa
The spacecraft captured an image at an altitude of ~2.5km with the Optical Navigation Camera- Telescopic (ONC-T), and withdrew after descending to ~2.2km. The result was a huge success! The TM retroreflective material reflected sunlight & made the TM glow in the image. [4/5]
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HAYABUSA2@JAXA Nov 7
Replying to @haya2e_jaxa
We arrived at BOX-C2 on 11/1 with the aim of imaging the TM (Target Marker) that was successfully dropped during TD1-R3, and to accurately identify its position. The spacecraft descended over the sub-solar point where the spacecraft, Sun & TM on Ryugu’s surface all line up. [3/5]
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HAYABUSA2@JAXA Nov 7
Replying to @haya2e_jaxa
This time was a special operation in 2 steps; BOX-C1 where the spacecraft descended to an altitude of ~5.1km & BOX-C2, with descent to ~2.2 km. Arrival at BOX-C1 occurred as scheduled on 10/30 and we completed observations using the laser altimeter and optical cameras. [2/5]
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HAYABUSA2@JAXA Nov 7
★ Hayabusa2 status (2018.10.29) ★ Our second “BOX-C” operation began on 10/27, immediately after returning to the 20km altitude home position from the “TD1-R3” operation. [1/5]
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HAYABUSA2@JAXA Nov 5
Replying to @haya2e_jaxa
[BOX-C] That the target marker could be seen on the surface of Ryugu at an altitude above 2km is a good sign for the touchdown operation. To reach Ryugu's surface, the spacecraft depends on the light reflected by a target marker only 10cm in size; it is the lighthouse on Ryugu.
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HAYABUSA2@JAXA Nov 4
Replying to @haya2e_jaxa
[BOX-C] We saw the target marker from an altitude of 2.4km. Left: wide-angle (ONC-W1) image before dropping the TM. Right: telephoto (ONC-T) image on 11/1 at 11:17 JST — enhanced image on the lower right. The Sun is behind Hayabusa2, making the retroreflective TM material shine!
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HAYABUSA2@JAXA Oct 30
Replying to @haya2e_jaxa
A movie this cool is worth showing twice! This is for anyone who prefers the format as a gif. Did you see the comments from our Project Members?
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HAYABUSA2@JAXA Oct 30
Our small monitor camera is so cool! This camera was made and installed from donations from the public. Looking down the sampler horn at Ryugu, do you feel you’re flying over the asteroid?
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HAYABUSA2@JAXA retweeted
NASA's OSIRIS-REx Oct 30
🧐 🤯 🤩 My team created this "super-resolution" view of Bennu using eight images I captured with PolyCam on Oct. 29 from about 205 miles (330 km) away. Bennu occupies about 100 pixels, and its north pole is at the top of the image. Details:
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HAYABUSA2@JAXA Oct 30
Replying to @haya2e_jaxa
Finally the spacecraft ascended. This result was a huge success! Everyone is feeling relieved as we move into next year. 2018.10.30. F.T. (4/4) These weekly updates can be found at:
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HAYABUSA2@JAXA Oct 30
Replying to @haya2e_jaxa
…. and then dropped a TM (Target Marker). The spacecraft was able to recognise the image of the TM when lit by the FLA strobe light (FLAsh lamp), moving to just above the TM position and continuing to hover. (3/4)
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HAYABUSA2@JAXA Oct 30
Replying to @haya2e_jaxa
The spacecraft descended to the same region as TD1-R1-A using the LRF (Laser Range Finder); a short-range laser sensor with 4 beams that measures distance to the asteroid surface. Using this measurement, the spacecraft automatically maintained altitude & hovered above Ryugu (2/4)
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HAYABUSA2@JAXA Oct 30
★ Hayabusa2 status (2018.10.22) ★ Making maximum use of the data obtained during TD1-R1-A, the TD1-R3 operation ran from October 23 - 25. This was a rehearsal that covered the operation sequence until the point just before touchdown. (1/4)
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HAYABUSA2@JAXA Oct 29
Replying to @haya2e_jaxa
[BOX-C] BOX-C operations are not defined as critical operations. This operation lowers the altitude from BOX-A (home position at ~20km altitude) within the normal operation routine. Therefore, there is not a specially organised team, as with operations such as TD1-R3.
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HAYABUSA2@JAXA Oct 29
[BOX-C] Touchdown rehearsal, TD1-R3, is just over but we are beginning BOX-C operations. The spacecraft will perform low altitude observations at ~5km from today (October 30). After this, we plan to further lower the altitude for images near the touchdown candidate site, L08.
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