JAXA
Ryugu Seen From a Distance of 220-100km (News Release - June 21)
The onboard ONC-T (Optical Navigation Camera - Telescopic) imaged Ryugu from June 18, 2018 at around 12:00 JST to June 20 at around 19:00 JST. At 12:00 JST on June 18, the distance between the spacecraft and asteroid was about 220km, and this decreased to about 100km by June 20, 19:00 JST.
The following image in Figure 1 (above) is the original photograph without any pixel smoothing. The order of the images is the chronological order in which they were captured. The size of the asteroid remains proportional to the distance (no size correction; the asteroid appears smaller when more distant.)
In the following Figure 2 (below), the image has been smoothed and the brightness adjusted to emphasize light and dark regions.
Source: Japan Aerospace Exploration Agency
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JAXA
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