From: Inflight calibration of the optical navigation camera for the extended mission phase of Hayabusa2
Asteroid | Ryugu | 2001 CC21 | 1998 KY26 | ||
---|---|---|---|---|---|
Spectral types | C | L | L | ||
Arrival date* | 2018/06/27 | 2026/07/15 | 2031/07/15 | ||
Days since arrival at Ryugu | 0 | 2940 | 4766 | ||
Estimated relative sensitivity [%] | – | 80.6–84.1 | 77.8–84.1 | ||
Heliocentric distance [km] | 1.4665E + 08 | 1.2062E + 08 | 1.6710E + 08 | ||
Albedo [%] | 4 | 20 | 4 | 20 | 4 |
Exposure time ratio** | 1 | 0.17 | 0.84 | 0.33 | 1.67 |