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WANG Bo, LIU Lu, YAN Jianguo, GAO Wutong. Development of Asteroid Optical Determination Software and Data Processing Analysis[J]. Geomatics and Information Science of Wuhan University. doi: 10.13203/j.whugis20200195
Citation: WANG Bo, LIU Lu, YAN Jianguo, GAO Wutong. Development of Asteroid Optical Determination Software and Data Processing Analysis[J]. Geomatics and Information Science of Wuhan University. doi: 10.13203/j.whugis20200195

Development of Asteroid Optical Determination Software and Data Processing Analysis

doi: 10.13203/j.whugis20200195
Funds:

The National Natural Science Foundation of China (No. U1831132)

  • Received Date: 2020-04-24
    Available Online: 2021-05-07
  • Based on the first asteroid exploration plan announced by China Space Administration on April 19, 2019, we develop an optical orbit determination software for the main belt comet 133P/Elst-Pizarro (7968), which is one of the mission targets. The 133P/Elst-Pizarro's ground-based optical observation data from July 24, 1979 to October 28, 2019 are analyzed. Compared with the well-known OrbFit software system, it is found that the residual distribution is consistent, the measurement statistical residual RMS is less than 0.01″, and the internal coincidence accuracy of orbit determination is also consistent with each other. The results suggests the reliability of our software. Furthermore, we carry out a simulation orbit determination analysis aimed at 133P/Elst-Pizarro to discuss the orbit determination accuracy from ground-based optical data. When we use 20-year optical observation data measured once a mouth from Yunnan and Chile station and adding Gaussian white noise which is close to the current actual observation level, the results reflect that the optical orbit determination accuracy of the asteroid is at 50 km level. At the same time, it also shows that the optical orbit determination accuracy of the asteroid can be effectively improved by increasing the observation data or reducing the observation noise.
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    [6] Liangliang Yu, Chihhao Hsia, Winghuen Ip. Low-Activity Main-Belt Comet 133P/Elst-Pizarro:New Constraints on Its Albedo, T-emperature, and Active Mechanism from a Thermophy-sical Perspective[J]. The Astron-omical Journal, 2020, 159. 2:66
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Development of Asteroid Optical Determination Software and Data Processing Analysis

doi: 10.13203/j.whugis20200195
Funds:

The National Natural Science Foundation of China (No. U1831132)

Abstract: Based on the first asteroid exploration plan announced by China Space Administration on April 19, 2019, we develop an optical orbit determination software for the main belt comet 133P/Elst-Pizarro (7968), which is one of the mission targets. The 133P/Elst-Pizarro's ground-based optical observation data from July 24, 1979 to October 28, 2019 are analyzed. Compared with the well-known OrbFit software system, it is found that the residual distribution is consistent, the measurement statistical residual RMS is less than 0.01″, and the internal coincidence accuracy of orbit determination is also consistent with each other. The results suggests the reliability of our software. Furthermore, we carry out a simulation orbit determination analysis aimed at 133P/Elst-Pizarro to discuss the orbit determination accuracy from ground-based optical data. When we use 20-year optical observation data measured once a mouth from Yunnan and Chile station and adding Gaussian white noise which is close to the current actual observation level, the results reflect that the optical orbit determination accuracy of the asteroid is at 50 km level. At the same time, it also shows that the optical orbit determination accuracy of the asteroid can be effectively improved by increasing the observation data or reducing the observation noise.

WANG Bo, LIU Lu, YAN Jianguo, GAO Wutong. Development of Asteroid Optical Determination Software and Data Processing Analysis[J]. Geomatics and Information Science of Wuhan University. doi: 10.13203/j.whugis20200195
Citation: WANG Bo, LIU Lu, YAN Jianguo, GAO Wutong. Development of Asteroid Optical Determination Software and Data Processing Analysis[J]. Geomatics and Information Science of Wuhan University. doi: 10.13203/j.whugis20200195
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