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  • 标题:The Case for a Large-scale Occultation Network
  • 本地全文:下载
  • 作者:Malena Rice ; Gregory Laughlin
  • 期刊名称:The Astronomical journal
  • 印刷版ISSN:0004-6256
  • 电子版ISSN:1538-3881
  • 出版年度:2019
  • 卷号:158
  • 期号:1
  • 页码:1-18
  • DOI:10.3847/1538-3881/ab21df
  • 语种:English
  • 出版社:American Institute of Physics
  • 摘要:We discuss the feasibility of and present initial designs and approximate cost estimates for a large (N∼2000) network of small photometric telescopes that is purpose-built to monitor V15 Gaia mission program stars for occultations by minor solar system bodies. The implementation of this network would permit measurement of the solar system’s tidal gravity field to high precision, thereby revealing the existence of distant trans-Neptunian objects such as the proposed “Planet Nine.” As a detailed example of the network capabilities, we investigate how occultations by Jovian Trojans can be monitored to track the accumulation of gravitational perturbations, thereby constraining the presence of undetected massive solar system bodies. We also show that the tidal influence of Planet Nine can be discerned from that of smaller, nearer objects in the Kuiper Belt. Moreover, ephemerides for all small solar system bodies observed in occultation could be significantly improved using this network, thereby improving spacecraft navigation and refining solar system modeling. Finally, occultation monitoring would generate direct measurements of size distributions for asteroid populations, permitting a better understanding of their origins.
  • 关键词:ephemerides;Kuiper belt: general;minor planets, asteroids: general;occultations;planets and satellites: detection;planets and satellites: individual (Planet Nine)
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