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arXiv 1901.02677astro-ph.IM
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PicSat的短暂生命和突然死亡,一个小型3U CubeSat梦想着系外行星探测

Short life and abrupt death of PicSat, a small 3U CubeSat dreaming of exoplanet detection

Mathias Nowak, Sylvestre Lacour, Antoine Crouzier, Lester David, Vincent Lapeyrère, Guillaume Schworer

摘要:

PicSat是一个三个单元的立方体卫星(尺寸为30 cm x 10 cm x 10 cm),开发用于监测beta PicSat系统。主要的科学目标是探测巨行星β Picasso b的希尔球的可能凌日。次要目标包括研究星周盘,并在可见波段探测外彗星。该任务还有一个技术目标:展示我们在小型卫星平台上将星光注入单模光纤的能力。为了实现所有这些目标,制造了一个专用的光机械有效载荷,并将其集成到商业3U平台中,以及商业ADCS(姿态确定和控制系统)。该卫星于2018年1月12日在PSLV-C40火箭上成功到达低地球轨道。不幸的是,在2018年3月20日,经过10周的运行,卫星陷入了沉默,任务提前结束。此外,由于ADCS的故障,卫星在10周的运行中从未真正指向目标恒星。在本文中,我们报告了PicSat任务的开发过程,以及它没有提供任何有用的天文数据的原因。

英文摘要:

PicSat was a three unit CubeSat (measuring 30 cm x 10 cm x 10 cm) which was developed to monitor the beta Pictoris system. The main science objective was the detection of a possible transit of the giant planet beta Pictoris b's Hill sphere. Secondary objectives included studying the circumstellar disk, and detecting exocomets in the visible band. The mission also had a technical objective: demonstrate our ability to inject starlight in a single mode fiber, on a small satellite platform. To answer all those objectives, a dedicated opto-mechanical payload was built, and integrated in a commercial 3U platform, along with a commercial ADCS (Attitude Determination and Control System). The satellite successfully reached Low Earth Orbit on the PSLV-C40 rocket, on January, 12, 2018. Unfortunately, on March, 20, 2018, after 10 weeks of operations, the satellite fell silent, and the mission came to an early end. Furthermore, due to a failure of the ADCS, the satellite never actually pointed toward its target star during the 10 weeks of operations. In this paper, we report on the PicSat mission development process, and on the reasons why it did not deliver any useful astronomical data.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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