Measuring the orbital shift of a 780-meter-wide primary asteroid and its moonlet from millions of miles away isn’t trivial. When DART slammed into Dimorphos, it didn't knock the binary system wildly off its trajectory around the Sun. The change in the system's heliocentric trajectory was expected to be small, a minuscule nudge that would become apparent only after months or years of continuous observation. By analyzing enough painstakingly gathered data, a global team of researchers led by Rahil Makadia at the University of Illinois Urbana-Champaign has now determined the consequences of the DART impact.
Фото: Сергей Бобылев / РИА Новости
。关于这个话题，新收录的资料提供了深入分析
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Normal quartz oscillators drift slightly with changes in temperature, which is bad for precision metrology equipment. A TCXO contains a quartz crystal, an amplifier circuit to drive it, and a temperature compensation circuit which shifts the resonant peak slightly up or down to null out the effects of thermal drift.