We provide formulae for the calculation of precise Doppler velocities of sunlight, in both the case of direct observations of the Sun and in reflection from the surfaces of solar system objects such as the Moon or asteroids. We discuss the meaning of a "barycentric correction" of measurements of these Doppler velocities, which is a different procedure from the analogous correction for starlight, and provide a formula for reducing such measurements to the component of the Sun's motion in the direction of Earth or other solar system object. We have implemented this procedure in the public barycorrpy Python package and use it to explore the properties of the barycentric-corrected Doppler velocity of sunlight over 30 yr. When measured directly, we show that it is dominated by nonperiodic motion due to Jupiter and that the signals of the other planets, including Venus, are not discernible in Fourier space. We show that "detecting" Venus in Doppler velocities of sunlight will...

中文翻译：

---

精确的阳光径向速度测量的重心校正

在直接观察太阳和从太阳系物体（例如月球或小行星）表面反射的情况下，我们提供了用于精确计算太阳光的多普勒速度的公式。我们讨论了对这些多普勒速度测量的“重心校正”的含义，这与对星光的类似校正是不同的过程，并提供了一个公式，用于将这些测量值减少到太阳在地球方向或地球方向上的运动分量。其他太阳系物体。我们已经在公共的barycorrpy Python程序包中实现了此过程，并使用它来探索30年以上经重心校正的多普勒太阳光速度的特性。直接测量时 我们证明了它是由木星引起的非周期性运动所控制的，并且在维里叶空间中无法辨认包括维纳斯在内的其他行星的信号。我们表明，在多普勒太阳光速度中“检测”金星将...