We present results from a new pipeline custom-designed to search for faint, undiscovered solar system bodies using full-frame image data from the NASA Transiting Exoplanet Survey Satellite (TESS) mission. This pipeline removes the baseline flux of each pixel before aligning and coadding frames along plausible orbital paths of interest. We first demonstrate the performance of the pipeline by recovering the signals of three trans-Neptunian objects—90377 Sedna (V=20.64), 2015 BP519 (V=21.81), and 2007 TG422 (V=22.32)—both through shift-stacking along their known sky-projected paths and through a blind recovery. We then apply this blind-search procedure in a proof-of-concept survey of TESS Sectors 18 and 19, which extend through a portion of the Galactic plane in the Northern Hemisphere. We search for dim objects at geocentric distances d=70–800 au in a targeted search for Planet Nine and any previously unknown detached Kuiper Belt objects that may shed light on the Planet Nine hypothesis. With no input orbital information, our present pipeline can reliably recover the signals of distant solar system bodies in the Galactic plane with V<21 and current distances d≲150 au, and we elaborate on paths forward to push these limits in future optimizations. The methods described in this paper will serve as a foundation for an all-sky shift-stacking survey of the distant solar system with TESS.

我们展示了一条新管道的结果，该管道经过专门设计，可以使用来自NASA过渡系外行星勘测卫星（TESS）任务的全帧图像数据搜索微弱的，未被发现的太阳系物体。该管线在沿可能的目标轨道路径对齐和共添加帧之前，删除了每个像素的基线通量。我们首先通过恢复3海王星外天体，小行星90377（的信号证明了管线的性能V = 20.64），2015年BP519（V = 21.81），和2007年TG422（V= 22.32）-沿其已知的天空投影路径进行移位堆叠，以及盲目恢复。然后，我们在TESS部门18和19的概念验证调查中应用此盲目搜索程序，该调查遍及北半球的银河平面的一部分。我们有针对性地搜索“九号行星”和任何先前未知的分离的柯伊伯带天体，它们可能会揭示“九号行星”假说，在地心距离d = 70–800 au处搜索昏暗物体。在没有输入轨道信息的情况下，我们现有的管道可以可靠地恢复V <21且当前距离为d的银河系中遥远的太阳系物体的信号150 au，我们详细说明了在未来的优化中突破这些限制的方法。本文介绍的方法将为使用TESS对遥远的太阳系进行全天平移堆叠调查奠定基础。