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Target RA (J2000): 197.317459 and deg Target Dec (J2000): -60.30836 and deg Gaia GMag: 8.09 Programme ID: CH_PR100017 Programme Manager: PAGANO PI of observing programme: Benz Title of programme: ANCILLARY SCIENCE - Recovering ephemeris Abstract: There are a number (about 2 tens) of transiting planetst of interest for follow-up characterizing measurements (JWST E-ELT) whose ephemeris must be recovered before going with large facilities and this can be done by CHEOPS. It is proposed to monitor one transit per target the observing window centered on the transit time predicted by the best available ephemeris and lasting two times the uncertainty on T0 plus the transit duration. Target list and target priority shall be modified according to results from K2 and TESS campaigns. [truncated! Please see actual data for full text]

目标赤经（Right Ascension, RA，J2000坐标系）：197.317459 度；目标赤纬（Declination, Dec，J2000坐标系）：-60.30836 度；盖亚G星等（Gaia GMag）：8.09；项目编号（Programme ID）：CH_PR100017；项目主管（Programme Manager）：帕加诺（PAGANO）；观测项目首席研究员：本茨（Benz）；项目名称：辅助科学——恢复行星星历表；摘要：目前存在约二十余个凌日行星，具备使用詹姆斯·韦布空间望远镜（James Webb Space Telescope, JWST）、极大望远镜（Extremely Large Telescope, E-ELT）开展后续表征测量的研究价值，但此类行星的星历需在使用大型观测设施前完成校准，该校准工作可通过系外行星特征探测卫星（Characterizing ExOPlanets Satellite, CHEOPS）完成。本提案提议对每个目标监测一次凌日：观测窗口以现有最优星历预测的凌日时刻为中心，观测时长为T0时刻不确定度的两倍与凌日持续时间之和。目标列表与观测优先级将根据开普勒K2任务与凌日系外行星巡天卫星（Transiting Exoplanet Survey Satellite, TESS）的观测结果进行调整。[内容已截断，请查看完整原始数据以获取全部文本]