NASA恒星及系外行星数据库
NASA恒星及系外行星数据库（英语：NASA Star and Exoplanet Database、NStED）是NASA用于整理和交叉关联天文学数据的在线恒星行星目录数据库。收集并提供公共数据集。数据包括恒星参数（如位置、大小、温度）、系外行星参数（如质量、轨道参数）和表征数据（如径向速度曲线、光变曲线、图像、光谱）。
网站类型 | 天文学 |
|---|---|
| 创始人 | NASA的JPL和Caltech |
| 网址 | http://nsted.ipac.caltech.edu |
| 现状 | 自2011年12月起不再运行，大多数数据和服务已转移到NASA系外行星档案。 |
自2011年12月起不再运行，大多数数据和服务已转移到NASA系外行星档案。
The NStED collects and serves public data to support the search for and characterization of extra-solar planets (exoplanets) and their host stars. The data include published light curves, images, spectra and parameters, and time-series data from surveys that aim to discover transiting exoplanets. All data are validated by the NStED science staff and traced to their sources. NStED is the U.S. data portal for the CoRoT mission.
Search characteristics
Data are searchable either for an individual star or by stellar and planetary properties.
NStED offers direct access to frequently accessed tables:
Survey programs
NStED also serves photometric time-series data from surveys that aim to discover transiting exoplanets such as Kepler and the CoRoT. NStED provides access to over 500,000 light curves from space and ground-based exoplanet transit survey programs, including:
The transit survey data are linked to an online periodogram service that can be used to search for periods in the transit survey data sets. A user can also upload their own time series data to search for periods in their own data.
The planetary orbital parameters are linked to an online transit ephemeris prediction tool which can be used to predict the probability that an exoplanet may transit and the date/time and observability of the transits.