TD-1A, or Thor-Delta 1A (or just TD-1), was a European astrophysical research satellite which was launched in 1972. Operated by the European Space Research Organisation, TD-1A made astronomical surveys primarily in the ultraviolet, but also using x-ray and gamma ray detectors.
TD-1A, or Thor-Delta 1A (or just TD-1), was a European astrophysical research satellite which was launched in 1972. Operated by the European Space Research Organisation, TD-1A made astronomical surveys primarily in the ultraviolet, but also using x-ray and gamma ray detectors.
==Spacecraft== TD-1A was named after the Thor-Delta series of rockets, a derivative of which was used to launch it. It was a satellite which measured by by . The spacecraft was three-axis stabilised, with Sun sensors used to maintain a constant attitude with respect to the Sun.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).