Queqiao 1 (Chang'e 4 Relay, CE 4 Relay) Subscribe with Steady Queqiao 1 (Chang'e 4 Relay, CE 4 Relay) Home Spacecraft by country China Queqiao 1 (Chang'e 4 Relay) [CNSA] Queqiao 1, also known initially as Chang'e 4 Relay, is a Chinese relay satellite mission in support of the Chang'e 4 rover landing on the far site on the moon. The 425 kg relay satellite is based on the three-axis stabilized CAST-100 small satellite bus featuring an 130 N hydrazine propulsion system. It carries a deployable 4.2 m dish antenna for the relay equipment. It provides four 256 kBps X-band links between itself and the lander/rover and one 2 MBps S-band link towards earth. Besides the relay function, the spacecraft also carries the Dutch NCLE Low-frequency radio detector to provide radio-sky images, and frequency dependence of radio in the very low frequency band and to perform low-frequency radio astronomical observations. The mission is to be launched in 2018 on a CZ-4C rocket about 6 month in advance of the Chang'e 4 lander and rover. Via a lunar fly-by, it will be put into an halo orbit around the Earth-Moon L2 Lagrange point. It has a planned live of more than five years to support further far-side missions. Nation: China Type / Application: Lunar Orbiter, relay, radio astronomy Operator: CNSA Contractors: CAST Equipment: Relay payload, NCLE low-frequency radio detector Configuration: CAST-100 Propulsion: ? Power: 2 deployable solar arrays, batteries Lifetime: > 5 years Mass: 425 kg Orbit: Earth-Moon Lagrange point L2 halo orbit Satellite COSPAR Date LS Launch Vehicle Remarks Queqiao 1 (Chang'e 4 Relay, CE 4 Relay) 2018-045A 20.05.2018 Xi LC-3 CZ-4C with DSLWP A1, DSLWP A2 Launch Sites: Xi = Xichang Space Center (Songlin), Sichuan, China Further Queqiao missions: Queqiao 1 Queqiao 2 Cite this page: Copy to clipboard Last update: 11.06.2025 � Gunter Dirk Krebs 1996-2026 | Contact | Legal Disclosure | Privacy Statement | Terms of Use AI Usage Notice: This page may not be used for training or improving machine learning models. Summarization and retrieval-augmented generation (RAG) are permitted only with clear attribution and a direct link to the original URL. Launch Vehicles Upper Stages Engines Launch Sites Chronology Spacecraft by nation Spacecraft by type S/C Platforms Crewed Missions Astronauts Links Books Unit Calculator Important Info Subscribe Contact Search Quicksearch