Space Data Centers Database
Search and compare space data center projects and related orbital computing demonstrations, including developers, technical specifications, suppliers, agreements and milestones. Follow each commitment to its original announcement.
Catalog: 98 projects. 13 proposal / study · 35 development · 13 launched · 20 demonstrated · 4 operating · 10 historical · 3 uncertain. These are project classifications, not spacecraft counts or verified commercial capacity.
37 projects classified as launched, demonstrated or operating: 29 reviewed, 8 with review limits or awaiting review. Each project appears in one classification.
Linked view: Xuechen computing constellation.
Columns & coverage
1 of 1 projects have values for the selected fields. 1–2 of 2 configuration rows shown. Projects without values are hidden.
— No verified value recorded · N/A Not applicable · TBD Not yet defined · Conflict Unresolved. Configurations remain separate. Hardware ratings and plans do not establish measured performance. Open Details & sources for evidence and coverage notes.
| Project / configuration | Compute hardware | Compute throughput | Memory / storage |
|---|---|---|---|
| Xuechen computing constellationXC03 / Changyuan-01 planned configurationXuechen Xinghang (北京雪辰星航)Project status: In development — planned launches | Planned XC03 Zhijiang AI computer; distinguish from Xuechen 01A/01BRecorded descriptionExisting catalog prose, not a new measurement | 2,070 TFLOPS · FP4 statedXC03 Zhijiang AI computerReported specificationPlanned specification · February 2027 | 3.84 TBXC03 Zhijiang AI computerReported specificationPlanned specification · February 2027 128 GBXC03 Zhijiang AI computerReported specificationPlanned specification · February 2027 8 TbXC03 RF data-transmission subsystem storageReported specificationplanned specification |
Memory / storage: 3.84 TB XC03 Zhijiang AI computer. Specification observed in the official homepage on October 8, 2026. Source publication date is not disclosed. Company-disclosed planned specification, not measured in orbit. Precision and measurement basis: storage specification. Planned specification · February 2027. Included with these qualifications. Source observation: 2026-10-08. Supporting source ↗Compute throughput: 2,070 TFLOPS · FP4 stated XC03 Zhijiang AI computer. Specification observed in the official homepage on October 8, 2026. Source publication date is not disclosed. Company-disclosed planned specification, not measured in orbit. Precision and measurement basis: FP4. Planned specification · February 2027. Included with these qualifications. Source observation: 2026-10-08. Supporting source ↗Memory / storage: 128 GB XC03 Zhijiang AI computer. Specification observed in the official homepage on October 8, 2026. Source publication date is not disclosed. Company-disclosed planned specification, not measured in orbit. Precision and measurement basis: memory specification. Planned specification · February 2027. Included with these qualifications. Source observation: 2026-10-08. Supporting source ↗Memory / storage: 8 Tb XC03 RF data-transmission subsystem storage. Planned RF subsystem storage in terabits as published. Distinct from the AI computer’s 3.84 TB storage. No summation or bit-to-byte conversion is applied. planned specification. Included with these qualifications. Source observation: 2026-10-27. Supporting source ↗Compute hardware: Planned XC03 Zhijiang AI computer; distinguish from Xuechen 01A/01B Existing project description. Hardware description only, not a throughput benchmark. Preserve the named mission/generation. Recorded source links are in the supporting evidence below. Existing catalog prose, not a new measurement. Included with these qualifications. Source observation: 2026-10-27. Supporting source ↗ | |||
| Xuechen computing constellationEach Xuechen 01A / 01B planned spacecraftXuechen Xinghang (北京雪辰星航)Project status: In development — planned launches | — | 4 POPS · FP8 statedEach Xuechen 01A / 01BReported specificationPlanned specification · late 2026 | 16 TBEach Xuechen 01A / 01BReported specificationPlanned specification · late 2026 |
Compute throughput: 4 POPS · FP8 stated Each Xuechen 01A / 01B. Specification observed in the official homepage on October 8, 2026. Source publication date is not disclosed. Company-disclosed planned specification, not measured in orbit. Precision and measurement basis: FP8. Planned specification · late 2026. Included with these qualifications. Source observation: 2026-10-08. Supporting source ↗Memory / storage: 16 TB Each Xuechen 01A / 01B. Specification observed in the official homepage on October 8, 2026. Source publication date is not disclosed. Company-disclosed planned specification, not measured in orbit. Precision and measurement basis: storage specification. Planned specification · late 2026. Included with these qualifications. Source observation: 2026-10-08. Supporting source ↗Compute hardware: A value is recorded for another configuration. No supported value is assigned to this configuration. | |||
Technical specifications retain the source’s original units and evidence status. Hardware counts, compute rates and power are not equivalent; launched hardware does not establish demonstrated performance. Supplier counts include suppliers and hosts only, reflect current filters and cover this directory, not the entire market. “No record” means no disclosure captured; it does not mean the work is unawarded. Latest developments use source dates, not routine review or collection dates.