Add skill: j2000-ecef-converter

skills/j2000-ecef-converter/README.md

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+# j2000-ecef-converter
+
+High precision J2000 ECI to WGS84 ECEF coordinate conversion tool using exact velocity formula v2 equals R at v1 minus omega cross p2 for centimeter-level position accuracy and micrometer-level velocity accuracy with Earth Orientation Parameters support.
+
+## Installation
+
+```bash
+refly skill install skp-kuyabdprke2h401o6blgp7db
+```
+
+## Triggers
+
+- j2000 to wgs84
+- eci to ecef
+- coordinate conversion
+- J2000转WGS84
+- ECI转ECEF
+
+## Tags
+
+`orbital` `astronomy` `space` `gnss` `coordinate` `eop` `precision`
+
+## Author
+
+jsy96
+
+## Links
+
+- [View on Refly](https://refly.ai/skill/skp-kuyabdprke2h401o6blgp7db)

skills/j2000-ecef-converter/SKILL.md

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+---
+name: j2000-ecef-converter
+description: High precision J2000 ECI to WGS84 ECEF coordinate conversion tool using exact velocity formula v2 equals R at v1 minus omega cross p2 for centimeter-level position accuracy and micrometer-level velocity accuracy with Earth Orientation Parameters support.
+skillId: skp-kuyabdprke2h401o6blgp7db
+workflowId: see-workflow-mapping
+triggers:
+  - j2000 to wgs84
+  - eci to ecef
+  - coordinate conversion
+  - J2000转WGS84
+  - ECI转ECEF
+tags:
+  - orbital
+  - astronomy
+  - space
+  - gnss
+  - coordinate
+  - eop
+  - precision
+version: 1.0.0
+---
+
+# j2000-ecef-converter
+
+High precision J2000 ECI to WGS84 ECEF coordinate conversion tool using exact velocity formula v2 equals R at v1 minus omega cross p2 for centimeter-level position accuracy and micrometer-level velocity accuracy with Earth Orientation Parameters support.
+
+## Installation
+
+```bash
+refly skill install skp-kuyabdprke2h401o6blgp7db
+```
+
+## Usage
+
+After installation, run the skill using your installation ID:
+
+```bash
+refly skill run <installationId> --input '{}'
+```
+
+The installation ID is returned when you run `refly skill install`.