MoonSatKit

MoonSatKit is a pure MoonBit toolkit for satellite orbit data, TLE parsing, time handling, and the first steps toward pass prediction and visualization.

Project status: initial scaffold. The public data model, UTC helpers, and TLE parsing/validation layer are in place; SGP4 propagation and pass search are the next major pieces.

Current scope

• TLE parsing with raw field preservation
• TLE checksum validation
• UTC civil timestamp parsing and formatting
• Leap-year and month-length helpers
• Vector, station, observation, and pass data types for future propagation code
• CLI entry points for TLE validation and timestamp parsing

Quick start

Parse a timestamp:

moon run cmd/main -- time parse 2026-08-11T12:00:00

Validate a TLE:

moon run cmd/main -- tle validate "1 25544U 98067A   26224.50000000  .00001234  00000-0  12345-4 0  9991" "2 25544  51.6416  21.0000 0001234 123.4567 234.5678 15.50000000"

Roadmap

• Julian day and sidereal time
• WGS-84 and frame conversions
• SGP4 near-Earth propagation
• Ground-station observation geometry
• Pass search and event interpolation
• JSON, CSV, and GeoJSON export

Development

moon info
moon fmt
moon test --target all --deny-warn