satellitetoolbox-geomagnetic
SatelliteToolboxGeomagneticField.jl for computing Earth's geomagnetic field using IGRF and dipole models. Use when computing magnetic field vectors, IGRF field values, or geomagnetic torques on spacecraft.
Profile →npx skills add majiayu000/claude-skill-registry --skill satellitetoolbox-geomagnetic-hammerhead-space-agenticcodingrules --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# SatelliteToolboxGeomagneticField.jl Earth's geomagnetic field computation. Repo: [JuliaSpace/SatelliteToolboxGeomagneticField.jl](https://github.com/JuliaSpace/SatelliteToolboxGeomagneticField.jl) ## IGRF Model ```julia # Angles in radians B = igrf(date, r, λ, Ω; max_degree=13) # Geocentric (default) B = igrf(date, h, λ, Ω, Val(:geodetic); max_degree=13) # Geodetic # Angles in degrees (d suffix) B = igrfd(date, r, λ_deg, Ω_deg; max_degree=13) B = igrfd(date, h, λ_deg, Ω_deg, Val(:geodetic)) ``` ## Simplified Dipole Model ```julia B = geomagnetic_dipole_field(r_ecef, year) # r_ecef in meters, returns B in ECEF [nT] ``` ## Pre-allocated Legendre Buffers ```julia B = igrf(date, r, λ, Ω; P=P_matrix, dP=dP_matrix) ``` ## Key Conventions - `date` as decimal year (e.g., `2024.5`), valid range: 1900-2035 - `igrf`: angles in **radians**. `igrfd`: angles in **degrees** - Altitude/distance in **meters** - Output: geomagnetic field in **nT** in NED (North-East-Down) frame - Position reference: `Val(:geocentric)` (default) or `Val(:geodetic)` - IGRF v14, spherical harmonics up to degree 13
- IGRF Model
- Simplified Dipole Model
- Pre-allocated Legendre Buffers
- Key Conventions
What does the satellitetoolbox-geomagnetic skill do?
SatelliteToolboxGeomagneticField.jl for computing Earth's geomagnetic field using IGRF and dipole models. Use when computing magnetic field vectors, IGRF field values, or geomagnetic torques on spacecraft.
How do I install it?
Run `npx skills add majiayu000/claude-skill-registry --skill satellitetoolbox-geomagnetic-hammerhead-space-agenticcodingrules --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From majiayu000/claude-skill-registry, a repository with 534 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.