How do I install the Satellitetoolbox Base skill?

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Is Satellitetoolbox Base free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Satellitetoolbox Base?

majiayu000 (@majiayu000) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Satellitetoolbox Base by majiayu000

Name: Satellitetoolbox Base
Rating: 4.666666666666667 (3 reviews)
Author: majiayu000

Satellitetoolbox Base

SatelliteToolboxBase.jl providing foundational types, constants, and orbit representations for the JuliaSpace ecosystem. Use when working with KeplerianElements, OrbitStateVector, anomaly conversions, Julian Date utilities, or SatelliteToolbox constants.

majiayu000 301a0a8 2 files · 2.9 KB Updated Sep 9, 2026 567 repo stars

File contents

SatelliteToolboxBase.jl

Foundation package for the JuliaSpace SatelliteToolbox ecosystem. Repo: JuliaSpace/SatelliteToolboxBase.jl

CRITICAL: Unit Convention

SatelliteToolbox uses meters and m/s throughout. HAMMERHEAD libraries use km and km/s. Always convert at interop boundaries (* 1e3 or / 1e3).

Key Types

KeplerianElements{Tepoch, T}  # t [JD], a [m], e, i [rad], Ω [rad], ω [rad], f [rad]
OrbitStateVector{Tepoch, T}   # t [JD], r::SVector{3,T} [m], v::SVector{3,T} [m/s]
Ellipsoid{T}                  # a (semi-major), f (flattening) -> auto-computes b, e², el²

Constants

Constant	Value	Unit
`GM_EARTH`	3.986004415e14	m³/s²
`EARTH_EQUATORIAL_RADIUS`	6378137.0	m
`EARTH_ANGULAR_SPEED`	7.292115e-5	rad/s
`ASTRONOMICAL_UNIT`	1.496e11	m
`SUN_RADIUS`	6.96342e8	m
`JD_J2000`	2451545.0	Julian Day
`WGS84_ELLIPSOID`	Ellipsoid{Float64}	WGS-84

Orbit Conversions

kepler_to_rv(orb)          # -> (r::SVector{3}, v::SVector{3}) in meters, m/s
kepler_to_sv(orb)          # -> OrbitStateVector
rv_to_kepler(t, r, v)      # -> KeplerianElements
sv_to_kepler(sv)           # -> KeplerianElements

Anomaly Conversions (all radians, returns [0, 2π])

mean_to_eccentric_anomaly(e, M; max_iterations=10, tol=nothing)
mean_to_true_anomaly(e, M)
eccentric_to_true_anomaly(e, E)
true_to_eccentric_anomaly(e, f)
true_to_mean_anomaly(e, f)

Time Utilities

date_to_jd(year, month, day, hour, min, sec)  # -> Julian Day
jd_to_date(JD)                                 # -> (year, month, day, hour, min, sec)
jd_to_gmst(JD)                                 # -> GMST [rad]

---name: satellitetoolbox-basedescription: SatelliteToolboxBase.jl providing foundational types, constants, and orbit representations for the JuliaSpace ecosystem. Use when working with KeplerianElements, OrbitStateVector, anomaly conversions, Julian Date utilities, or SatelliteToolbox constants.--- # SatelliteToolboxBase.jl Foundation package for the JuliaSpace SatelliteToolbox ecosystem. Repo: [JuliaSpace/SatelliteToolboxBase.jl](https://github.com/JuliaSpace/SatelliteToolboxBase.jl) ## CRITICAL: Unit Convention SatelliteToolbox uses **meters and m/s** throughout. HAMMERHEAD libraries use **km and km/s**. Always convert at interop boundaries (`* 1e3` or `/ 1e3`). ## Key Types ```julia KeplerianElements{Tepoch, T} # t [JD], a [m], e, i [rad], Ω [rad], ω [rad], f [rad] OrbitStateVector{Tepoch, T} # t [JD], r::SVector{3,T} [m], v::SVector{3,T} [m/s] Ellipsoid{T} # a (semi-major), f (flattening) -> auto-computes b, e², el² ``` ## Constants | Constant | Value | Unit | |---|---|---| | `GM_EARTH` | 3.986004415e14 | m³/s² | | `EARTH_EQUATORIAL_RADIUS` | 6378137.0 | m | | `EARTH_ANGULAR_SPEED` | 7.292115e-5 | rad/s | | `ASTRONOMICAL_UNIT` | 1.496e11 | m | | `SUN_RADIUS` | 6.96342e8 | m | | `JD_J2000` | 2451545.0 | Julian Day | | `WGS84_ELLIPSOID` | Ellipsoid{Float64} | WGS-84 | ## Orbit Conversions ```julia kepler_to_rv(orb) # -> (r::SVector{3}, v::SVector{3}) in meters, m/s kepler_to_sv(orb) # -> OrbitStateVector rv_to_kepler(t, r, v) # -> KeplerianElements sv_to_kepler(sv) # -> KeplerianElements ``` ## Anomaly Conversions (all radians, returns [0, 2π]) ```julia mean_to_eccentric_anomaly(e, M; max_iterations=10, tol=nothing) mean_to_true_anomaly(e, M) eccentric_to_true_anomaly(e, E) true_to_eccentric_anomaly(e, f) true_to_mean_anomaly(e, f) ``` ## Time Utilities ```julia date_to_jd(year, month, day, hour, min, sec) # -> Julian Day jd_to_date(JD) # -> (year, month, day, hour, min, sec) jd_to_gmst(JD) # -> GMST [rad] ```

Frequently asked questions