astro_bary_state

Calculates the barycentric (solar system barycenter) position and velocity vectors
for a given celestial body at a specified time.

Provides access to the 'Astronomy Engine' C library
(<https://github.com/cosinekitty/astronomy>) by Don Cross. The library
calculates positions of the Sun, Moon, and planets, and predicts
astronomical events such as rise/set times, lunar phases, equinoxes,
solstices, eclipses, and transits. It is based on the 'VSOP87' planetary
model and is accurate to within approximately one arcminute. This package
bundles the single-file C source so that other R packages can link against
it via 'LinkingTo' without shipping their own copy.

Mitchell O'Hara-Wild

astronomyengine

R Bindings to the 'Astronomy Engine' C Library

Don Cross

astro_bary_state function

<dl><dt>body</dt>
<dd>Identifier of celestial body (e.g., <code>astro_body["MERCURY"]</code>).</dd>
<dt>time</dt>
<dd>A POSIXct time value.</dd></dl>

Arguments

Barycentric position and velocity vectors — astro_bary_state

<dl>

<dt>body</dt>
<dd>Identifier of celestial body (e.g., <code>astro_body["MERCURY"]</code>).</dd>


<dt>time</dt>
<dd>A POSIXct time value.</dd>

</dl>

astro_bary_state: Barycentric position and velocity vectors

Description

Usage

Value

Arguments

Details

Examples