astro_angle_from_sun

Returns the angle between a celestial body and the Sun, as seen from the
center of the Earth. This angle helps determine how easy it is to see the
body away from the glare of the Sun.

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_angle_from_sun function

<dl><dt>body</dt>
<dd>Integer code identifying the celestial body. Must not be Earth.</dd>
<dt>time</dt>
<dd>A POSIXct date-time value indicating the observation time.</dd></dl>

Arguments

Angle from the Sun — astro_angle_from_sun

<dl>

<dt>body</dt>
<dd>Integer code identifying the celestial body. Must not be Earth.</dd>


<dt>time</dt>
<dd>A POSIXct date-time value indicating the observation time.</dd>

</dl>

astro_angle_from_sun: Angle from the Sun

Description

Usage

Value

Arguments

Examples