astro_search_max_elongation

Finds the next date and time when Mercury or Venus reaches its maximum angle
from the Sun as seen from the Earth. Maximum elongation events are the best
opportunities for observing these inner planets.

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_search_max_elongation function

<dl><dt>body</dt>
<dd>Integer code for the celestial body. Must be Mercury (3) or
Venus (2). Other values will fail.</dd>
<dt>start_time</dt>
<dd>A POSIXct date-time value indicating the search start time.
The maximum elongation event found will be the first one occurring after
this time.</dd></dl>

Arguments

Search for maximum elongation — astro_search_max_elongation

<dl>

<dt>body</dt>
<dd>Integer code for the celestial body. Must be Mercury (3) or
Venus (2). Other values will fail.</dd>


<dt>start_time</dt>
<dd>A POSIXct date-time value indicating the search start time.
The maximum elongation event found will be the first one occurring after
this time.</dd>

</dl>

astro_search_max_elongation: Search for maximum elongation

Description

Usage

Value

Arguments

Examples