astro_search_transit

Finds the first transit of Mercury or Venus after a specified date.
A transit occurs when an inferior planet passes between the Sun and Earth,
with the planet's silhouette visible against 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_search_transit function

<dl><dt>body</dt>
<dd>Integer code for the planet. Use <code>1</code> for Mercury or <code>2</code> for Venus.</dd>
<dt>start_time</dt>
<dd>A <code>POSIXct</code> datetime for starting the search.</dd></dl>

Arguments

Search for a transit of Mercury or Venus — astro_search_transit

<dl>

<dt>body</dt>
<dd>Integer code for the planet. Use <code>1</code> for Mercury or <code>2</code> for Venus.</dd>


<dt>start_time</dt>
<dd>A <code>POSIXct</code> datetime for starting the search.</dd>

</dl>

astro_search_transit: Search for a transit of Mercury or Venus

Description

Usage

Value

Arguments

Examples