Search for the next transit of Mercury or Venus — astro_next_transit • astronomyengine

Finds the next transit of Mercury or Venus after a previous transit. Call this repeatedly to find successive transits.

Usage

astro_next_transit(body, prev_transit_time)

Arguments

body: Integer code for the planet. Use 1 for Mercury or 2 for Venus.
prev_transit_time: A POSIXct datetime from a previous transit result.

Value

A list with elements:

start: Start time of the transit (POSIXct).
peak: Time of closest approach (POSIXct).
finish: End time of the transit (POSIXct).
separation: Angular separation at peak in arcminutes.

Examples

start <- as.POSIXct("2025-01-01", tz = "UTC")
transit1 <- astro_search_transit(astro_body["MERCURY"], start)
transit2 <- astro_next_transit(astro_body["MERCURY"], transit1$peak)