noun
- plural of perilune; the points in lunar orbits that are closest to the Moon’s surface
Usage: astronomy; technical
Examples
- The spacecraft’s perilunes were carefully calculated to optimize fuel consumption.
- Scientists studied the satellite’s perilunes to understand orbital decay.
- Multiple perilunes were plotted on the mission trajectory chart.
- The probe’s perilunes brought it within 100 kilometers of the lunar surface.
- Engineers monitored the changing perilunes throughout the mission.
- Data collection was scheduled during the spacecraft’s perilunes for maximum resolution.