API Reference / lunarEclipseLocal · function

Function: lunarEclipseLocal()

function lunarEclipseLocal(
   engine, 
   jd, 
   latDeg, 
   lonEastDeg): LunarLocal;

Local visibility of a lunar eclipse: a lunar eclipse happens at the same instant for the whole Earth, so "local circumstances" is simply whether the Moon is up. Pass a contact time (e.g. LunarEclipse.tMax or a phase boundary) to learn whether that phase is visible from a place.

Parameters

Parameter	Type	Description
`engine`	`Engine`	The engine used to evaluate positions.
`jd`	`number`	Instant to evaluate, Julian Day (UT).
`latDeg`	`number`	Observer latitude in degrees (north positive).
`lonEastDeg`	`number`	Observer longitude in degrees (east positive).

Returns

LunarLocal

LunarLocal with the Moon's altitude and a visibility flag.

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