API Reference / directionArcs · function

Function: directionArcs()

function directionArcs(
   alpha, 
   delta, 
   ramc, 
   phi): DirectionArcs;

Direct primary-direction arcs (degrees, [0, 360)) of a body at right ascension alpha and declination delta to the four angles, for latitude phi and right ascension of the MC ramc. asc/dsc are null when the body is circumpolar.

Parameters

Parameter	Type
`alpha`	`number`
`delta`	`number`
`ramc`	`number`
`phi`	`number`

Returns

DirectionArcs