Visibility of Luna and Lunar Crescent

.Aliitu& r=sinpUnrlcdp'cosr'costl (2.5.20)
This complcGs ihe der@inarion of dlipric, €qurqid .d Oe hondnIll
@rdid6 of rh. Mor
2.6 COORDINATES OF TI{E SUN
Foi rhe d.t.mimtion of 0E c@rdiDre of rh. Sun on. p@..& in €runy rhe
se say a for lhc @rdi!!re of rhc Moon.
slcFl:
Scldt ple oroh6dvd (Longiru& ed tilirud.). lcal d ..dd rine rhat
lqds to rh. thc egment t &coiding ro thc algolirhm dceiib.d lbove, s:
Julian Dde )451545 Ll
1652t0 I | 55?600000
12.6.1)
Using lhis lire argment lh€ connrudion of d. (m. eriB &enbins rh.
c@rdinates of the Elnh s givd by Br.raSnon & Fdcou (1988) thc h.lie.nrric
coodinales of lhc E nb de obtained lhar ft lder trusfoftcd into fte gre.tdc
c@rdimles ofth. Sun s follosl
SreFl:
For heliohllic dlipric lonsitud. of lh. Flnll' in lirc wit[ (2.2.19) &d
2.2.20 w h!rc:
2^,
"e"(,,
.r^, )
(2.6.2)
2""
"."6"
t r,,l (2.6.1)
55