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Time of the seasons
02-24-2023, 12:02 PM
Post: #4
RE: Time of the seasons
My reason of my request was because
I try to reproduce the Meeus' algorithm to get the June solstice for the year 1962,with correct answer in Terrestrial Time or (Terrestrial) Dynamical Time within 2-4 seconds.

I work out author's example 27.b (pages 180-181),
using the tables given in his book at pages 418-421.

I get the following results on my HP50G:


:JDE0: 2437837.38588 <Jean Meeus... 35889>
tau = (JDEO-2451545)/365230
:SL0: 176069483.423
:SL1: 628332128985.
:SL2: 47714.5774468
:SL3: -192.115254877
:SL4: -109.4139133
:SL5: -.999998731728
'(SL0+SL1*tau+SL2*tau^2+SL3*tau^3+SL4*tau^4+SL5*tau^5)/100000000'
:L[rad]: -234.048595755 :
L[d.d]: 270.0032623
:R: 1.01630134777

with these L and R values diverging slightly
from the ones given in the book on the top of page 181.
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Messages In This Thread
Time of the seasons - cdeaglejr - 09-22-2022, 06:25 PM
RE: Time of the seasons - Gil - 02-19-2023, 12:43 AM
RE: Time of the seasons - cdeaglejr - 02-24-2023, 10:36 AM
RE: Time of the seasons - Gil - 02-24-2023 12:02 PM
RE: Time of the seasons - Gil - 02-24-2023, 12:13 PM
RE: Time of the seasons - Giuseppe Donnini - 02-24-2023, 06:43 PM
RE: Time of the seasons - Gil - 02-24-2023, 09:57 PM



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