Ephemerid

Description:Nine main astronomical programs included in a directory to calculate SEASON begin (exact or fast), deltaT (TT-UT), —>WK.D (week day), JD—> (date to Julian Day), JD—> (reverse), —>epsilon (Earth axial tilt), —>TROPIC.YR —>SID(Sidereal Time), with great precision according to Astronomical Algorithms, 2nd edition, by Jean Meeus. The program calculates automatically also: M (µ Anomaly of the Sun), M´ (µ Anomaly of the Moo), F (µArg LatMoon), D (µElong Moon from Sun), deta¥ (Nutation in longit longitude), deltaEpsilon (Nutation in obliquity), Oméga (µLongAscendNode Moon). It also includes the equation of time according to abridged version VSOP1987, together with alpha Sun's Ascension and delta Sun's Declination, both with errors less than a fraction of a second. It calculates also: L0 (Sun geometric mean longitude), C (Sun equation Centre), O/ß (Sun true geocentric longitude/latitude), Lamda (Sun apparent Longitude), nu (Sun true anomaly) and R (distance Sun centre to Earth centre). There are also two small conversion programs to calculate T->Date (T in hundred of centuries after 2000 back to the original date and hour) and —>Teph (Terrestrial time to Ephemerid time).
Filename:ephemerid.zip
ID:9248
Current version:9
Author:Gil Campart
Downloaded file size:23,001 bytes
Size on calculator:38 KB
Platforms:49/50  
User rating:Not yet rated (you must be logged in to vote)
Primary category:Science/Astronomy
Languages:ENG  
File date:2025-01-25 03:06:45
Creation date:2025-01-25
Source code:Not included
Download count:314
Version history:2025-01-25: Updated to version 9
2024-12-29: Updated to version 5e
2023-05-07: Updated to version 5d
2022-07-31: Updated to version Xi3c
2021-12-31: Updated to version Xi2c
2021-11-24: Updated to version Xi
2021-04-10: Updated to version 7.0
2021-01-17: Added to site
Archive contents:
  Length      Date    Time    Name
---------  ---------- -----   ----
    38770  2025-01-25 03:06   ephemerid.9.hp
    20852  2025-01-24 17:32   ephemerid.html
---------                     -------
    59622                     2 files
Screenshot:Screenshot
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Part of the HP Calculator Archive,
Copyright 1997-2025 Eric Rechlin.