VSOP87C Venus Apparent Geocentric Equatorial Ephemeris Demo 1 PHP Program by Jay Tanner - 2025

ENTER  Year/Month

Double-Click Within Text Area to Select ALL Text ================================================================= VSOP87C VENUS APPARENT GEOCENTRIC EQUATORIAL EPHEMERIS DEMO Valid For Gregorian Years 1583 AD to 5999 AD ================================================================= VENUS Apparent Geocentric Equatorial Ephemeris For 00h TT on Each Date Year : 2025 (Gregorian Calendar) Month : August 1 to 31 ================================================================= Day R.A. Declination Dist AU V Mag A Diam === ============== =============== ============ ===== ======= 1 6.0693523066 21.9189530995 1.1631121122 -4.00 14.46" 2 6.1526087012 21.9560580244 1.1699240049 -4.00 14.38" 3 6.2360204941 21.9835952956 1.1767019955 -4.00 14.29" 4 6.3195755381 22.0014925437 1.1834459014 -4.00 14.21" 5 6.4032614806 22.0096835283 1.1901555206 -3.99 14.13" 6 6.4870658116 22.0081079985 1.1968306282 -3.99 14.05" 7 6.5709758863 21.9967114804 1.2034709692 -3.99 13.98" 8 6.6549789533 21.9754450249 1.2100762492 -3.99 13.90" 9 6.7390622896 21.9442649927 1.2166461250 -3.99 13.83" 10 6.8232132338 21.9031331201 1.2231801958 -3.98 13.75" 11 6.9074192879 21.8520170150 1.2296779991 -3.98 13.68" 12 6.9916681617 21.7908911015 1.2361390133 -3.98 13.61" 13 7.0759476549 21.7197378684 1.2425626674 -3.98 13.54" 14 7.1602455477 21.6385489479 1.2489483575 -3.98 13.47" 15 7.2445494333 21.5473257441 1.2552954681 -3.97 13.40" 16 7.3288465660 21.4460794709 1.2616033949 -3.97 13.33" 17 7.4131238458 21.3348306052 1.2678715665 -3.97 13.27" 18 7.4973679289 21.2136079876 1.2740994627 -3.97 13.20" 19 7.5815653165 21.0824480320 1.2802866296 -3.97 13.14" 20 7.6657026790 20.9413938387 1.2864326883 -3.97 13.08" 21 7.7497670433 20.7904947978 1.2925373390 -3.97 13.01" 22 7.8337460164 20.6298064216 1.2986003599 -3.96 12.95" 23 7.9176279473 20.4593904252 1.3046216004 -3.96 12.89" 24 8.0014019807 20.2793149661 1.3106009694 -3.96 12.83" 25 8.0850580050 20.0896548970 1.3165384221 -3.96 12.78" 26 8.1685866017 19.8904917255 1.3224339449 -3.96 12.72" 27 8.2519789635 19.6819134055 1.3282875430 -3.96 12.66" 28 8.3352268079 19.4640140511 1.3340992306 -3.96 12.61" 29 8.4183223756 19.2368934647 1.3398690239 -3.96 12.55" 30 8.5012583814 19.0006568578 1.3455969378 -3.96 12.50" 31 8.5840280447 18.7554144105 1.3512829840 -3.95 12.45" =================================================================

SOME GENERAL INFORMATION ABOUT THIS VSOP87 VENUS EPHEMERIS DEMO The purpose of this program is to compute an apparent geocentric equatorial Venus ephemeris for any Gregorian calendar date within the ephemeris span from 1583 to 5999 AD based on the VSOP87 theory. ------- CAVEAT: Be cautious when entering the year/month values. This program is only a simplified demo and does NOT do extensive error checking for invalid arguments. Valid input arguments should return valid results. Whenever possible, compare against known check values or against another source of similar VSOP87C computations for consistency. ---------------- TIME SCALE USED: The program uses the system clock for the time (UTC). However, the actual time scale used is the TT scale. Without any Delta T adjustment, UTC is being treated as equivalent to TT. --------------------------------------------------------------------------- SOURCE CODE: There is a link below to the complete PHP source code for this program.

Program by Jay Tanner Revised: Thursday, January 01, 1970 at 12:00:00 AM UTC

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