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 : July 1 to 31 ================================================================= Day R.A. Declination Dist AU V Mag A Diam === ============== =============== ============ ===== ======= 1 3.6215151471 16.7006769078 0.9366388175 -4.12 17.96" 2 3.6953142006 16.9666320024 0.9443311756 -4.11 17.81" 3 3.7694947270 17.2279020320 0.9520027366 -4.11 17.67" 4 3.8440557150 17.4842849019 0.9596531348 -4.10 17.53" 5 3.9189958670 17.7355801874 0.9672819798 -4.10 17.39" 6 3.9943135947 17.9815891544 0.9748888582 -4.09 17.25" 7 4.0700069281 18.2221144592 0.9824733326 -4.09 17.12" 8 4.1460735153 18.4569601315 0.9900349398 -4.08 16.99" 9 4.2225105908 18.6859314210 0.9975731869 -4.08 16.86" 10 4.2993149625 18.9088346696 1.0050875464 -4.08 16.74" 11 4.3764829872 19.1254771164 1.0125774518 -4.07 16.61" 12 4.4540105816 19.3356668636 1.0200422938 -4.07 16.49" 13 4.5318932657 19.5392131382 1.0274814198 -4.06 16.37" 14 4.6101261917 19.7359268490 1.0348941376 -4.06 16.25" 15 4.6887041299 19.9256214030 1.0422797233 -4.06 16.14" 16 4.7676214236 20.1081137072 1.0496374333 -4.05 16.03" 17 4.8468719116 20.2832251540 1.0569665192 -4.05 15.91" 18 4.9264488066 20.4507823694 1.0642662459 -4.04 15.80" 19 5.0063445056 20.6106175219 1.0715359096 -4.04 15.70" 20 5.0865505299 20.7625684716 1.0787748576 -4.04 15.59" 21 5.1670574401 20.9064783718 1.0859825066 -4.03 15.49" 22 5.2478549486 21.0421952479 1.0931583569 -4.03 15.39" 23 5.3289320634 21.1695715095 1.1003020011 -4.03 15.29" 24 5.4102774451 21.2884640536 1.1074131231 -4.03 15.19" 25 5.4918796411 21.3987346481 1.1144914899 -4.02 15.09" 26 5.5737273562 21.5002508427 1.1215369336 -4.02 15.00" 27 5.6558094948 21.5928867522 1.1285493312 -4.02 14.90" 28 5.7381151155 21.6765235998 1.1355285831 -4.01 14.81" 29 5.8206333084 21.7510498322 1.1424745954 -4.01 14.72" 30 5.9033530694 21.8163609277 1.1493872671 -4.01 14.63" 31 5.9862632025 21.8723591019 1.1562664833 -4.01 14.55" =================================================================

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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