VSOP87C Venus Apparent Geocentric Equatorial Ephemeris Demo 2 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 : January 1 to 31 ================================================================= Day R.A. Declination Dist AU V Mag A Diam === ============== =============== ============ ===== ======= 1 22h 01m 34.57s -13° 35' 12.23" 0.7508178911 -4.36 22.40" 2 22h 05m 36.23s -13° 08' 54.67" 0.7434449768 -4.37 22.62" 3 22h 09m 35.69s -12° 42' 22.68" 0.7360644151 -4.37 22.85" 4 22h 13m 32.94s -12° 15' 37.15" 0.7286766305 -4.38 23.08" 5 22h 17m 27.96s -11° 48' 38.96" 0.7212821419 -4.39 23.32" 6 22h 21m 20.74s -11° 21' 28.99" 0.7138815696 -4.40 23.56" 7 22h 25m 11.26s -10° 54' 08.13" 0.7064756371 -4.40 23.81" 8 22h 28m 59.48s -10° 26' 37.27" 0.6990651670 -4.41 24.06" 9 22h 32m 45.41s -9° 58' 57.29" 0.6916510717 -4.42 24.32" 10 22h 36m 29.00s -9° 31' 09.08" 0.6842343394 -4.43 24.58" 11 22h 40m 10.25s -9° 03' 13.55" 0.6768160164 -4.43 24.85" 12 22h 43m 49.11s -8° 35' 11.56" 0.6693971857 -4.44 25.13" 13 22h 47m 25.58s -8° 07' 04.00" 0.6619789460 -4.45 25.41" 14 22h 50m 59.62s -7° 38' 51.72" 0.6545623923 -4.45 25.70" 15 22h 54m 31.20s -7° 10' 35.59" 0.6471486019 -4.46 25.99" 16 22h 58m 00.29s -6° 42' 16.45" 0.6397386280 -4.47 26.29" 17 23h 01m 26.88s -6° 13' 55.13" 0.6323334997 -4.48 26.60" 18 23h 04m 50.91s -5° 45' 32.48" 0.6249342286 -4.48 26.91" 19 23h 08m 12.35s -5° 17' 09.35" 0.6175418183 -4.49 27.24" 20 23h 11m 31.18s -4° 48' 46.58" 0.6101572747 -4.50 27.57" 21 23h 14m 47.34s -4° 20' 25.05" 0.6027816152 -4.51 27.90" 22 23h 18m 00.78s -3° 52' 05.61" 0.5954158759 -4.51 28.25" 23 23h 21m 11.46s -3° 23' 49.16" 0.5880611170 -4.52 28.60" 24 23h 24m 19.32s -2° 55' 36.59" 0.5807184260 -4.53 28.96" 25 23h 27m 24.30s -2° 27' 28.82" 0.5733889203 -4.53 29.33" 26 23h 30m 26.33s -1° 59' 26.80" 0.5660737501 -4.54 29.71" 27 23h 33m 25.33s -1° 31' 31.46" 0.5587741025 -4.55 30.10" 28 23h 36m 21.23s -1° 03' 43.82" 0.5514912108 -4.55 30.50" 29 23h 39m 13.93s -0° 36' 04.86" 0.5442263699 -4.56 30.90" 30 23h 42m 03.35s -0° 08' 35.66" 0.5369809594 -4.57 31.32" 31 23h 44m 49.38s +0° 18' 42.72" 0.5297564723 -4.57 31.75" =================================================================

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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