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 : March 1 to 31 ================================================================= Day R.A. Declination Dist AU V Mag A Diam === ============== =============== ============ ===== ======= 1 00h 29m 05.65s +10° 26' 40.70" 0.3423387129 -4.57 49.13" 2 00h 28m 54.00s +10° 36' 29.06" 0.3372999144 -4.55 49.87" 3 00h 28m 33.64s +10° 45' 07.17" 0.3324170097 -4.54 50.60" 4 00h 28m 04.50s +10° 52' 32.04" 0.3276981522 -4.52 51.33" 5 00h 27m 26.55s +10° 58' 40.72" 0.3231518297 -4.50 52.05" 6 00h 26m 39.81s +11° 03' 30.37" 0.3187868138 -4.49 52.76" 7 00h 25m 44.35s +11° 06' 58.32" 0.3146120927 -4.46 53.46" 8 00h 24m 40.30s +11° 09' 02.08" 0.3106367962 -4.44 54.15" 9 00h 23m 27.84s +11° 09' 39.49" 0.3068701175 -4.42 54.81" 10 00h 22m 07.23s +11° 08' 48.72" 0.3033212330 -4.39 55.45" 11 00h 20m 38.81s +11° 06' 28.36" 0.2999992201 -4.37 56.07" 12 00h 19m 02.97s +11° 02' 37.48" 0.2969129719 -4.34 56.65" 13 00h 17m 20.19s +10° 57' 15.71" 0.2940711076 -4.31 57.20" 14 00h 15m 31.01s +10° 50' 23.26" 0.2914818824 -4.28 57.70" 15 00h 13m 36.06s +10° 42' 01.02" 0.2891530970 -4.25 58.17" 16 00h 11m 36.01s +10° 32' 10.57" 0.2870920088 -4.21 58.59" 17 00h 09m 31.61s +10° 20' 54.22" 0.2853052473 -4.18 58.95" 18 00h 07m 23.65s +10° 08' 15.04" 0.2837987329 -4.15 59.27" 19 00h 05m 12.98s +9° 54' 16.81" 0.2825776011 -4.12 59.52" 20 00h 03m 00.48s +9° 39' 04.09" 0.2816461349 -4.10 59.72" 21 00h 00m 47.03s +9° 22' 42.09" 0.2810077069 -4.07 59.86" 22 23h 58m 33.56s +9° 05' 16.70" 0.2806647339 -4.06 59.93" 23 23h 56m 20.98s +8° 46' 54.36" 0.2806186444 -4.05 59.94" 24 23h 54m 10.19s +8° 27' 42.00" 0.2808698620 -4.05 59.89" 25 23h 52m 02.07s +8° 07' 46.93" 0.2814178070 -4.06 59.77" 26 23h 49m 57.46s +7° 47' 16.72" 0.2822609209 -4.07 59.59" 27 23h 47m 57.16s +7° 26' 19.12" 0.2833967163 -4.09 59.35" 28 23h 46m 01.92s +7° 05' 01.91" 0.2848218510 -4.12 59.05" 29 23h 44m 12.42s +6° 43' 32.80" 0.2865322204 -4.14 58.70" 30 23h 42m 29.30s +6° 21' 59.36" 0.2885230544 -4.17 58.30" 31 23h 40m 53.11s +6° 00' 28.91" 0.2907890059 -4.20 57.84" =================================================================

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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