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 : May 1 to 31 ================================================================= Day R.A. Declination Dist AU V Mag A Diam === ============== =============== ============ ===== ======= 1 23h 58m 49.68s +1° 04' 04.10" 0.4573517465 -4.52 36.78" 2 00h 01m 10.93s +1° 08' 48.61" 0.4646016598 -4.52 36.20" 3 00h 03m 36.46s +1° 14' 17.15" 0.4719122062 -4.51 35.64" 4 00h 06m 06.11s +1° 20' 28.37" 0.4792802782 -4.51 35.10" 5 00h 08m 39.72s +1° 27' 20.98" 0.4867028621 -4.50 34.56" 6 00h 11m 17.11s +1° 34' 53.68" 0.4941770297 -4.50 34.04" 7 00h 13m 58.14s +1° 43' 05.18" 0.5016999361 -4.49 33.53" 8 00h 16m 42.68s +1° 51' 54.22" 0.5092688169 -4.49 33.03" 9 00h 19m 30.58s +2° 01' 19.56" 0.5168809862 -4.48 32.54" 10 00h 22m 21.72s +2° 11' 19.93" 0.5245338326 -4.47 32.07" 11 00h 25m 15.97s +2° 21' 54.10" 0.5322248163 -4.47 31.60" 12 00h 28m 13.23s +2° 33' 00.85" 0.5399514655 -4.46 31.15" 13 00h 31m 13.38s +2° 44' 38.95" 0.5477113741 -4.45 30.71" 14 00h 34m 16.31s +2° 56' 47.20" 0.5555021979 -4.45 30.28" 15 00h 37m 21.93s +3° 09' 24.39" 0.5633216522 -4.44 29.86" 16 00h 40m 30.14s +3° 22' 29.32" 0.5711675100 -4.43 29.45" 17 00h 43m 40.85s +3° 36' 00.80" 0.5790376018 -4.42 29.05" 18 00h 46m 53.97s +3° 49' 57.65" 0.5869298177 -4.42 28.66" 19 00h 50m 09.43s +4° 04' 18.68" 0.5948421100 -4.41 28.28" 20 00h 53m 27.14s +4° 19' 02.74" 0.6027724975 -4.40 27.91" 21 00h 56m 47.04s +4° 34' 08.66" 0.6107190712 -4.39 27.54" 22 01h 00m 09.04s +4° 49' 35.29" 0.6186800043 -4.39 27.19" 23 01h 03m 33.10s +5° 05' 21.49" 0.6266535685 -4.38 26.84" 24 01h 06m 59.15s +5° 21' 26.16" 0.6346381544 -4.37 26.50" 25 01h 10m 27.12s +5° 37' 48.17" 0.6426322931 -4.36 26.17" 26 01h 13m 56.97s +5° 54' 26.44" 0.6506346724 -4.35 25.85" 27 01h 17m 28.65s +6° 11' 19.90" 0.6586441385 -4.35 25.54" 28 01h 21m 02.10s +6° 28' 27.49" 0.6666596821 -4.34 25.23" 29 01h 24m 37.28s +6° 45' 48.19" 0.6746804083 -4.33 24.93" 30 01h 28m 14.15s +7° 03' 20.99" 0.6827054973 -4.32 24.64" 31 01h 31m 52.69s +7° 21' 04.90" 0.6907341661 -4.32 24.35" =================================================================

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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