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 : June 1 to 30 ================================================================= Day R.A. Declination Dist AU V Mag A Diam === ============== =============== ============ ===== ======= 1 01h 35m 32.85s +7° 38' 58.98" 0.6987656371 -4.31 24.07" 2 01h 39m 14.62s +7° 57' 02.30" 0.7067991191 -4.30 23.80" 3 01h 42m 57.97s +8° 15' 13.94" 0.7148337994 -4.29 23.53" 4 01h 46m 42.89s +8° 33' 33.01" 0.7228688443 -4.29 23.27" 5 01h 50m 29.37s +8° 51' 58.62" 0.7309034015 -4.28 23.01" 6 01h 54m 17.39s +9° 10' 29.89" 0.7389366036 -4.27 22.76" 7 01h 58m 06.93s +9° 29' 05.94" 0.7469675697 -4.27 22.52" 8 02h 01m 57.99s +9° 47' 45.90" 0.7549954058 -4.26 22.28" 9 02h 05m 50.57s +10° 06' 28.91" 0.7630192043 -4.25 22.05" 10 02h 09m 44.65s +10° 25' 14.10" 0.7710380426 -4.24 21.82" 11 02h 13m 40.23s +10° 44' 00.60" 0.7790509817 -4.24 21.59" 12 02h 17m 37.29s +11° 02' 47.56" 0.7870570645 -4.23 21.37" 13 02h 21m 35.84s +11° 21' 34.11" 0.7950553143 -4.22 21.16" 14 02h 25m 35.87s +11° 40' 19.38" 0.8030447364 -4.22 20.95" 15 02h 29m 37.37s +11° 59' 02.50" 0.8110243209 -4.21 20.74" 16 02h 33m 40.34s +12° 17' 42.60" 0.8189930496 -4.20 20.54" 17 02h 37m 44.78s +12° 36' 18.80" 0.8269499034 -4.20 20.34" 18 02h 41m 50.67s +12° 54' 50.25" 0.8348938734 -4.19 20.15" 19 02h 45m 58.02s +13° 13' 16.08" 0.8428239724 -4.19 19.96" 20 02h 50m 06.82s +13° 31' 35.43" 0.8507392512 -4.18 19.77" 21 02h 54m 17.07s +13° 49' 47.44" 0.8586388171 -4.17 19.59" 22 02h 58m 28.76s +14° 07' 51.29" 0.8665218553 -4.17 19.41" 23 03h 02m 41.89s +14° 25' 46.12" 0.8743876479 -4.16 19.24" 24 03h 06m 56.44s +14° 43' 31.11" 0.8822355868 -4.16 19.07" 25 03h 11m 12.40s +15° 01' 05.44" 0.8900651751 -4.15 18.90" 26 03h 15m 29.77s +15° 18' 28.29" 0.8978760152 -4.14 18.73" 27 03h 19m 48.54s +15° 35' 38.85" 0.9056677860 -4.14 18.57" 28 03h 24m 08.69s +15° 52' 36.31" 0.9134402128 -4.13 18.41" 29 03h 28m 30.23s +16° 09' 19.91" 0.9211930389 -4.13 18.26" 30 03h 32m 53.15s +16° 25' 48.87" 0.9289260016 -4.12 18.11" =================================================================

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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