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 : June 1 to 30 ================================================================= Day R.A. Declination Dist AU V Mag A Diam === ============== =============== ============ ===== ======= 1 1.5924584832 7.6497165898 0.6987656371 -4.31 24.07" 2 1.6540607275 7.9506380766 0.7067991191 -4.30 23.80" 3 1.7161033805 8.2538723235 0.7148337994 -4.29 23.53" 4 1.7785816592 8.5591697301 0.7228688443 -4.29 23.27" 5 1.8414914385 8.8662833840 0.7309034015 -4.28 23.01" 6 1.9048291742 9.1749686476 0.7389366036 -4.27 22.76" 7 1.9685917509 9.4849824183 0.7469675697 -4.27 22.52" 8 2.0327764645 9.7960830262 0.7549954058 -4.26 22.28" 9 2.0973809273 10.1080297216 0.7630192043 -4.25 22.05" 10 2.1624029977 10.4205822697 0.7710380426 -4.24 21.82" 11 2.2278407486 10.7335007263 0.7790509817 -4.24 21.59" 12 2.2936924103 11.0465450755 0.7870570645 -4.23 21.37" 13 2.3599563431 11.3594749798 0.7950553143 -4.22 21.16" 14 2.4266309690 11.6720493653 0.8030447364 -4.22 20.95" 15 2.4937148390 11.9840267566 0.8110243209 -4.21 20.74" 16 2.5612065962 12.2951653036 0.8189930496 -4.20 20.54" 17 2.6291049923 12.6052232510 0.8269499034 -4.20 20.34" 18 2.6974088654 12.9139594021 0.8348938734 -4.19 20.15" 19 2.7661171197 13.2211337600 0.8428239724 -4.19 19.96" 20 2.8352286267 13.5265079803 0.8507392512 -4.18 19.77" 21 2.9047421000 13.8298457810 0.8586388171 -4.17 19.59" 22 2.9746559677 14.1309131658 0.8665218553 -4.17 19.41" 23 3.0449682036 14.4294779928 0.8743876479 -4.16 19.24" 24 3.1156763411 14.7253096969 0.8822355868 -4.16 19.07" 25 3.1867776106 15.0181790650 0.8900651751 -4.15 18.90" 26 3.2582692579 15.3078587220 0.8978760152 -4.14 18.73" 27 3.3301488191 15.5941238238 0.9056677860 -4.14 18.57" 28 3.4024143634 15.8767531566 0.9134402128 -4.13 18.41" 29 3.4750645268 16.1555297427 0.9211930389 -4.13 18.26" 30 3.5480983550 16.4302407048 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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