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 : July 1 to 31 ================================================================= Day R.A. Declination Dist AU V Mag A Diam === ============== =============== ============ ===== ======= 1 03h 37m 17.45s +16° 42' 02.44" 0.9366388175 -4.12 17.96" 2 03h 41m 43.13s +16° 57' 59.88" 0.9443311756 -4.11 17.81" 3 03h 46m 10.18s +17° 13' 40.45" 0.9520027366 -4.11 17.67" 4 03h 50m 38.60s +17° 29' 03.43" 0.9596531348 -4.10 17.53" 5 03h 55m 08.38s +17° 44' 08.09" 0.9672819798 -4.10 17.39" 6 03h 59m 39.53s +17° 58' 53.72" 0.9748888582 -4.09 17.25" 7 04h 04m 12.03s +18° 13' 19.61" 0.9824733326 -4.09 17.12" 8 04h 08m 45.87s +18° 27' 25.06" 0.9900349398 -4.08 16.99" 9 04h 13m 21.04s +18° 41' 09.35" 0.9975731869 -4.08 16.86" 10 04h 17m 57.53s +18° 54' 31.80" 1.0050875464 -4.08 16.74" 11 04h 22m 35.34s +19° 07' 31.72" 1.0125774518 -4.07 16.61" 12 04h 27m 14.44s +19° 20' 08.40" 1.0200422938 -4.07 16.49" 13 04h 31m 54.82s +19° 32' 21.17" 1.0274814198 -4.06 16.37" 14 04h 36m 36.45s +19° 44' 09.34" 1.0348941376 -4.06 16.25" 15 04h 41m 19.34s +19° 55' 32.24" 1.0422797233 -4.06 16.14" 16 04h 46m 03.44s +20° 06' 29.21" 1.0496374333 -4.05 16.03" 17 04h 50m 48.74s +20° 16' 59.61" 1.0569665192 -4.05 15.91" 18 04h 55m 35.22s +20° 27' 02.82" 1.0642662459 -4.04 15.80" 19 05h 00m 22.84s +20° 36' 38.22" 1.0715359096 -4.04 15.70" 20 05h 05m 11.58s +20° 45' 45.25" 1.0787748576 -4.04 15.59" 21 05h 10m 01.41s +20° 54' 23.32" 1.0859825066 -4.03 15.49" 22 05h 14m 52.28s +21° 02' 31.90" 1.0931583569 -4.03 15.39" 23 05h 19m 44.16s +21° 10' 10.46" 1.1003020011 -4.03 15.29" 24 05h 24m 37.00s +21° 17' 18.47" 1.1074131231 -4.03 15.19" 25 05h 29m 30.77s +21° 23' 55.44" 1.1144914899 -4.02 15.09" 26 05h 34m 25.42s +21° 30' 00.90" 1.1215369336 -4.02 15.00" 27 05h 39m 20.91s +21° 35' 34.39" 1.1285493312 -4.02 14.90" 28 05h 44m 17.21s +21° 40' 35.48" 1.1355285831 -4.01 14.81" 29 05h 49m 14.28s +21° 45' 03.78" 1.1424745954 -4.01 14.72" 30 05h 54m 12.07s +21° 48' 58.90" 1.1493872671 -4.01 14.63" 31 05h 59m 10.55s +21° 52' 20.49" 1.1562664833 -4.01 14.55" =================================================================

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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