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 : August 1 to 31 ================================================================= Day R.A. Declination Dist AU V Mag A Diam === ============== =============== ============ ===== ======= 1 06h 04m 09.67s +21° 55' 08.23" 1.1631121122 -4.00 14.46" 2 06h 09m 09.39s +21° 57' 21.81" 1.1699240049 -4.00 14.38" 3 06h 14m 09.67s +21° 59' 00.94" 1.1767019955 -4.00 14.29" 4 06h 19m 10.47s +22° 00' 05.37" 1.1834459014 -4.00 14.21" 5 06h 24m 11.74s +22° 00' 34.86" 1.1901555206 -3.99 14.13" 6 06h 29m 13.44s +22° 00' 29.19" 1.1968306282 -3.99 14.05" 7 06h 34m 15.51s +21° 59' 48.16" 1.2034709692 -3.99 13.98" 8 06h 39m 17.92s +21° 58' 31.60" 1.2100762492 -3.99 13.90" 9 06h 44m 20.62s +21° 56' 39.35" 1.2166461250 -3.99 13.83" 10 06h 49m 23.57s +21° 54' 11.28" 1.2231801958 -3.98 13.75" 11 06h 54m 26.71s +21° 51' 07.26" 1.2296779991 -3.98 13.68" 12 06h 59m 30.00s +21° 47' 27.21" 1.2361390133 -3.98 13.61" 13 07h 04m 33.41s +21° 43' 11.06" 1.2425626674 -3.98 13.54" 14 07h 09m 36.88s +21° 38' 18.78" 1.2489483575 -3.98 13.47" 15 07h 14m 40.38s +21° 32' 50.37" 1.2552954681 -3.97 13.40" 16 07h 19m 43.85s +21° 26' 45.89" 1.2616033949 -3.97 13.33" 17 07h 24m 47.25s +21° 20' 05.39" 1.2678715665 -3.97 13.27" 18 07h 29m 50.52s +21° 12' 48.99" 1.2740994627 -3.97 13.20" 19 07h 34m 53.63s +21° 04' 56.81" 1.2802866296 -3.97 13.14" 20 07h 39m 56.53s +20° 56' 29.02" 1.2864326883 -3.97 13.08" 21 07h 44m 59.16s +20° 47' 25.78" 1.2925373390 -3.97 13.01" 22 07h 50m 01.49s +20° 37' 47.30" 1.2986003599 -3.96 12.95" 23 07h 55m 03.46s +20° 27' 33.81" 1.3046216004 -3.96 12.89" 24 08h 00m 05.05s +20° 16' 45.53" 1.3106009694 -3.96 12.83" 25 08h 05m 06.21s +20° 05' 22.76" 1.3165384221 -3.96 12.78" 26 08h 10m 06.91s +19° 53' 25.77" 1.3224339449 -3.96 12.72" 27 08h 15m 07.12s +19° 40' 54.89" 1.3282875430 -3.96 12.66" 28 08h 20m 06.82s +19° 27' 50.45" 1.3340992306 -3.96 12.61" 29 08h 25m 05.96s +19° 14' 12.82" 1.3398690239 -3.96 12.55" 30 08h 30m 04.53s +19° 00' 02.36" 1.3455969378 -3.96 12.50" 31 08h 35m 02.50s +18° 45' 19.49" 1.3512829840 -3.95 12.45" =================================================================

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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