VSOP87C Venus Apparent Geocentric Equatorial Ephemeris Demo 2 PHP Program by Jay Tanner - 2026

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 : 2026 (Gregorian Calendar) Month : September 1 to 30 ================================================================= Day R.A. Declination Dist AU V Mag A Diam === ============== =============== ============ ===== ======= 1 13h 20m 37.65s -12° 08' 58.24" 0.5543248356 -4.45 30.34" 2 13h 23m 26.05s -12° 33' 45.82" 0.5466491594 -4.46 30.77" 3 13h 26m 11.81s -12° 58' 13.60" 0.5390053597 -4.47 31.20" 4 13h 28m 54.81s -13° 22' 20.84" 0.5313951178 -4.47 31.65" 5 13h 31m 34.95s -13° 46' 06.74" 0.5238201141 -4.48 32.11" 6 13h 34m 12.09s -14° 09' 30.52" 0.5162820397 -4.49 32.58" 7 13h 36m 46.09s -14° 32' 31.31" 0.5087826148 -4.50 33.06" 8 13h 39m 16.82s -14° 55' 08.22" 0.5013236148 -4.50 33.55" 9 13h 41m 44.12s -15° 17' 20.32" 0.4939069020 -4.51 34.05" 10 13h 44m 07.83s -15° 39' 06.63" 0.4865344615 -4.51 34.57" 11 13h 46m 27.77s -16° 00' 26.13" 0.4792084350 -4.52 35.10" 12 13h 48m 43.77s -16° 21' 17.74" 0.4719311511 -4.53 35.64" 13 13h 50m 55.63s -16° 41' 40.34" 0.4647051454 -4.53 36.19" 14 13h 53m 03.15s -17° 01' 32.78" 0.4575331723 -4.54 36.76" 15 13h 55m 06.13s -17° 20' 53.81" 0.4504182086 -4.54 37.34" 16 13h 57m 04.33s -17° 39' 42.16" 0.4433634526 -4.55 37.94" 17 13h 58m 57.54s -17° 57' 56.49" 0.4363723212 -4.55 38.54" 18 14h 00m 45.53s -18° 15' 35.39" 0.4294484498 -4.55 39.16" 19 14h 02m 28.04s -18° 32' 37.38" 0.4225956938 -4.55 39.80" 20 14h 04m 04.83s -18° 49' 00.91" 0.4158181338 -4.56 40.45" 21 14h 05m 35.66s -19° 04' 44.35" 0.4091200827 -4.56 41.11" 22 14h 07m 00.27s -19° 19' 46.01" 0.4025060936 -4.56 41.79" 23 14h 08m 18.41s -19° 34' 04.09" 0.3959809678 -4.56 42.48" 24 14h 09m 29.81s -19° 47' 36.73" 0.3895497595 -4.56 43.18" 25 14h 10m 34.22s -20° 00' 21.96" 0.3832177767 -4.56 43.89" 26 14h 11m 31.41s -20° 12' 17.77" 0.3769905763 -4.56 44.61" 27 14h 12m 21.12s -20° 23' 22.03" 0.3708739511 -4.55 45.35" 28 14h 13m 03.13s -20° 33' 32.56" 0.3648739122 -4.55 46.10" 29 14h 13m 37.23s -20° 42' 47.13" 0.3589966675 -4.54 46.85" 30 14h 14m 03.21s -20° 51' 03.38" 0.3532486015 -4.54 47.61" =================================================================

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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