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 : October 1 to 31 ================================================================= Day R.A. Declination Dist AU V Mag A Diam === ============== =============== ============ ===== ======= 1 11h 03m 17.67s +7° 27' 17.77" 1.5058809055 -3.94 11.17" 2 11h 07m 54.57s +7° 00' 02.24" 1.5101378941 -3.94 11.14" 3 11h 12m 31.05s +6° 32' 33.84" 1.5143496220 -3.94 11.11" 4 11h 17m 07.13s +6° 04' 53.26" 1.5185162564 -3.94 11.08" 5 11h 21m 42.84s +5° 37' 01.16" 1.5226379364 -3.94 11.05" 6 11h 26m 18.23s +5° 08' 58.23" 1.5267147504 -3.94 11.02" 7 11h 30m 53.32s +4° 40' 45.14" 1.5307467132 -3.94 10.99" 8 11h 35m 28.16s +4° 12' 22.56" 1.5347337487 -3.94 10.96" 9 11h 40m 02.78s +3° 43' 51.17" 1.5386756845 -3.94 10.93" 10 11h 44m 37.22s +3° 15' 11.65" 1.5425722621 -3.94 10.90" 11 11h 49m 11.52s +2° 46' 24.71" 1.5464231617 -3.94 10.88" 12 11h 53m 45.71s +2° 17' 31.09" 1.5502280348 -3.94 10.85" 13 11h 58m 19.81s +1° 48' 31.51" 1.5539865368 -3.94 10.82" 14 12h 02m 53.88s +1° 19' 26.71" 1.5576983541 -3.94 10.80" 15 12h 07m 27.93s +0° 50' 17.44" 1.5613632204 -3.94 10.77" 16 12h 12m 02.02s +0° 21' 04.43" 1.5649809245 -3.94 10.75" 17 12h 16m 36.16s -0° 08' 11.56" 1.5685513109 -3.94 10.72" 18 12h 21m 10.40s -0° 37' 29.79" 1.5720742792 -3.94 10.70" 19 12h 25m 44.78s -1° 06' 49.51" 1.5755497817 -3.94 10.68" 20 12h 30m 19.32s -1° 36' 09.99" 1.5789778211 -3.94 10.65" 21 12h 34m 54.09s -2° 05' 30.46" 1.5823584474 -3.94 10.63" 22 12h 39m 29.09s -2° 34' 50.18" 1.5856917536 -3.94 10.61" 23 12h 44m 04.38s -3° 04' 08.39" 1.5889778708 -3.93 10.59" 24 12h 48m 40.00s -3° 33' 24.34" 1.5922169635 -3.93 10.56" 25 12h 53m 15.97s -4° 02' 37.27" 1.5954092259 -3.93 10.54" 26 12h 57m 52.34s -4° 31' 46.40" 1.5985548789 -3.93 10.52" 27 13h 02m 29.14s -5° 00' 50.99" 1.6016541685 -3.93 10.50" 28 13h 07m 06.41s -5° 29' 50.25" 1.6047073629 -3.93 10.48" 29 13h 11m 44.17s -5° 58' 43.43" 1.6077147511 -3.93 10.46" 30 13h 16m 22.48s -6° 27' 29.75" 1.6106766410 -3.93 10.44" 31 13h 21m 01.37s -6° 56' 08.44" 1.6135933575 -3.93 10.42" =================================================================

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

Download PHP Source Code For This Program