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 : March 1 to 31 ================================================================= Day R.A. Declination Dist AU V Mag A Diam === ============== =============== ============ ===== ======= 1 0.4849016563 10.4446399511 0.3423387129 -4.57 49.13" 2 0.4816661870 10.6080718734 0.3372999144 -4.55 49.87" 3 0.4760106674 10.7519913952 0.3324170097 -4.54 50.60" 4 0.4679163159 10.8755661772 0.3276981522 -4.52 51.33" 5 0.4573752242 10.9779781280 0.3231518297 -4.50 52.05" 6 0.4443921586 11.0584374490 0.3187868138 -4.49 52.76" 7 0.4289863491 11.1161986375 0.3146120927 -4.46 53.46" 8 0.4111931539 11.1505775984 0.3106367962 -4.44 54.15" 9 0.3910655023 11.1609694429 0.3068701175 -4.42 54.81" 10 0.3686750538 11.1468666859 0.3033212330 -4.39 55.45" 11 0.3441130877 11.1078776541 0.2999992201 -4.37 56.07" 12 0.3174910585 11.0437448443 0.2969129719 -4.34 56.65" 13 0.2889407767 10.9543626095 0.2940711076 -4.31 57.20" 14 0.2586141871 10.8397935454 0.2914818824 -4.28 57.70" 15 0.2266826568 10.7002826898 0.2891530970 -4.25 58.17" 16 0.1933358745 10.5362692876 0.2870920088 -4.21 58.59" 17 0.1587802792 10.3483952217 0.2853052473 -4.18 58.95" 18 0.1232371016 10.1375097437 0.2837987329 -4.15 59.27" 19 0.0869400018 9.9046697502 0.2825776011 -4.12 59.52" 20 0.0501323585 9.6511351988 0.2816461349 -4.10 59.72" 21 0.0130642409 9.3783592016 0.2810077069 -4.07 59.86" 22 23.9759892236 9.0879733479 0.2806647339 -4.06 59.93" 23 23.9391610362 8.7817678296 0.2806186444 -4.05 59.94" 24 23.9028301927 8.4616671602 0.2808698620 -4.05 59.89" 25 23.8672406650 8.1297018673 0.2814178070 -4.06 59.77" 26 23.8326268075 7.7879779117 0.2822609209 -4.07 59.59" 27 23.7992106006 7.4386445871 0.2833967163 -4.09 59.35" 28 23.7671994174 7.0838632925 0.2848218510 -4.12 59.05" 29 23.7367843203 6.7257781799 0.2865322204 -4.14 58.70" 30 23.7081388521 6.3664894639 0.2885230544 -4.17 58.30" 31 23.6814183344 6.0080307675 0.2907890059 -4.20 57.84" =================================================================
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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