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 : September 1 to 30 ================================================================= Day R.A. Declination Dist AU V Mag A Diam === ============== =============== ============ ===== ======= 1 08h 39m 59.85s +18° 30' 04.61" 1.3569271700 -3.95 12.40" 2 08h 44m 56.56s +18° 14' 18.15" 1.3625294979 -3.95 12.35" 3 08h 49m 52.60s +17° 58' 00.56" 1.3680899614 -3.95 12.29" 4 08h 54m 47.97s +17° 41' 12.28" 1.3736085409 -3.95 12.25" 5 08h 59m 42.65s +17° 23' 53.80" 1.3790851935 -3.95 12.20" 6 09h 04m 36.62s +17° 06' 05.57" 1.3845198394 -3.95 12.15" 7 09h 09m 29.87s +16° 47' 48.08" 1.3899123460 -3.95 12.10" 8 09h 14m 22.40s +16° 29' 01.82" 1.3952625126 -3.95 12.06" 9 09h 19m 14.21s +16° 09' 47.29" 1.4005700598 -3.95 12.01" 10 09h 24m 05.30s +15° 50' 05.00" 1.4058346298 -3.95 11.96" 11 09h 28m 55.65s +15° 29' 55.48" 1.4110557971 -3.95 11.92" 12 09h 33m 45.28s +15° 09' 19.29" 1.4162330903 -3.95 11.88" 13 09h 38m 34.19s +14° 48' 17.00" 1.4213660195 -3.95 11.83" 14 09h 43m 22.37s +14° 26' 49.22" 1.4264541049 -3.94 11.79" 15 09h 48m 09.83s +14° 04' 56.55" 1.4314969009 -3.94 11.75" 16 09h 52m 56.56s +13° 42' 39.63" 1.4364940138 -3.94 11.71" 17 09h 57m 42.58s +13° 19' 59.08" 1.4414451118 -3.94 11.67" 18 10h 02m 27.87s +12° 56' 55.55" 1.4463499297 -3.94 11.63" 19 10h 07m 12.46s +12° 33' 29.68" 1.4512082698 -3.94 11.59" 20 10h 11m 56.35s +12° 09' 42.11" 1.4560199994 -3.94 11.55" 21 10h 16m 39.55s +11° 45' 33.50" 1.4607850473 -3.94 11.51" 22 10h 21m 22.08s +11° 21' 04.52" 1.4655033964 -3.94 11.48" 23 10h 26m 03.95s +10° 56' 15.82" 1.4701750756 -3.94 11.44" 24 10h 30m 45.19s +10° 31' 08.07" 1.4748001508 -3.94 11.41" 25 10h 35m 25.80s +10° 05' 41.96" 1.4793787164 -3.94 11.37" 26 10h 40m 05.81s +9° 39' 58.16" 1.4839108883 -3.94 11.34" 27 10h 44m 45.25s +9° 13' 57.34" 1.4883967991 -3.94 11.30" 28 10h 49m 24.13s +8° 47' 40.21" 1.4928365947 -3.94 11.27" 29 10h 54m 02.47s +8° 21' 07.44" 1.4972304322 -3.94 11.23" 30 10h 58m 40.31s +7° 54' 19.73" 1.5015784779 -3.94 11.20" =================================================================

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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