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 : February 1 to 28 ================================================================= Day R.A. Declination Dist AU V Mag A Diam === ============== =============== ============ ===== ======= 1 23h 47m 31.92s +0° 45' 49.15" 0.5225545472 -4.58 32.19" 2 23h 50m 10.84s +1° 12' 42.48" 0.5153769962 -4.59 32.63" 3 23h 52m 46.02s +1° 39' 21.53" 0.5082258270 -4.59 33.09" 4 23h 55m 17.35s +2° 05' 45.08" 0.5011032537 -4.60 33.56" 5 23h 57m 44.66s +2° 31' 51.87" 0.4940116974 -4.60 34.05" 6 00h 00m 07.84s +2° 57' 40.59" 0.4869537792 -4.61 34.54" 7 00h 02m 26.71s +3° 23' 09.90" 0.4799323085 -4.61 35.05" 8 00h 04m 41.13s +3° 48' 18.45" 0.4729502694 -4.62 35.56" 9 00h 06m 50.94s +4° 13' 04.81" 0.4660108085 -4.62 36.09" 10 00h 08m 55.95s +4° 37' 27.53" 0.4591172232 -4.62 36.63" 11 00h 10m 56.00s +5° 01' 25.14" 0.4522729529 -4.63 37.19" 12 00h 12m 50.91s +5° 24' 56.10" 0.4454815715 -4.63 37.76" 13 00h 14m 40.49s +5° 47' 58.84" 0.4387467847 -4.63 38.33" 14 00h 16m 24.57s +6° 10' 31.73" 0.4320724309 -4.63 38.93" 15 00h 18m 02.93s +6° 32' 33.09" 0.4254624873 -4.64 39.53" 16 00h 19m 35.39s +6° 54' 01.15" 0.4189210802 -4.64 40.15" 17 00h 21m 01.75s +7° 14' 54.09" 0.4124524968 -4.64 40.78" 18 00h 22m 21.79s +7° 35' 09.99" 0.4060611990 -4.64 41.42" 19 00h 23m 35.31s +7° 54' 46.84" 0.3997518350 -4.63 42.07" 20 00h 24m 42.09s +8° 13' 42.57" 0.3935292509 -4.63 42.74" 21 00h 25m 41.92s +8° 31' 54.99" 0.3873984997 -4.63 43.42" 22 00h 26m 34.59s +8° 49' 21.81" 0.3813648489 -4.62 44.10" 23 00h 27m 19.88s +9° 06' 00.65" 0.3754337860 -4.62 44.80" 24 00h 27m 57.59s +9° 21' 49.04" 0.3696110234 -4.61 45.51" 25 00h 28m 27.51s +9° 36' 44.41" 0.3639025043 -4.61 46.22" 26 00h 28m 49.46s +9° 50' 44.07" 0.3583144152 -4.60 46.94" 27 00h 29m 03.23s +10° 03' 45.26" 0.3528532056 -4.59 47.67" 28 00h 29m 08.68s +10° 15' 45.11" 0.3475256163 -4.58 48.40" =================================================================

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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