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 : January 1 to 31 ================================================================= Day R.A. Declination Dist AU V Mag A Diam === ============== =============== ============ ===== ======= 1 18h 40m 13.30s -23° 37' 20.74" 1.7099588610 -3.92 09.84" 2 18h 45m 42.64s -23° 33' 58.32" 1.7102148823 -3.92 09.84" 3 18h 51m 11.65s -23° 29' 52.10" 1.7104330672 -3.92 09.83" 4 18h 56m 40.27s -23° 25' 02.25" 1.7106135218 -3.92 09.83" 5 19h 02m 08.43s -23° 19' 28.96" 1.7107562457 -3.92 09.83" 6 19h 07m 36.07s -23° 13' 12.44" 1.7108611428 -3.92 09.83" 7 19h 13m 03.16s -23° 06' 12.93" 1.7109280443 -3.92 09.83" 8 19h 18m 29.62s -22° 58' 30.71" 1.7109567347 -3.92 09.83" 9 19h 23m 55.42s -22° 50' 06.08" 1.7109469765 -3.92 09.83" 10 19h 29m 20.49s -22° 40' 59.41" 1.7108985274 -3.92 09.83" 11 19h 34m 44.80s -22° 31' 11.06" 1.7108111504 -3.92 09.83" 12 19h 40m 08.29s -22° 20' 41.45" 1.7106846177 -3.92 09.83" 13 19h 45m 30.92s -22° 09' 31.03" 1.7105187116 -3.92 09.83" 14 19h 50m 52.64s -21° 57' 40.26" 1.7103132251 -3.92 09.83" 15 19h 56m 13.41s -21° 45' 09.64" 1.7100679619 -3.92 09.84" 16 20h 01m 33.19s -21° 31' 59.70" 1.7097827387 -3.92 09.84" 17 20h 06m 51.95s -21° 18' 10.98" 1.7094573875 -3.92 09.84" 18 20h 12m 09.64s -21° 03' 44.05" 1.7090917604 -3.92 09.84" 19 20h 17m 26.23s -20° 48' 39.51" 1.7086857354 -3.92 09.84" 20 20h 22m 41.69s -20° 32' 57.95" 1.7082392237 -3.92 09.85" 21 20h 27m 56.00s -20° 16' 40.01" 1.7077521777 -3.92 09.85" 22 20h 33m 09.12s -19° 59' 46.32" 1.7072245965 -3.92 09.85" 23 20h 38m 21.04s -19° 42' 17.55" 1.7066565301 -3.92 09.86" 24 20h 43m 31.73s -19° 24' 14.36" 1.7060480797 -3.92 09.86" 25 20h 48m 41.19s -19° 05' 37.44" 1.7053993946 -3.92 09.86" 26 20h 53m 49.41s -18° 46' 27.50" 1.7047106672 -3.91 09.87" 27 20h 58m 56.36s -18° 26' 45.25" 1.7039821239 -3.91 09.87" 28 21h 04m 02.06s -18° 06' 31.41" 1.7032140116 -3.91 09.88" 29 21h 09m 06.49s -17° 45' 46.74" 1.7024065795 -3.91 09.88" 30 21h 14m 09.65s -17° 24' 31.96" 1.7015600561 -3.91 09.88" 31 21h 19m 11.54s -17° 02' 47.83" 1.7006746236 -3.91 09.89" =================================================================

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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