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 : February 1 to 28 ================================================================= Day R.A. Declination Dist AU V Mag A Diam === ============== =============== ============ ===== ======= 1 21h 24m 12.17s -16° 40' 35.10" 1.6997503946 -3.91 09.90" 2 21h 29m 11.54s -16° 17' 54.49" 1.6987873958 -3.91 09.90" 3 21h 34m 09.66s -15° 54' 46.75" 1.6977855618 -3.91 09.91" 4 21h 39m 06.54s -15° 31' 12.61" 1.6967447400 -3.91 09.91" 5 21h 44m 02.21s -15° 07' 12.82" 1.6956647043 -3.91 09.92" 6 21h 48m 56.67s -14° 42' 48.12" 1.6945451741 -3.91 09.93" 7 21h 53m 49.94s -14° 17' 59.28" 1.6933858320 -3.91 09.93" 8 21h 58m 42.06s -13° 52' 47.05" 1.6921863392 -3.91 09.94" 9 22h 03m 33.03s -13° 27' 12.21" 1.6909463454 -3.91 09.95" 10 22h 08m 22.88s -13° 01' 15.53" 1.6896654941 -3.91 09.95" 11 22h 13m 11.63s -12° 34' 57.80" 1.6883434257 -3.91 09.96" 12 22h 17m 59.30s -12° 08' 19.79" 1.6869797775 -3.91 09.97" 13 22h 22m 45.93s -11° 41' 22.30" 1.6855741857 -3.91 09.98" 14 22h 27m 31.53s -11° 14' 06.10" 1.6841262860 -3.91 09.99" 15 22h 32m 16.13s -10° 46' 32.00" 1.6826357179 -3.91 10.00" 16 22h 36m 59.77s -10° 18' 40.76" 1.6811021307 -3.91 10.01" 17 22h 41m 42.46s -9° 50' 33.18" 1.6795251936 -3.91 10.01" 18 22h 46m 24.25s -9° 22' 10.05" 1.6779046074 -3.91 10.02" 19 22h 51m 05.16s -8° 53' 32.15" 1.6762401189 -3.91 10.03" 20 22h 55m 45.22s -8° 24' 40.25" 1.6745315326 -3.91 10.04" 21 23h 00m 24.47s -7° 55' 35.14" 1.6727787195 -3.91 10.06" 22 23h 05m 02.95s -7° 26' 17.57" 1.6709816199 -3.91 10.07" 23 23h 09m 40.69s -6° 56' 48.34" 1.6691402396 -3.91 10.08" 24 23h 14m 17.73s -6° 27' 08.21" 1.6672546407 -3.91 10.09" 25 23h 18m 54.11s -5° 57' 17.95" 1.6653249271 -3.91 10.10" 26 23h 23m 29.86s -5° 27' 18.34" 1.6633512279 -3.91 10.11" 27 23h 28m 05.03s -4° 57' 10.13" 1.6613336773 -3.91 10.12" 28 23h 32m 39.64s -4° 26' 54.09" 1.6592723951 -3.91 10.14" =================================================================

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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