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 : December 1 to 31 ================================================================= Day R.A. Declination Dist AU V Mag A Diam === ============== =============== ============ ===== ======= 1 15h 52m 43.48s -19° 30' 08.12" 1.6820673361 -3.93 10.00" 2 15h 57m 55.09s -19° 47' 48.22" 1.6835783091 -3.93 09.99" 3 16h 03m 07.86s -20° 04' 54.94" 1.6850484704 -3.93 09.98" 4 16h 08m 21.77s -20° 21' 27.61" 1.6864781315 -3.93 09.97" 5 16h 13m 36.82s -20° 37' 25.56" 1.6878675099 -3.93 09.97" 6 16h 18m 52.98s -20° 52' 48.15" 1.6892167125 -3.93 09.96" 7 16h 24m 10.23s -21° 07' 34.71" 1.6905257365 -3.93 09.95" 8 16h 29m 28.53s -21° 21' 44.60" 1.6917944873 -3.93 09.94" 9 16h 34m 47.87s -21° 35' 17.19" 1.6930228091 -3.93 09.93" 10 16h 40m 08.20s -21° 48' 11.85" 1.6942105169 -3.93 09.93" 11 16h 45m 29.50s -22° 00' 28.00" 1.6953574247 -3.93 09.92" 12 16h 50m 51.72s -22° 12' 05.06" 1.6964633631 -3.93 09.91" 13 16h 56m 14.84s -22° 23' 02.51" 1.6975281877 -3.93 09.91" 14 17h 01m 38.81s -22° 33' 19.82" 1.6985517807 -3.93 09.90" 15 17h 07m 03.58s -22° 42' 56.51" 1.6995340501 -3.93 09.90" 16 17h 12m 29.10s -22° 51' 52.12" 1.7004749287 -3.93 09.89" 17 17h 17m 55.34s -23° 00' 06.23" 1.7013743745 -3.92 09.89" 18 17h 23m 22.22s -23° 07' 38.44" 1.7022323714 -3.92 09.88" 19 17h 28m 49.70s -23° 14' 28.37" 1.7030489304 -3.92 09.88" 20 17h 34m 17.72s -23° 20' 35.70" 1.7038240908 -3.92 09.87" 21 17h 39m 46.22s -23° 26' 00.10" 1.7045579233 -3.92 09.87" 22 17h 45m 15.13s -23° 30' 41.32" 1.7052505321 -3.92 09.86" 23 17h 50m 44.40s -23° 34' 39.09" 1.7059020588 -3.92 09.86" 24 17h 56m 13.96s -23° 37' 53.21" 1.7065126840 -3.92 09.86" 25 18h 01m 43.75s -23° 40' 23.49" 1.7070826278 -3.92 09.85" 26 18h 07m 13.70s -23° 42' 09.80" 1.7076121489 -3.92 09.85" 27 18h 12m 43.75s -23° 43' 12.03" 1.7081015430 -3.92 09.85" 28 18h 18m 13.84s -23° 43' 30.10" 1.7085511394 -3.92 09.84" 29 18h 23m 43.89s -23° 43' 03.97" 1.7089612962 -3.92 09.84" 30 18h 29m 13.87s -23° 41' 53.67" 1.7093323893 -3.92 09.84" 31 18h 34m 43.69s -23° 39' 59.23" 1.7096647944 -3.92 09.84" =================================================================

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

Download PHP Source Code For This Program