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 : April 1 to 30 ================================================================= Day R.A. Declination Dist AU V Mag A Diam === ============== =============== ============ ===== ======= 1 23h 39m 24.33s +5° 39' 08.46" 0.2933242219 -4.23 57.34" 2 23h 38m 03.41s +5° 18' 04.66" 0.2961223931 -4.26 56.80" 3 23h 36m 50.70s +4° 57' 23.75" 0.2991767897 -4.28 56.22" 4 23h 35m 46.49s +4° 37' 11.54" 0.3024802934 -4.31 55.61" 5 23h 34m 51.02s +4° 17' 33.36" 0.3060254349 -4.33 54.96" 6 23h 34m 04.47s +3° 58' 34.06" 0.3098044427 -4.36 54.29" 7 23h 33m 26.97s +3° 40' 17.98" 0.3138093014 -4.38 53.60" 8 23h 32m 58.57s +3° 22' 48.93" 0.3180318155 -4.40 52.89" 9 23h 32m 39.30s +3° 06' 10.23" 0.3224636721 -4.42 52.16" 10 23h 32m 29.13s +2° 50' 24.72" 0.3270965000 -4.43 51.42" 11 23h 32m 28.00s +2° 35' 34.74" 0.3319219233 -4.45 50.68" 12 23h 32m 35.81s +2° 21' 42.18" 0.3369316091 -4.46 49.92" 13 23h 32m 52.42s +2° 08' 48.52" 0.3421173119 -4.48 49.17" 14 23h 33m 17.68s +1° 56' 54.85" 0.3474709118 -4.49 48.41" 15 23h 33m 51.39s +1° 46' 01.89" 0.3529844467 -4.50 47.65" 16 23h 34m 33.36s +1° 36' 10.04" 0.3586501396 -4.51 46.90" 17 23h 35m 23.36s +1° 27' 19.42" 0.3644604197 -4.51 46.15" 18 23h 36m 21.17s +1° 19' 29.86" 0.3704079405 -4.52 45.41" 19 23h 37m 26.54s +1° 12' 41.00" 0.3764855942 -4.52 44.68" 20 23h 38m 39.23s +1° 06' 52.23" 0.3826865229 -4.53 43.95" 21 23h 39m 58.97s +1° 02' 02.81" 0.3890041269 -4.53 43.24" 22 23h 41m 25.52s +0° 58' 11.83" 0.3954320719 -4.53 42.54" 23 23h 42m 58.62s +0° 55' 18.24" 0.4019642975 -4.54 41.85" 24 23h 44m 38.02s +0° 53' 20.89" 0.4085950309 -4.54 41.17" 25 23h 46m 23.46s +0° 52' 18.55" 0.4153188070 -4.54 40.50" 26 23h 48m 14.69s +0° 52' 09.92" 0.4221304905 -4.53 39.85" 27 23h 50m 11.49s +0° 52' 53.64" 0.4290252933 -4.53 39.21" 28 23h 52m 13.60s +0° 54' 28.32" 0.4359987787 -4.53 38.58" 29 23h 54m 20.82s +0° 56' 52.56" 0.4430468444 -4.53 37.97" 30 23h 56m 32.91s +1° 00' 04.95" 0.4501656863 -4.53 37.37" =================================================================

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