Mercury Ephemeris Calculator
Based on the NASA/JPL DE405 Ephemeris Model
PHP Program By Jay Tanner
Date: (1600 to 2200) Y m d
Local Time (00h to 24h) H:M:S
Local Time Zone Offset ±H:M
Undefined1
Std. Time = UT
Apply ΔT
+00:00:00
Daylight / Summer Time
Undefined3
Longitude ±Deg.d M S
(Neg=W)
Latitude ±Deg.d M S
(Neg=S)
Sea Level Elevation
(± meters)
This program uses a cookie to store and remember the interface settings between calls.
Mercury Ephemeris Statistics Referred to True Ecliptic and Equinox of Date Based on the NASA/JPL DE405 Ephemeris Model Local Date = 2025 Apr 25 - Fri Local Time = 22:25:49 Standard Time Std. Time Zone Offset = 00:00:00 Applied Delta T = +00:00:00 Astronomical JD TT = 2460791.43459491 =========================================================================== Geocentric Equatorial Coordinates of Mercury Right Ascension = 00h 37m 47.76s = 0.6299341h = 9.4490115° Declination = +01° 03' 07.18" = +1.051994° True Distance = 0.914300738 AU = 136.777444 Mkm = 84.989563 Mmi Visual Magnitude = +0.2 Angular Diameter = 7.350" Horizontal Parallax = 9.618" = 0.160307' = 0.002671790° Light/Signal Time = 07m 36.24s =========================================================================== Local Topocentric Coordinates of Mercury For Geographic Location: Longitude = -76.833611111° = -05h 07m 20.1s (W=Negative) Latitude = +42.752194444° Elevation = 0 m Topocentric RA = 00h 37m 47.31s = 0.6298072h = 9.4471076° Topocentric Decl = +01° 03' 00.65" = +1.050181° Local Hour Angle = +06h 57m 25.93s = 104.358025977° (W=Negative) Local Sidereal Time = 07h 35m 13.232s = 7.587008907h = 113.805133611° Azimuth = 100.62841° (Measured clockwise from S=0°) = 280.62841° (Measured clockwise from N=0°) Direction = W Altitude = -9.76566° (Invisible - Below Local Horizon) =========================================================================== Mercury Ephemeris Table For Each Day Of Apr. 2025 at 12:00 TT There are three extra (xx) padding days at each end of the table. JD12_TT RA_Hr Decl_Deg Dist_AU VMag Day 2460764 23.9675506 +02.239647 0.598006608 +4.1 xx 2460765 23.9293143 +01.721940 0.600547567 +3.6 xx 2460766 23.8955634 +01.223124 0.604389469 +3.3 xx 2460767 23.8667336 +00.749550 0.609436701 +2.9 1 2460768 23.8431419 +00.306519 0.615593769 +2.6 2 2460769 23.8249957 -00.101707 0.622766989 +2.3 3 2460770 23.8124060 -00.471843 0.630865858 +2.1 4 2460771 23.8054008 -00.801496 0.639804108 +1.8 5 2460772 23.8039395 -01.089055 0.649500453 +1.6 6 2460773 23.8079257 -01.333586 0.659879078 +1.5 7 2460774 23.8172203 -01.534714 0.670869888 +1.3 8 2460775 23.8316524 -01.692524 0.682408574 +1.2 9 2460776 23.8510283 -01.807464 0.694436523 +1.1 10 2460777 23.8751408 -01.880261 0.706900620 +0.9 11 2460778 23.9037746 -01.911853 0.719752965 +0.9 12 2460779 23.9367130 -01.903328 0.732950540 +0.8 13 2460780 23.9737412 -01.855878 0.746454845 +0.7 14 2460781 0.0146501 -01.770757 0.760231518 +0.6 15 2460782 0.0592386 -01.649255 0.774249951 +0.6 16 2460783 0.1073156 -01.492673 0.788482922 +0.5 17 2460784 0.1587013 -01.302303 0.802906220 +0.5 18 2460785 0.2132277 -01.079420 0.817498308 +0.4 19 2460786 0.2707395 -00.825270 0.832239984 +0.4 20 2460787 0.3310943 -00.541064 0.847114073 +0.3 21 2460788 0.3941624 -00.227976 0.862105130 +0.3 22 2460789 0.4598270 +00.112860 0.877199171 +0.3 23 2460790 0.5279841 +00.480349 0.892383416 +0.2 24 2460791 0.5985421 +00.873438 0.907646055 +0.2 25 2460792 0.6714214 +01.291109 0.922976026 +0.2 26 2460793 0.7465544 +01.732383 0.938362793 +0.1 27 2460794 0.8238846 +02.196311 0.953796119 +0.1 28 2460795 0.9033660 +02.681972 0.969265824 +0.1 29 2460796 0.9849634 +03.188469 0.984761519 +0.0 30 2460797 1.0686518 +03.714924 1.000272331 +0.0 xx 2460798 1.1544165 +04.260476 1.015786612 -0.1 xx 2460799 1.2422530 +04.824274 1.031291655 -0.1 xx JD12_TT RA_Hr Decl_Deg Dist_AU VMag Day ===========================================================================