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 = 2026 Apr 25 - Sat Local Time = 10:33:31 Standard Time Std. Time Zone Offset = 00:00:00 Applied Delta T = +00:00:00 Astronomical JD TT = 2461155.93994213 =========================================================================== Geocentric Equatorial Coordinates of Mercury Right Ascension = 01h 02m 49.74s = 1.0471503h = 15.7072545° Declination = +04° 05' 25.20" = +4.090334° True Distance = 1.185306450 AU = 177.319321 Mkm = 110.181118 Mmi Visual Magnitude = -0.4 Angular Diameter = 5.669" Horizontal Parallax = 7.419" = 0.123655' = 0.002060918° Light/Signal Time = 09m 51.47s =========================================================================== 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 = 01h 02m 50.10s = 1.0472503h = 15.7087541° Topocentric Decl = +04° 05' 20.27" = +4.088963° Local Hour Angle = +18h 37m 11.19s = 279.29663625876° (W=Negative) Local Sidereal Time = 19h 40m 01.294s = 19.667026022h = 295.005390335° Azimuth = 273.31544° (Measured clockwise from S=0°) = 93.31544° (Measured clockwise from N=0°) Direction = E Altitude = +9.59744° (Above Local Horizon - No refractions applied) =========================================================================== Mercury Ephemeris Table For Each Day Of Apr. 2026 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 2461129 22.9012122 -07.968793 0.805585511 +0.4 xx 2461130 22.9511099 -07.851335 0.819959952 +0.4 xx 2461131 23.0044083 -07.701505 0.834424553 +0.3 xx 2461132 23.0608897 -07.520335 0.848956390 +0.3 1 2461133 23.1203525 -07.308821 0.863535490 +0.3 2 2461134 23.1826115 -07.067926 0.878144446 +0.2 3 2461135 23.2474969 -06.798572 0.892768071 +0.2 4 2461136 23.3148542 -06.501645 0.907393071 +0.2 5 2461137 23.3845435 -06.177991 0.922007756 +0.2 6 2461138 23.4564387 -05.828418 0.936601765 +0.1 7 2461139 23.5304273 -05.453701 0.951165817 +0.1 8 2461140 23.6064095 -05.054580 0.965691467 +0.1 9 2461141 23.6842978 -04.631763 0.980170887 +0.1 10 2461142 23.7640162 -04.185930 0.994596654 +0.0 11 2461143 23.8454998 -03.717737 1.008961544 +0.0 12 2461144 23.9286942 -03.227815 1.023258340 +0.0 13 2461145 0.0135554 -02.716775 1.037479644 +0.0 14 2461146 0.1000490 -02.185213 1.051617701 +0.0 15 2461147 0.1881498 -01.633710 1.065664210 -0.1 16 2461148 0.2778418 -01.062835 1.079610147 -0.1 17 2461149 0.3691174 -00.473153 1.093445565 -0.1 18 2461150 0.4619770 +00.134775 1.107159382 -0.2 19 2461151 0.5564286 +00.760383 1.120739137 -0.2 20 2461152 0.6524880 +01.403100 1.134170729 -0.2 21 2461153 0.7501783 +02.062342 1.147438127 -0.3 22 2461154 0.8495298 +02.737508 1.160523073 -0.3 23 2461155 0.9505802 +03.427973 1.173404777 -0.4 24 2461156 1.0533740 +04.133082 1.186059594 -0.4 25 2461157 1.1579617 +04.852137 1.198460713 -0.5 26 2461158 1.2643996 +05.584391 1.210577822 -0.5 27 2461159 1.3727490 +06.329033 1.222376794 -0.6 28 2461160 1.4830748 +07.085177 1.233819356 -0.6 29 2461161 1.5954452 +07.851848 1.244862799 -0.7 30 2461162 1.7099296 +08.627965 1.255459704 -0.8 xx 2461163 1.8265977 +09.412330 1.265557738 -0.9 xx 2461164 1.9455172 +10.203602 1.275099521 -0.9 xx JD12_TT RA_Hr Decl_Deg Dist_AU VMag Day ===========================================================================