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 May 09 - Fri Local Time = 12:43:31 Standard Time Std. Time Zone Offset = 00:00:00 Applied Delta T = +00:00:00 Astronomical JD TT = 2460805.03021991 =========================================================================== Geocentric Equatorial Coordinates of Mercury Right Ascension = 01h 49m 00.37s = 1.8167705h = 27.2515575° Declination = +08° 33' 43.56" = +8.562100° True Distance = 1.123662452 AU = 168.097510 Mkm = 104.450950 Mmi Visual Magnitude = -0.3 Angular Diameter = 5.980" Horizontal Parallax = 7.826" = 0.130439' = 0.002173980° Light/Signal Time = 09m 20.71s =========================================================================== 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 49m 00.65s = 1.8168475h = 27.2527131° Topocentric Decl = +08° 33' 38.93" = +8.560815° Local Hour Angle = +20h 57m 30.71s = 314.37796644078° (W=Negative) Local Sidereal Time = 22h 46m 31.363s = 22.775378637h = 341.630679559° Azimuth = 297.00304° (Measured clockwise from S=0°) = 117.00304° (Measured clockwise from N=0°) Direction = ESE Altitude = +37.50904° (Above Local Horizon - No refractions applied) =========================================================================== Mercury Ephemeris Table For Each Day Of May 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 2460794 0.8238846 +02.196311 0.953796119 +0.1 xx 2460795 0.9033660 +02.681972 0.969265824 +0.1 xx 2460796 0.9849634 +03.188469 0.984761519 +0.0 xx 2460797 1.0686518 +03.714924 1.000272331 +0.0 1 2460798 1.1544165 +04.260476 1.015786612 -0.1 2 2460799 1.2422530 +04.824274 1.031291655 -0.1 3 2460800 1.3321664 +05.405471 1.046773406 -0.1 4 2460801 1.4241711 +06.003217 1.062216170 -0.2 5 2460802 1.5182904 +06.616650 1.077602314 -0.2 6 2460803 1.6145561 +07.244889 1.092911943 -0.3 7 2460804 1.7130078 +07.887026 1.108122574 -0.3 8 2460805 1.8136925 +08.542112 1.123208779 -0.3 9 2460806 1.9166641 +09.209150 1.138141818 -0.4 10 2460807 2.0219822 +09.887084 1.152889255 -0.4 11 2460808 2.1297119 +10.574780 1.167414569 -0.5 12 2460809 2.2399221 +11.271021 1.181676766 -0.6 13 2460810 2.3526844 +11.974483 1.195630013 -0.6 14 2460811 2.4680716 +12.683725 1.209223304 -0.7 15 2460812 2.5861554 +13.397171 1.222400194 -0.8 16 2460813 2.7070042 +14.113091 1.235098625 -0.8 17 2460814 2.8306803 +14.829589 1.247250894 -0.9 18 2460815 2.9572363 +15.544583 1.258783795 -1.0 19 2460816 3.0867114 +16.255798 1.269619013 -1.1 20 2460817 3.2191272 +16.960752 1.279673801 -1.2 21 2460818 3.3544826 +17.656760 1.288862017 -1.3 22 2460819 3.4927489 +18.340937 1.297095553 -1.4 23 2460820 3.6338647 +19.010214 1.304286188 -1.6 24 2460821 3.7777310 +19.661366 1.310347852 -1.7 25 2460822 3.9242068 +20.291051 1.315199240 -1.9 26 2460823 4.0731063 +20.895867 1.318766680 -2.0 27 2460824 4.2241976 +21.472414 1.320987062 -2.2 28 2460825 4.3772036 +22.017383 1.321810650 -2.4 29 2460826 4.5318112 +22.527626 1.321203523 -2.4 30 2460827 4.6876581 +23.000173 1.319149424 -2.3 31 2460828 4.8443640 +23.432532 1.315650834 -2.1 xx 2460829 5.0015258 +23.822516 1.310729148 -2.0 xx 2460830 5.1587291 +24.168407 1.304423912 -1.8 xx JD12_TT RA_Hr Decl_Deg Dist_AU VMag Day ===========================================================================