Mars 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.
Mars Ephemeris Statistics Referred to True Ecliptic and Equinox of Date Based on the NASA/JPL DE405 Ephemeris Model Local Date = 2025 Jul 10 - Thu Local Time = 10:24:07 Standard Time Std. Time Zone Offset = 00:00:00 Applied Delta T = +00:00:00 Astronomical JD TT = 2460866.93341435 =========================================================================== Geocentric Equatorial Coordinates of Mars Right Ascension = 10h 59m 45.59s = 10.9959976h = 164.9399640° Declination = +07° 23' 20.63" = +7.389063° True Distance = 1.988802346 AU = 297.520596 Mkm = 184.870728 Mmi Visual Magnitude = +1.5 Angular Diameter = 3.379" Horizontal Parallax = 4.422" = 0.073697' = 0.001228287° Light/Signal Time = 16m 32.42s =========================================================================== Local Topocentric Coordinates of Mars For Geographic Location: Longitude = -76.833611111° = -05h 07m 20.1s (W=Negative) Latitude = +42.752194444° Elevation = 0 m Topocentric RA = 10h 59m 45.68s = 10.9960212h = 164.9403178° Topocentric Decl = +07° 23' 17.28" = +7.388133° Local Hour Angle = -10h 28m 34.60s = -157.14414964268° (W=Negative) Local Sidereal Time = 00h 31m 11.080s = 0.519744544h = 7.796168158° Azimuth = 208.32053° (Measured clockwise from S=0°) = 28.32053° (Measured clockwise from N=0°) Direction = NNE Altitude = -35.71366° (Invisible - Below Local Horizon) =========================================================================== Mars Ephemeris Table For Each Day Of Jul. 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 2460855 10.5652953 +10.165019 1.907426387 +1.5 xx 2460856 10.6011828 +09.938625 1.914512234 +1.5 xx 2460857 10.6371078 +09.711026 1.921549495 +1.5 xx 2460858 10.6730700 +09.482242 1.928538006 +1.5 1 2460859 10.7090695 +09.252292 1.935477667 +1.5 2 2460860 10.7451062 +09.021196 1.942368420 +1.5 3 2460861 10.7811802 +08.788974 1.949210254 +1.5 4 2460862 10.8172917 +08.555646 1.956003185 +1.5 5 2460863 10.8534407 +08.321234 1.962747265 +1.5 6 2460864 10.8896275 +08.085757 1.969442570 +1.5 7 2460865 10.9258522 +07.849237 1.976089204 +1.5 8 2460866 10.9621149 +07.611694 1.982687288 +1.5 9 2460867 10.9984159 +07.373149 1.989236958 +1.5 10 2460868 11.0347554 +07.133623 1.995738351 +1.5 11 2460869 11.0711339 +06.893133 2.002191592 +1.5 12 2460870 11.1075522 +06.651698 2.008596779 +1.5 13 2460871 11.1440111 +06.409333 2.014953964 +1.5 14 2460872 11.1805120 +06.166051 2.021263139 +1.5 15 2460873 11.2170566 +05.921865 2.027524223 +1.5 16 2460874 11.2536467 +05.676789 2.033737053 +1.5 17 2460875 11.2902840 +05.430834 2.039901381 +1.5 18 2460876 11.3269702 +05.184017 2.046016878 +1.6 19 2460877 11.3637066 +04.936355 2.052083146 +1.6 20 2460878 11.4004941 +04.687868 2.058099732 +1.6 21 2460879 11.4373332 +04.438582 2.064066155 +1.6 22 2460880 11.4742242 +04.188522 2.069981936 +1.6 23 2460881 11.5111670 +03.937713 2.075846626 +1.6 24 2460882 11.5481621 +03.686185 2.081659833 +1.6 25 2460883 11.5852097 +03.433961 2.087421242 +1.6 26 2460884 11.6223105 +03.181068 2.093130616 +1.6 27 2460885 11.6594654 +02.927530 2.098787805 +1.6 28 2460886 11.6966753 +02.673371 2.104392727 +1.6 29 2460887 11.7339413 +02.418617 2.109945366 +1.6 30 2460888 11.7712643 +02.163291 2.115445757 +1.6 31 2460889 11.8086454 +01.907420 2.120893979 +1.6 xx 2460890 11.8460855 +01.651028 2.126290148 +1.6 xx 2460891 11.8835855 +01.394141 2.131634415 +1.6 xx JD12_TT RA_Hr Decl_Deg Dist_AU VMag Day ===========================================================================