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 Jun 13 - Fri Local Time = 00:19:11 Standard Time Std. Time Zone Offset = 00:00:00 Applied Delta T = +00:00:00 Astronomical JD TT = 2460839.51332176 =========================================================================== Geocentric Equatorial Coordinates of Mars Right Ascension = 10h 00m 53.24s = 10.0147897h = 150.2218455° Declination = +13° 30' 10.74" = +13.502983° True Distance = 1.791824786 AU = 268.053173 Mkm = 166.560519 Mmi Visual Magnitude = +1.4 Angular Diameter = 3.750" Horizontal Parallax = 4.908" = 0.081799' = 0.001363314° Light/Signal Time = 14m 54.13s =========================================================================== 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 00m 53.09s = 10.0147461h = 150.2211922° Topocentric Decl = +13° 30' 08.17" = +13.502269° Local Hour Angle = +02h 37m 15.53s = 39.314721646148° (W=Negative) Local Sidereal Time = 12h 38m 08.619s = 12.635727590h = 189.535913845° Azimuth = 61.16102° (Measured clockwise from S=0°) = 241.16102° (Measured clockwise from N=0°) Direction = WSW Altitude = +45.30836° (Above Local Horizon - No refractions applied) =========================================================================== Mars Ephemeris Table For Each Day Of Jun. 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 2460825 9.5088751 +16.314306 1.674242594 +1.3 xx 2460826 9.5433521 +16.131297 1.682619758 +1.3 xx 2460827 9.5778942 +15.946648 1.690957387 +1.3 xx 2460828 9.6124986 +15.760373 1.699255004 +1.3 1 2460829 9.6471628 +15.572486 1.707512221 +1.3 2 2460830 9.6818848 +15.382998 1.715728723 +1.3 3 2460831 9.7166626 +15.191924 1.723904255 +1.3 4 2460832 9.7514946 +14.999277 1.732038606 +1.3 5 2460833 9.7863792 +14.805070 1.740131606 +1.3 6 2460834 9.8213151 +14.609318 1.748183117 +1.3 7 2460835 9.8563008 +14.412034 1.756193026 +1.3 8 2460836 9.8913351 +14.213235 1.764161250 +1.3 9 2460837 9.9264168 +14.012934 1.772087719 +1.4 10 2460838 9.9615446 +13.811147 1.779972380 +1.4 11 2460839 9.9967175 +13.607888 1.787815181 +1.4 12 2460840 10.0319345 +13.403171 1.795616069 +1.4 13 2460841 10.0671945 +13.197011 1.803374967 +1.4 14 2460842 10.1024970 +12.989418 1.811091775 +1.4 15 2460843 10.1378414 +12.780402 1.818766346 +1.4 16 2460844 10.1732277 +12.569974 1.826398482 +1.4 17 2460845 10.2086560 +12.358141 1.833987917 +1.4 18 2460846 10.2441266 +12.144911 1.841534312 +1.4 19 2460847 10.2796403 +11.930290 1.849037243 +1.4 20 2460848 10.3151976 +11.714289 1.856496206 +1.4 21 2460849 10.3507989 +11.496919 1.863910622 +1.4 22 2460850 10.3864441 +11.278196 1.871279856 +1.4 23 2460851 10.4221325 +11.058139 1.878603249 +1.4 24 2460852 10.4578631 +10.836770 1.885880153 +1.5 25 2460853 10.4936346 +10.614112 1.893109973 +1.5 26 2460854 10.5294456 +10.390188 1.900292191 +1.5 27 2460855 10.5652953 +10.165019 1.907426387 +1.5 28 2460856 10.6011828 +09.938625 1.914512234 +1.5 29 2460857 10.6371078 +09.711026 1.921549495 +1.5 30 2460858 10.6730700 +09.482242 1.928538006 +1.5 xx 2460859 10.7090695 +09.252292 1.935477667 +1.5 xx 2460860 10.7451062 +09.021196 1.942368420 +1.5 xx JD12_TT RA_Hr Decl_Deg Dist_AU VMag Day ===========================================================================