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 = 2026 Sep 17 - Thu Local Time = 11:17:29 Standard Time Std. Time Zone Offset = 00:00:00 Applied Delta T = +00:00:00 Astronomical JD TT = 2461300.97047454 =========================================================================== Geocentric Equatorial Coordinates of Mars Right Ascension = 07h 42m 33.82s = 7.7093936h = 115.6409040° Declination = +22° 08' 58.89" = +22.149692° True Distance = 1.753965568 AU = 262.389514 Mkm = 163.041285 Mmi Visual Magnitude = +1.2 Angular Diameter = 3.831" Horizontal Parallax = 5.014" = 0.083564' = 0.001392741° Light/Signal Time = 14m 35.24s =========================================================================== 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 = 07h 42m 33.94s = 7.7094267h = 115.6414008° Topocentric Decl = +22° 08' 57.00" = +22.149166° Local Hour Angle = -01h 46m 46.73s = -26.69468657415° (W=Negative) Local Sidereal Time = 05h 55m 47.211s = 5.929780948h = 88.946714226° Azimuth = 304.39783° (Measured clockwise from S=0°) = 124.39783° (Measured clockwise from N=0°) Direction = SE Altitude = +59.71756° (Above Local Horizon - No refractions applied) =========================================================================== Mars Ephemeris Table For Each Day Of Sep. 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 2461282 6.8585648 +23.408932 1.863607021 +1.3 xx 2461283 6.9047464 +23.365847 1.858253922 +1.3 xx 2461284 6.9507953 +23.319963 1.852854797 +1.3 xx 2461285 6.9967095 +23.271312 1.847409202 +1.3 1 2461286 7.0424869 +23.219927 1.841916689 +1.3 2 2461287 7.0881251 +23.165846 1.836376831 +1.3 3 2461288 7.1336210 +23.109106 1.830789242 +1.2 4 2461289 7.1789713 +23.049747 1.825153600 +1.2 5 2461290 7.2241723 +22.987807 1.819469666 +1.2 6 2461291 7.2692203 +22.923324 1.813737298 +1.2 7 2461292 7.3141115 +22.856337 1.807956464 +1.2 8 2461293 7.3588428 +22.786882 1.802127236 +1.2 9 2461294 7.4034114 +22.714996 1.796249785 +1.2 10 2461295 7.4478150 +22.640717 1.790324358 +1.2 11 2461296 7.4920517 +22.564084 1.784351255 +1.2 12 2461297 7.5361197 +22.485137 1.778330797 +1.2 13 2461298 7.5800174 +22.403920 1.772263311 +1.2 14 2461299 7.6237431 +22.320474 1.766149106 +1.2 15 2461300 7.6672952 +22.234843 1.759988467 +1.2 16 2461301 7.7106718 +22.147070 1.753781649 +1.2 17 2461302 7.7538713 +22.057195 1.747528877 +1.2 18 2461303 7.7968920 +21.965262 1.741230348 +1.2 19 2461304 7.8397322 +21.871311 1.734886230 +1.2 20 2461305 7.8823904 +21.775383 1.728496658 +1.2 21 2461306 7.9248652 +21.677518 1.722061740 +1.2 22 2461307 7.9671552 +21.577755 1.715581542 +1.2 23 2461308 8.0092592 +21.476133 1.709056086 +1.2 24 2461309 8.0511763 +21.372689 1.702485342 +1.2 25 2461310 8.0929056 +21.267463 1.695869226 +1.2 26 2461311 8.1344465 +21.160494 1.689207596 +1.2 27 2461312 8.1757982 +21.051823 1.682500262 +1.1 28 2461313 8.2169597 +20.941493 1.675747004 +1.1 29 2461314 8.2579295 +20.829552 1.668947595 +1.1 30 2461315 8.2987057 +20.716050 1.662101828 +1.1 xx 2461316 8.3392858 +20.601037 1.655209543 +1.1 xx 2461317 8.3796670 +20.484564 1.648270657 +1.1 xx JD12_TT RA_Hr Decl_Deg Dist_AU VMag Day ===========================================================================