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 Dec 03 - Wed Local Time = 03:22:34 Standard Time Std. Time Zone Offset = 00:00:00 Applied Delta T = +00:00:00 Astronomical JD TT = 2461012.64067130 =========================================================================== Geocentric Equatorial Coordinates of Mercury Right Ascension = 15h 19m 45.24s = 15.3292329h = 229.9384935° Declination = -15° 39' 38.45" = -15.660680° True Distance = 0.895592682 AU = 133.978758 Mkm = 83.250541 Mmi Visual Magnitude = -0.3 Angular Diameter = 7.503" Horizontal Parallax = 9.819" = 0.163656' = 0.002727601° Light/Signal Time = 07m 26.91s =========================================================================== 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 = 15h 19m 45.20s = 15.3292234h = 229.9383513° Topocentric Decl = -15° 39' 42.89" = -15.661913° Local Hour Angle = -12h 15m 39.28s = -183.91366106302° (W=Negative) Local Sidereal Time = 03h 04m 05.926s = 3.068312683h = 46.024690245° Azimuth = 171.76100° (Measured clockwise from S=0°) = 351.76100° (Measured clockwise from N=0°) Direction = N Altitude = -62.70301° (Invisible - Below Local Horizon) =========================================================================== Mercury Ephemeris Table For Each Day Of Dec. 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 2461008 15.2721593 -15.607036 0.785286567 +0.6 xx 2461009 15.2646991 -15.489948 0.807763225 +0.4 xx 2461010 15.2687796 -15.449111 0.831193782 +0.1 xx 2461011 15.2836585 -15.478548 0.855288583 -0.1 1 2461012 15.3084947 -15.571335 0.879788867 -0.2 2 2461013 15.3424085 -15.720121 0.904468619 -0.3 3 2461014 15.3845263 -15.917521 0.929134333 -0.4 4 2461015 15.4340105 -16.156386 0.953623344 -0.4 5 2461016 15.4900783 -16.429977 0.977801274 -0.5 6 2461017 15.5520124 -16.732070 1.001559044 -0.5 7 2461018 15.6191645 -17.056994 1.024809727 -0.5 8 2461019 15.6909559 -17.399644 1.047485483 -0.5 9 2461020 15.7668734 -17.755465 1.069534660 -0.5 10 2461021 15.8464655 -18.120408 1.090919166 -0.5 11 2461022 15.9293361 -18.490899 1.111612126 -0.5 12 2461023 16.0151394 -18.863784 1.131595840 -0.5 13 2461024 16.1035734 -19.236286 1.150860021 -0.5 14 2461025 16.1943754 -19.605961 1.169400312 -0.5 15 2461026 16.2873164 -19.970657 1.187217028 -0.5 16 2461027 16.3821968 -20.328476 1.204314117 -0.5 17 2461028 16.4788427 -20.677742 1.220698300 -0.5 18 2461029 16.5771020 -21.016969 1.236378364 -0.5 19 2461030 16.6768414 -21.344837 1.251364585 -0.5 20 2461031 16.7779437 -21.660172 1.265668256 -0.5 21 2461032 16.8803059 -21.961920 1.279301305 -0.5 22 2461033 16.9838367 -22.249135 1.292275991 -0.5 23 2461034 17.0884550 -22.520965 1.304604647 -0.5 24 2461035 17.1940886 -22.776636 1.316299485 -0.5 25 2461036 17.3006727 -23.015444 1.327372430 -0.5 26 2461037 17.4081491 -23.236747 1.337834991 -0.5 27 2461038 17.5164648 -23.439954 1.347698147 -0.5 28 2461039 17.6255715 -23.624523 1.356972263 -0.5 29 2461040 17.7354248 -23.789951 1.365667000 -0.5 30 2461041 17.8459831 -23.935771 1.373791246 -0.5 31 2461042 17.9572072 -24.061546 1.381353044 -0.6 xx 2461043 18.0690595 -24.166865 1.388359530 -0.6 xx 2461044 18.1815043 -24.251336 1.394816877 -0.6 xx JD12_TT RA_Hr Decl_Deg Dist_AU VMag Day ===========================================================================