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 Oct 18 - Sat Local Time = 02:06:47 Standard Time Std. Time Zone Offset = 00:00:00 Applied Delta T = +00:00:00 Astronomical JD TT = 2460966.58804398 =========================================================================== Geocentric Equatorial Coordinates of Mercury Right Ascension = 14h 52m 46.90s = 14.8796952h = 223.1954280° Declination = -18° 39' 58.81" = -18.666336° True Distance = 1.206751645 AU = 180.527477 Mkm = 112.174573 Mmi Visual Magnitude = -0.2 Angular Diameter = 5.569" Horizontal Parallax = 7.287" = 0.121458' = 0.002024293° Light/Signal Time = 10m 02.17s =========================================================================== 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 = 14h 52m 46.57s = 14.8796031h = 223.1940469° Topocentric Decl = -18° 40' 02.65" = -18.667404° Local Hour Angle = +07h 53m 58.33s = 118.49304037954° (W=Negative) Local Sidereal Time = 22h 46m 44.901s = 22.779139155h = 341.687087327° Azimuth = 94.92656° (Measured clockwise from S=0°) = 274.92656° (Measured clockwise from N=0°) Direction = W Altitude = -33.30837° (Invisible - Below Local Horizon) =========================================================================== Mercury Ephemeris Table For Each Day Of Oct. 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 2460947 13.0601209 -06.568530 1.380945216 -0.6 xx 2460948 13.1574983 -07.292583 1.376324424 -0.6 xx 2460949 13.2542496 -08.007314 1.371216139 -0.5 xx 2460950 13.3504149 -08.712333 1.365629953 -0.5 1 2460951 13.4460308 -09.407266 1.359574042 -0.4 2 2460952 13.5411312 -10.091749 1.353055262 -0.4 3 2460953 13.6357464 -10.765429 1.346079244 -0.4 4 2460954 13.7299036 -11.427958 1.338650466 -0.4 5 2460955 13.8236262 -12.078993 1.330772320 -0.3 6 2460956 13.9169342 -12.718196 1.322447169 -0.3 7 2460957 14.0098429 -13.345226 1.313676393 -0.3 8 2460958 14.1023625 -13.959736 1.304460448 -0.3 9 2460959 14.1944977 -14.561374 1.294798933 -0.2 10 2460960 14.2862468 -15.149773 1.284690674 -0.2 11 2460961 14.3776016 -15.724551 1.274133823 -0.2 12 2460962 14.4685468 -16.285313 1.263125965 -0.2 13 2460963 14.5590597 -16.831646 1.251664224 -0.2 14 2460964 14.6491090 -17.363118 1.239745373 -0.2 15 2460965 14.7386548 -17.879279 1.227365952 -0.2 16 2460966 14.8276468 -18.379658 1.214522385 -0.2 17 2460967 14.9160235 -18.863762 1.201211112 -0.2 18 2460968 15.0037106 -19.331070 1.187428740 -0.2 19 2460969 15.0906200 -19.781034 1.173172209 -0.2 20 2460970 15.1766476 -20.213076 1.158438994 -0.2 21 2460971 15.2616719 -20.626580 1.143227332 -0.2 22 2460972 15.3455515 -21.020894 1.127536494 -0.2 23 2460973 15.4281231 -21.395321 1.111367100 -0.2 24 2460974 15.5091989 -21.749116 1.094721504 -0.2 25 2460975 15.5885635 -22.081480 1.077604234 -0.2 26 2460976 15.6659711 -22.391551 1.060022530 -0.2 27 2460977 15.7411417 -22.678399 1.041986978 -0.2 28 2460978 15.8137578 -22.941011 1.023512257 -0.2 29 2460979 15.8834603 -23.178285 1.004618034 -0.2 30 2460980 15.9498446 -23.389011 0.985330004 -0.2 31 2460981 16.0124566 -23.571859 0.965681123 -0.2 xx 2460982 16.0707897 -23.725358 0.945713023 -0.2 xx 2460983 16.1242816 -23.847877 0.925477652 -0.2 xx JD12_TT RA_Hr Decl_Deg Dist_AU VMag Day ===========================================================================