Neptune 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.
Neptune Ephemeris Statistics Referred to True Ecliptic and Equinox of Date Based on the NASA/JPL DE405 Ephemeris Model Local Date = 2026 Mar 10 - Tue Local Time = 13:42:29 Standard Time Std. Time Zone Offset = 00:00:00 Applied Delta T = +00:00:00 Astronomical JD TT = 2461110.07116898 =========================================================================== Geocentric Equatorial Coordinates of Neptune Right Ascension = 00h 07m 11.78s = 0.1199387h = 1.7990805° Declination = -00° 38' 36.16" = -0.643378° True Distance = 30.855734796 AU = 4.615952224 Bkm = 2.868219737 Bmi Visual Magnitude = +8.0 Angular Diameter = 0.218" Horizontal Parallax = 0.285" = 0.004750' = 0.000079169° Light/Signal Time = 04h 16m 37.16s =========================================================================== Local Topocentric Coordinates of Neptune For Geographic Location: Longitude = -76.833611111° = -05h 07m 20.1s (W=Negative) Latitude = +42.752194444° Elevation = 0 m Topocentric RA = 00h 07m 11.79s = 0.1199422h = 1.7991332° Topocentric Decl = -00° 38' 36.35" = -0.643432° Local Hour Angle = +19h 40m 57.03s = 295.23762444687° (W=Negative) Local Sidereal Time = 19h 48m 08.822s = 19.802450508h = 297.036757616° Azimuth = 288.21606° (Measured clockwise from S=0°) = 108.21606° (Measured clockwise from N=0°) Direction = ESE Altitude = +17.78474° (Above Local Horizon - No refractions applied) =========================================================================== Neptune Ephemeris Table For Each Day Of Mar. 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 2461098 0.0930515 -00.819632 30.791659896 +7.9 xx 2461099 0.0952232 -00.805322 30.798470910 +7.9 xx 2461100 0.0974063 -00.790950 30.805014562 +8.0 xx 2461101 0.0996001 -00.776521 30.811289617 +8.0 1 2461102 0.1018039 -00.762040 30.817294854 +8.0 2 2461103 0.1040176 -00.747509 30.823029048 +8.0 3 2461104 0.1062409 -00.732927 30.828490960 +8.0 4 2461105 0.1084739 -00.718295 30.833679339 +8.0 5 2461106 0.1107165 -00.703614 30.838592928 +8.0 6 2461107 0.1129685 -00.688885 30.843230481 +8.0 7 2461108 0.1152294 -00.674110 30.847590774 +8.0 8 2461109 0.1174989 -00.659293 30.851672620 +8.0 9 2461110 0.1197763 -00.644437 30.855474879 +8.0 10 2461111 0.1220609 -00.629547 30.858996469 +8.0 11 2461112 0.1243520 -00.614628 30.862236365 +8.0 12 2461113 0.1266488 -00.599685 30.865193610 +8.0 13 2461114 0.1289505 -00.584723 30.867867318 +8.0 14 2461115 0.1312564 -00.569748 30.870256679 +8.0 15 2461116 0.1335657 -00.554764 30.872360971 +8.0 16 2461117 0.1358779 -00.539775 30.874179578 +8.0 17 2461118 0.1381925 -00.524786 30.875712010 +8.0 18 2461119 0.1405096 -00.509798 30.876957929 +8.0 19 2461120 0.1428292 -00.494816 30.877917171 +8.0 20 2461121 0.1451508 -00.479855 30.878589765 +8.0 21 2461122 0.1474715 -00.464914 30.878975933 +8.0 22 2461123 0.1497919 -00.449915 30.879076083 +8.0 23 2461124 0.1521159 -00.434911 30.878890781 +8.0 24 2461125 0.1544403 -00.419936 30.878420724 +8.0 25 2461126 0.1567633 -00.404992 30.877666702 +8.0 26 2461127 0.1590836 -00.390082 30.876629571 +8.0 27 2461128 0.1614006 -00.375209 30.875310220 +8.0 28 2461129 0.1637136 -00.360377 30.873709556 +8.0 29 2461130 0.1660223 -00.345586 30.871828484 +8.0 30 2461131 0.1683266 -00.330838 30.869667903 +8.0 31 2461132 0.1706263 -00.316133 30.867228699 +8.0 xx 2461133 0.1729214 -00.301472 30.864511749 +8.0 xx 2461134 0.1752117 -00.286855 30.861517930 +8.0 xx JD12_TT RA_Hr Decl_Deg Dist_AU VMag Day ===========================================================================