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 Apr 25 - Sat Local Time = 10:34:54 Standard Time Std. Time Zone Offset = 00:00:00 Applied Delta T = +00:00:00 Astronomical JD TT = 2461155.94090278 =========================================================================== Geocentric Equatorial Coordinates of Neptune Right Ascension = 00h 13m 23.54s = 0.2232064h = 3.3480960° Declination = +00° 00' 57.42" = +0.015950° True Distance = 30.728537334 AU = 4.596923755 Bkm = 2.856395994 Bmi Visual Magnitude = +7.9 Angular Diameter = 0.219" Horizontal Parallax = 0.286" = 0.004770' = 0.000079497° Light/Signal Time = 04h 15m 33.69s =========================================================================== 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 13m 23.56s = 0.2232100h = 3.3481502° Topocentric Decl = +00° 00' 57.23" = +0.015896° Local Hour Angle = +19h 28m 00.96s = 292.00402095409° (W=Negative) Local Sidereal Time = 19h 41m 24.521s = 19.690144744h = 295.352171160° Azimuth = 285.32832° (Measured clockwise from S=0°) = 105.32832° (Measured clockwise from N=0°) Direction = ESE Altitude = +15.98039° (Above Local Horizon - No refractions applied) =========================================================================== Neptune Ephemeris Table For Each Day Of Apr. 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 2461129 0.1637136 -00.360377 30.873709556 +8.0 xx 2461130 0.1660223 -00.345586 30.871828484 +8.0 xx 2461131 0.1683266 -00.330838 30.869667903 +8.0 xx 2461132 0.1706263 -00.316133 30.867228699 +8.0 1 2461133 0.1729214 -00.301472 30.864511749 +8.0 2 2461134 0.1752117 -00.286855 30.861517930 +8.0 3 2461135 0.1774970 -00.272284 30.858248125 +8.0 4 2461136 0.1797769 -00.257762 30.854703241 +8.0 5 2461137 0.1820507 -00.243292 30.850884215 +8.0 6 2461138 0.1843179 -00.228877 30.846792028 +8.0 7 2461139 0.1865777 -00.214523 30.842427711 +8.0 8 2461140 0.1888294 -00.200235 30.837792351 +8.0 9 2461141 0.1910723 -00.186016 30.832887099 +8.0 10 2461142 0.1933055 -00.171873 30.827713171 +8.0 11 2461143 0.1955285 -00.157809 30.822271856 +8.0 12 2461144 0.1977406 -00.143829 30.816564527 +8.0 13 2461145 0.1999413 -00.129935 30.810592656 +8.0 14 2461146 0.2021305 -00.116130 30.804357837 +8.0 15 2461147 0.2043081 -00.102413 30.797861808 +7.9 16 2461148 0.2064741 -00.088785 30.791106479 +7.9 17 2461149 0.2086285 -00.075246 30.784093948 +7.9 18 2461150 0.2107710 -00.061796 30.776826506 +7.9 19 2461151 0.2129010 -00.048441 30.769306618 +7.9 20 2461152 0.2150174 -00.035186 30.761536887 +7.9 21 2461153 0.2171191 -00.022038 30.753520014 +7.9 22 2461154 0.2192052 -00.009005 30.745258750 +7.9 23 2461155 0.2212747 +00.003910 30.736755867 +7.9 24 2461156 0.2233272 +00.016702 30.728014131 +7.9 25 2461157 0.2253623 +00.029369 30.719036290 +7.9 26 2461158 0.2273800 +00.041911 30.709825068 +7.9 27 2461159 0.2293803 +00.054328 30.700383166 +7.9 28 2461160 0.2313632 +00.066620 30.690713263 +7.9 29 2461161 0.2333285 +00.078786 30.680818024 +7.9 30 2461162 0.2352761 +00.090827 30.670700105 +7.9 xx 2461163 0.2372058 +00.102739 30.660362166 +7.9 xx 2461164 0.2391170 +00.114522 30.649806875 +7.9 xx JD12_TT RA_Hr Decl_Deg Dist_AU VMag Day ===========================================================================