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 Feb 04 - Wed Local Time = 01:06:39 Standard Time Std. Time Zone Offset = 00:00:00 Applied Delta T = +00:00:00 Astronomical JD TT = 2461075.54628472 =========================================================================== Geocentric Equatorial Coordinates of Neptune Right Ascension = 00h 02m 55.16s = 0.0486555h = 0.7298325° Declination = -01° 06' 56.58" = -1.115717° True Distance = 30.572538561 AU = 4.573586670 Bkm = 2.841895002 Bmi Visual Magnitude = +7.9 Angular Diameter = 0.220" Horizontal Parallax = 0.288" = 0.004794' = 0.000079902° Light/Signal Time = 04h 14m 15.84s =========================================================================== 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 02m 55.15s = 0.0486517h = 0.7297762° Topocentric Decl = -01° 06' 56.78" = -1.115771° Local Hour Angle = +04h 53m 16.67s = 73.31946207642° (W=Negative) Local Sidereal Time = 04h 56m 11.817s = 4.936615885h = 74.049238276° Azimuth = 77.68351° (Measured clockwise from S=0°) = 257.68351° (Measured clockwise from N=0°) Direction = WSW Altitude = +11.39141° (Above Local Horizon - No refractions applied) =========================================================================== Neptune Ephemeris Table For Each Day Of Feb. 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 2461070 0.0393142 -01.179116 30.501007729 +7.9 xx 2461071 0.0409439 -01.168017 30.514348383 +7.9 xx 2461072 0.0425985 -01.156767 30.527497763 +7.9 xx 2461073 0.0442770 -01.145371 30.540452598 +7.9 1 2461074 0.0459788 -01.133833 30.553209626 +7.9 2 2461075 0.0477036 -01.122155 30.565765564 +7.9 3 2461076 0.0494513 -01.110339 30.578117094 +7.9 4 2461077 0.0512219 -01.098383 30.590260870 +7.9 5 2461078 0.0530156 -01.086288 30.602193522 +7.9 6 2461079 0.0548322 -01.074054 30.613911673 +7.9 7 2461080 0.0566714 -01.061682 30.625411961 +7.9 8 2461081 0.0585331 -01.049176 30.636691046 +7.9 9 2461082 0.0604167 -01.036537 30.647745626 +7.9 10 2461083 0.0623217 -01.023770 30.658572443 +7.9 11 2461084 0.0642474 -01.010879 30.669168287 +7.9 12 2461085 0.0661931 -00.997869 30.679530003 +7.9 13 2461086 0.0681581 -00.984744 30.689654497 +7.9 14 2461087 0.0701416 -00.971510 30.699538742 +7.9 15 2461088 0.0721429 -00.958172 30.709179792 +7.9 16 2461089 0.0741612 -00.944734 30.718574799 +7.9 17 2461090 0.0761963 -00.931200 30.727721032 +7.9 18 2461091 0.0782477 -00.917571 30.736615901 +7.9 19 2461092 0.0803153 -00.903849 30.745256975 +7.9 20 2461093 0.0823992 -00.890033 30.753641999 +7.9 21 2461094 0.0844993 -00.876126 30.761768900 +7.9 22 2461095 0.0866152 -00.862127 30.769635789 +7.9 23 2461096 0.0887464 -00.848042 30.777240942 +7.9 24 2461097 0.0908922 -00.833874 30.784582792 +7.9 25 2461098 0.0930515 -00.819632 30.791659896 +7.9 26 2461099 0.0952232 -00.805322 30.798470910 +7.9 27 2461100 0.0974063 -00.790950 30.805014562 +8.0 28 2461101 0.0996001 -00.776521 30.811289617 +8.0 xx 2461102 0.1018039 -00.762040 30.817294854 +8.0 xx 2461103 0.1040176 -00.747509 30.823029048 +8.0 xx JD12_TT RA_Hr Decl_Deg Dist_AU VMag Day ===========================================================================