Neptune Ephemeris Calculator
Based on the NASA/JPL DE405 Ephemeris Model
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 = 2025 Nov 17 - Mon Local Time = 08:23:26 Standard Time Std. Time Zone Offset = 00:00:00 Applied Delta T = +00:00:00 Astronomical JD TT = 2460996.84960648 =========================================================================== Geocentric Equatorial Coordinates of Neptune Right Ascension = 00h 03m 44.64s = 0.0623996h = 0.9359940° Declination = -01° 26' 17.62" = -1.438229° True Distance = 29.318109928 AU = 4.385926818 Bkm = 2.725288576 Bmi Visual Magnitude = +7.8 Angular Diameter = 2.285" Horizontal Parallax = 0.300" = 0.004999' = 0.000083321° Light/Signal Time = 04h 03m 49.88s =========================================================================== 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 03m 44.62s = 0.0623956h = 0.9359347° Topocentric Decl = -01° 26' 17.82" = -1.438285° Local Hour Angle = +06h 58m 57.81s = 104.74086909475° (W=Negative) Local Sidereal Time = 07h 02m 42.433s = 7.045120254h = 105.676803816° Azimuth = 99.06462° (Measured clockwise from S=0°) = 279.06462° (Measured clockwise from N=0°) Direction = W Altitude = -11.76043° (Invisible - Below Local Horizon) =========================================================================== Neptune Ephemeris Table For Each Day Of Nov. 2014 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 2460978 0.0267118 -01.318596 29.082282462 +7.8 xx 2460979 0.0254341 -01.326502 29.092827210 +7.8 xx 2460980 0.0241784 -01.334252 29.103612140 +7.8 xx 2460981 0.0229450 -01.341845 29.114633689 +7.8 1 2460982 0.0217348 -01.349276 29.125888268 +7.8 2 2460983 0.0205485 -01.356539 29.137372301 +7.8 3 2460984 0.0193875 -01.363628 29.149082251 +7.8 4 2460985 0.0182525 -01.370536 29.161014644 +7.8 5 2460986 0.0171443 -01.377259 29.173166070 +7.8 6 2460987 0.0160631 -01.383796 29.185533164 +7.8 7 2460988 0.0150089 -01.390148 29.198112557 +7.8 8 2460989 0.0139812 -01.396317 29.210900832 +7.8 9 2460990 0.0129800 -01.402305 29.223894469 +7.8 10 2460991 0.0120053 -01.408110 29.237089815 +7.8 11 2460992 0.0110576 -01.413731 29.250483072 +7.8 12 2460993 0.0101375 -01.419163 29.264070288 +7.8 13 2460994 0.0092457 -01.424401 29.277847367 +7.8 14 2460995 0.0083829 -01.429442 29.291810074 +7.8 15 2460996 0.0075500 -01.434280 29.305954043 +7.8 16 2460997 0.0067475 -01.438912 29.320274790 +7.8 17 2460998 0.0059761 -01.443332 29.334767716 +7.8 18 2460999 0.0052364 -01.447539 29.349428120 +7.8 19 2461000 0.0045285 -01.451530 29.364251202 +7.8 20 2461001 0.0038529 -01.455304 29.379232073 +7.8 21 2461002 0.0032097 -01.458861 29.394365768 +7.8 22 2461003 0.0025988 -01.462199 29.409647251 +7.8 23 2461004 0.0020204 -01.465320 29.425071431 +7.9 24 2461005 0.0014743 -01.468224 29.440633166 +7.9 25 2461006 0.0009606 -01.470912 29.456327283 +7.9 26 2461007 0.0004795 -01.473381 29.472148582 +7.9 27 2461008 0.0000310 -01.475633 29.488091857 +7.9 28 2461009 23.9996156 -01.477664 29.504151913 +7.9 29 2461010 23.9992338 -01.479472 29.520323586 +7.9 30 2461011 23.9988862 -01.481053 29.536601770 +7.9 xx 2461012 23.9985736 -01.482402 29.552981443 +7.9 xx 2461013 23.9982965 -01.483516 29.569457680 +7.9 xx JD12_TT RA_Hr Decl_Deg Dist_AU VMag Day ===========================================================================
Programmed in PHP by Jay Tanner - 2025 - v4.0