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 = 2024 Nov 02 - Sat Local Time = 05:06:31 Standard Time Std. Time Zone Offset = 00:00:00 Applied Delta T = +00:00:00 Astronomical JD TT = 2460616.71285880 =========================================================================== Geocentric Equatorial Coordinates of Neptune Right Ascension = 23h 52m 50.66s = 23.8807401h = 358.2111015° Declination = -02° 12' 48.18" = -2.213383° True Distance = 29.160432793 AU = 4.362338654 Bkm = 2.710631571 Bmi Visual Magnitude = +7.8 Angular Diameter = 0.230" Horizontal Parallax = 0.302" = 0.005026' = 0.000083772° Light/Signal Time = 04h 02m 31.20s =========================================================================== 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 = 23h 52m 50.65s = 23.8807373h = 358.2110590° Topocentric Decl = -02° 12' 48.39" = -2.213441° Local Hour Angle = -21h 05m 46.98s = -316.44575801846° (W=Negative) Local Sidereal Time = 02h 47m 03.672s = 2.784353400h = 41.765300999° Azimuth = 52.94095° (Measured clockwise from S=0°) = 232.94095° (Measured clockwise from N=0°) Direction = SW Altitude = +30.36762° (Above Local Horizon - No refractions applied) =========================================================================== Neptune Ephemeris Table For Each Day Of Nov. 2024 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 2460613 23.8851542 -02.186268 29.117935499 +7.8 xx 2460614 23.8839319 -02.193804 29.129066619 +7.8 xx 2460615 23.8827338 -02.201171 29.140431934 +7.8 xx 2460616 23.8815607 -02.208364 29.152027836 +7.8 1 2460617 23.8804133 -02.215379 29.163850585 +7.8 2 2460618 23.8792920 -02.222213 29.175896318 +7.8 3 2460619 23.8781974 -02.228863 29.188161053 +7.8 4 2460620 23.8771296 -02.235329 29.200640695 +7.8 5 2460621 23.8760889 -02.241608 29.213331053 +7.8 6 2460622 23.8750754 -02.247702 29.226227848 +7.8 7 2460623 23.8740889 -02.253609 29.239326730 +7.8 8 2460624 23.8731298 -02.259329 29.252623298 +7.8 9 2460625 23.8721982 -02.264862 29.266113120 +7.8 10 2460626 23.8712946 -02.270203 29.279791762 +7.8 11 2460627 23.8704198 -02.275348 29.293654816 +7.8 12 2460628 23.8695746 -02.280292 29.307697925 +7.8 13 2460629 23.8687599 -02.285028 29.321916811 +7.8 14 2460630 23.8679766 -02.289554 29.336307270 +7.8 15 2460631 23.8672250 -02.293865 29.350865158 +7.8 16 2460632 23.8665051 -02.297964 29.365586356 +7.8 17 2460633 23.8658167 -02.301852 29.380466723 +7.8 18 2460634 23.8651594 -02.305532 29.395502052 +7.8 19 2460635 23.8645331 -02.309004 29.410688041 +7.9 20 2460636 23.8639380 -02.312267 29.426020274 +7.9 21 2460637 23.8633742 -02.315321 29.441494216 +7.9 22 2460638 23.8628422 -02.318162 29.457105218 +7.9 23 2460639 23.8623426 -02.320787 29.472848520 +7.9 24 2460640 23.8618758 -02.323193 29.488719261 +7.9 25 2460641 23.8614425 -02.325377 29.504712484 +7.9 26 2460642 23.8610432 -02.327334 29.520823140 +7.9 27 2460643 23.8606783 -02.329062 29.537046091 +7.9 28 2460644 23.8603484 -02.330559 29.553376112 +7.9 29 2460645 23.8600536 -02.331823 29.569807893 +7.9 30 2460646 23.8597941 -02.332853 29.586336048 +7.9 xx 2460647 23.8595700 -02.333651 29.602955117 +7.9 xx 2460648 23.8593810 -02.334217 29.619659584 +7.9 xx JD12_TT RA_Hr Decl_Deg Dist_AU VMag Day ===========================================================================