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 Jul 27 - Sat Local Time = 13:33:46 Standard Time Std. Time Zone Offset = 00:00:00 Applied Delta T = +00:00:00 Astronomical JD TT = 2460519.06511574 =========================================================================== Geocentric Equatorial Coordinates of Neptune Right Ascension = 00h 02m 43.59s = 0.0454404h = 0.6816060° Declination = -01° 17' 11.29" = -1.286469° True Distance = 29.301026067 AU = 4.383371109 Bkm = 2.723700532 Bmi Visual Magnitude = +7.8 Angular Diameter = 0.229" Horizontal Parallax = 0.300" = 0.005002' = 0.000083370° Light/Signal Time = 04h 03m 41.35s =========================================================================== 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 43.57s = 0.0454365h = 0.6815478° Topocentric Decl = -01° 17' 11.49" = -1.286526° Local Hour Angle = +04h 46m 36.08s = 71.650311379026° (W=Negative) Local Sidereal Time = 04h 49m 19.646s = 4.822123945h = 72.331859169° Azimuth = 76.36736° (Measured clockwise from S=0°) = 256.36736° (Measured clockwise from N=0°) Direction = WSW Altitude = +12.46649° (Above Local Horizon - No refractions applied) =========================================================================== Neptune Ephemeris Table For Each Day Of Jul. 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 2460490 0.0294380 -01.200101 29.752095497 +7.9 xx 2460491 0.0295724 -01.200147 29.735414680 +7.9 xx 2460492 0.0296741 -01.200407 29.718773198 +7.9 xx 2460493 0.0297432 -01.200876 29.702175923 +7.9 1 2460494 0.0297800 -01.201555 29.685627806 +7.9 2 2460495 0.0297842 -01.202444 29.669133865 +7.9 3 2460496 0.0297557 -01.203545 29.652699150 +7.9 4 2460497 0.0296939 -01.204860 29.636328717 +7.9 5 2460498 0.0295986 -01.206392 29.620027602 +7.9 6 2460499 0.0294694 -01.208142 29.603800796 +7.9 7 2460500 0.0293063 -01.210109 29.587653228 +7.9 8 2460501 0.0291095 -01.212293 29.571589758 +7.9 9 2460502 0.0288792 -01.214692 29.555615169 +7.9 10 2460503 0.0286158 -01.217303 29.539734166 +7.9 11 2460504 0.0283197 -01.220123 29.523951379 +7.9 12 2460505 0.0279914 -01.223148 29.508271363 +7.9 13 2460506 0.0276314 -01.226376 29.492698598 +7.9 14 2460507 0.0272402 -01.229802 29.477237489 +7.9 15 2460508 0.0268180 -01.233425 29.461892361 +7.9 16 2460509 0.0263651 -01.237242 29.446667458 +7.9 17 2460510 0.0258818 -01.241252 29.431566939 +7.9 18 2460511 0.0253680 -01.245455 29.416594877 +7.9 19 2460512 0.0248234 -01.249852 29.401755274 +7.9 20 2460513 0.0242477 -01.254445 29.387052074 +7.8 21 2460514 0.0236408 -01.259236 29.372489193 +7.8 22 2460515 0.0230024 -01.264224 29.358070557 +7.8 23 2460516 0.0223330 -01.269408 29.343800137 +7.8 24 2460517 0.0216330 -01.274784 29.329681977 +7.8 25 2460518 0.0209033 -01.280346 29.315720212 +7.8 26 2460519 0.0201448 -01.286089 29.301919067 +7.8 27 2460520 0.0193579 -01.292009 29.288282839 +7.8 28 2460521 0.0185432 -01.298103 29.274815879 +7.8 29 2460522 0.0177008 -01.304369 29.261522563 +7.8 30 2460523 0.0168306 -01.310808 29.248407267 +7.8 31 2460524 0.0159327 -01.317421 29.235474336 +7.8 xx 2460525 0.0150068 -01.324206 29.222728067 +7.8 xx 2460526 0.0140531 -01.331165 29.210172686 +7.8 xx JD12_TT RA_Hr Decl_Deg Dist_AU VMag Day ===========================================================================