Basic Lunar Ephemeris Statistics and Phase Calculator
Based on the 600-Year 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
NASA Polynomial ΔT
:
:
Time Zone:
UT
Apply ΔT
+00:00:00
Daylight / Summer Time
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.
N
S
Lunar Ephemeris Statistics Referred to True Ecliptic and Equinox of Date Based on the NASA/JPL DE405 Ephemeris Model and NASA Polynomial Expressions for Delta T Local Date = 2026 Apr 02 - Thu Local Time = 08:27:50 Standard Time Std. Time Zone Offset = 00:00:00 Applied Delta T = +00:00:00 Working Julian Date = 2461132.85266204 TT Julian Day Number = JDNumLT Longitude = -76.833611111° = -05h 07m 20.1s (W=Negative) Latitude = +42.752194444° Elevation = 0 m Local Sidereal Time = 16h 03m 18.870s = 16.055241553h = 240.828623296° =========================================================================== Geocentric Lunar Ephemeris Statistics Right Ascension = 12h 52m 41.88s = 12.8783010h = 193.1745150° Declination = -09° 01' 40.74" = -9.027984° True Distance = 394469.74 km = 245112.13 mi Angular Diameter = 00° 30' 16.62" = 30.276955' = 0.504615919° Angular Semi-Diameter = 00° 15' 08.31" = 15.138478' = 0.252307960° Phase Angle = 183.01530° Horizontal Parallax = 55.586964' = 0.926449406° Light/Signal Time = 1.289 sec (surface-to-surface) =========================================================================== Local Topocentric and Horizon Coordinates of Moon Topocentric RA = 12h 50m 38.52s = 12.8440328h = 192.6604923° Topocentric Decl = -09° 43' 18.34" = -9.721761° Local Hour Angle = +03h 10m 36.99s = +47.6541083° (E=Negative) Azimuth = 52.17203° (Measured clockwise from S=0°) = 232.17203° (Measured clockwise from N=0°) Direction = SW Altitude = +21.59691° (Above Local Horizon - No refractions applied) =========================================================================== Geocentric Lunar 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. JD_Num RA_Hr Declin° Dist_km Phase_Ang° Day 2461129 9.8980250 +14.023065 381571.059 137.00007 xx 2461130 10.7075162 +08.166842 384800.925 149.22974 xx 2461131 11.4810990 +02.058938 388156.791 161.25749 xx 2461132 12.2363428 -04.030783 391578.069 173.08566 1 2461133 12.9897921 -09.862258 394960.210 184.71680 2 2461134 13.7559643 -15.215767 398151.302 196.15661 3 2461135 14.5463470 -19.885540 400959.666 207.41739 4 2461136 15.3680166 -23.678546 403170.357 218.52123 5 2461137 16.2220213 -26.420454 404567.350 229.50203 6 2461138 17.1023333 -27.969343 404958.133 240.40645 7 2461139 17.9965909 -28.233665 404197.979 251.29347 8 2461140 18.8892916 -27.186353 402211.971 262.23282 9 2461141 19.7665040 -24.866978 399013.363 273.30232 10 2461142 20.6199398 -21.371110 394716.858 284.58392 11 2461143 21.4487792 -16.834765 389544.831 296.15820 12 2461144 22.2593092 -11.424304 383823.620 308.09700 13 2461145 23.0634824 -05.337695 377966.234 320.45386 14 2461146 23.8773499 +01.183273 372438.266 333.25291 15 2461147 0.7195633 +07.835133 367706.482 346.47827 16 2461148 1.6093276 +14.238121 364175.405 0.06718 17 2461149 2.5625741 +19.937760 362124.627 13.91176 18 2461150 3.5852915 +24.439841 361664.579 27.87168 19 2461151 4.6654398 +27.293606 362726.021 41.79662 20 2461152 5.7699118 +28.211827 365087.537 55.55140 21 2461153 6.8540087 +27.166043 368431.218 69.03564 22 2461154 7.8798990 +24.381901 372407.905 82.19235 23 2461155 8.8295317 +20.236140 376693.710 95.00525 24 2461156 9.7044925 +15.136176 381026.732 107.48898 25 2461157 10.5185039 +09.447605 385221.309 119.67681 26 2461158 11.2902043 +03.474891 389163.188 131.60932 27 2461159 12.0388925 -02.528472 392791.822 143.32615 28 2461160 12.7825981 -08.341060 396076.439 154.86110 29 2461161 13.5371717 -13.756533 398991.813 166.24055 30 2461162 14.3154194 -18.572903 401498.373 177.48449 xx 2461163 15.1257717 -22.590247 403529.772 188.60963 xx 2461164 15.9705259 -25.618562 404989.386 199.63343 xx JD_Num RA_Hr Declin° Dist_km Phase_Ang° Day ===========================================================================