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 Jan 02 - Fri Local Time = 07:47:54 Standard Time Std. Time Zone Offset = 00:00:00 Applied Delta T = +00:00:00 Working Julian Date = 2461042.82493056 TT Julian Day Number = JDNumLT Longitude = -76.833611111° = -05h 07m 20.1s (W=Negative) Latitude = +42.752194444° Elevation = 0 m Local Sidereal Time = 09h 28m 26.308s = 9.473974557h = 142.109618349° =========================================================================== Geocentric Lunar Ephemeris Statistics Right Ascension = 05h 44m 45.85s = 5.7460700h = 86.1910500° Declination = +28° 15' 57.26" = +28.265906° True Distance = 360497.44 km = 224002.73 mi Angular Diameter = 00° 33' 07.81" = 33.130131' = 0.552168845° Angular Semi-Diameter = 00° 16' 33.90" = 16.565065' = 0.276084422° Phase Angle = 164.71616° Horizontal Parallax = 60.825852' = 1.013764194° Light/Signal Time = 1.175 sec (surface-to-surface) =========================================================================== Local Topocentric and Horizon Coordinates of Moon Topocentric RA = 05h 41m 56.20s = 5.6989448h = 85.4841713° Topocentric Decl = +27° 51' 14.55" = +27.854040° Local Hour Angle = +03h 43m 40.46s = +55.9185683° (E=Negative) Azimuth = 91.00200° (Measured clockwise from S=0°) = 271.00200° (Measured clockwise from N=0°) Direction = W Altitude = +42.40029° (Above Local Horizon - No refractions applied) =========================================================================== Geocentric Lunar ephemeris table for each day of Jan. 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 2461039 1.7690593 +15.049597 368589.232 111.99455 xx 2461040 2.7050479 +20.500684 364766.353 125.42597 xx 2461041 3.7225834 +24.820518 361944.944 139.17331 xx 2461042 4.8137848 +27.522625 360486.646 153.13604 1 2461043 5.9447667 +28.239871 360649.511 167.17146 2 2461044 7.0635200 +26.878703 362525.456 181.11540 3 2461045 8.1224300 +23.668252 366009.117 194.81085 4 2461046 9.0968521 +19.055331 370809.409 208.13438 5 2461047 9.9865425 +13.539710 376498.852 221.01214 6 2461048 10.8063351 +07.560073 382583.032 233.42238 7 2461049 11.5769205 +01.456332 388569.975 245.38811 8 2461050 12.3196422 -04.519827 394025.307 256.96486 9 2461051 13.0544072 -10.176362 398607.786 268.22799 10 2461052 13.7989544 -15.350911 402086.301 279.26203 11 2461053 14.5682226 -19.886553 404342.279 290.15251 12 2461054 15.3731046 -23.616949 405361.698 300.97996 13 2461055 16.2184104 -26.364570 405219.914 311.81585 14 2461056 17.1006731 -27.955558 404061.499 322.71980 15 2461057 18.0074240 -28.250493 402076.653 333.73814 16 2461058 18.9197207 -27.180853 399475.804 344.90375 17 2461059 19.8178820 -24.773029 396464.540 356.23738 18 2461060 20.6877086 -21.146710 393221.763 7.75029 19 2461061 21.5240164 -16.490956 389884.423 19.44815 20 2461062 22.3306762 -11.033766 386541.917 31.33501 21 2461063 23.1186335 -05.019601 383241.920 43.41691 22 2461064 23.9036572 +01.299111 380007.161 55.70358 23 2461065 0.7045826 +07.657115 376860.023 68.20776 24 2461066 1.5417660 +13.761851 373849.483 80.94156 25 2461067 2.4347146 +19.276008 371073.447 93.91005 26 2461068 3.3974701 +23.810077 368689.339 107.10335 27 2461069 4.4311149 +26.947036 366907.223 120.48883 28 2461070 5.5163657 +28.320878 365963.046 134.00667 29 2461071 6.6141706 +27.736367 366074.969 147.57093 30 2461072 7.6795260 +25.257794 367392.018 161.07768 31 2461073 8.6799890 +21.191418 369949.041 174.41896 xx 2461074 9.6043875 +15.975945 373641.852 187.49852 xx 2461075 10.4591751 +10.063983 378230.403 200.24510 xx JD_Num RA_Hr Declin° Dist_km Phase_Ang° Day ===========================================================================