******************************************************************************* Revised: July 31, 2013 Moon / (Earth) 301 GEOPHYSICAL DATA (updated 2018-Aug-15): Vol. mean radius, km = 1737.53+-0.03 Mass, x10^22 kg = 7.349 Radius (gravity), km = 1738.0 Surface emissivity = 0.92 Radius (IAU), km = 1737.4 GM, km^3/s^2 = 4902.800066 Density, g/cm^3 = 3.3437 GM 1-sigma, km^3/s^2 = +-0.0001 V(1,0) = +0.21 Surface accel., m/s^2 = 1.62 Earth/Moon mass ratio = 81.3005690769 Farside crust. thick. = ~80 - 90 km Mean crustal density = 2.97+-.07 g/cm^3 Nearside crust. thick.= 58+-8 km Heat flow, Apollo 15 = 3.1+-.6 mW/m^2 Mean angular diameter = 31'05.2" Heat flow, Apollo 17 = 2.2+-.5 mW/m^2 Sid. rot. rate, rad/s = 0.0000026617 Geometric Albedo = 0.12 Mean solar day = 29.5306 d Obliquity to orbit = 6.67 deg Orbit period = 27.321582 d Semi-major axis, a = 384400 km Eccentricity = 0.05490 Mean motion, rad/s = 2.6616995x10^-6 Inclination = 5.145 deg Apsidal period = 3231.50 d Nodal period = 6798.38 d Perihelion Aphelion Mean Solar Constant (W/m^2) 1414+-7 1323+-7 1368+-7 Maximum Planetary IR (W/m^2) 1314 1226 1268 Minimum Planetary IR (W/m^2) 5.2 5.2 5.2 ******************************************************************************** ******************************************************************************* Ephemeris / WWW_USER Tue Apr 30 03:54:18 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: Moon (301) {source: DE441} Center body name: Earth (399) {source: DE441} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 2006-Sep-15 00:00:00.0000 UT Stop time : A.D. 2006-Sep-17 00:00:00.0000 UT Step-size : 60 minutes ******************************************************************************* Target pole/equ : MOON_ME {East-longitude positive} Target radii : 1737.4, 1737.4, 1737.4 km {Equator_a, b, pole_c} Center geodetic : 0.0, 0.0, -6378.137 {E-lon(deg),Lat(deg),Alt(km)} Center cylindric: 0.0, 0.0, 0.0 {E-lon(deg),Dxy(km),Dz(km)} Center pole/equ : ITRF93 {East-longitude positive} Center radii : 6378.137, 6378.137, 6356.752 km {Equator_a, b, pole_c} Target primary : Earth Vis. interferer : MOON (R_eq= 1737.400) km {source: DE441} Rel. light bend : Sun {source: DE441} Rel. lght bnd GM: 1.3271E+11 km^3/s^2 Atmos refraction: NO (AIRLESS) RA format : HMS Time format : CAL Calendar mode : Mixed Julian/Gregorian EOP file : eop.240429.p240723 EOP coverage : DATA-BASED 1962-JAN-20 TO 2024-APR-29. PREDICTS-> 2024-JUL-22 Units conversion: 1 au= 149597870.700 km, c= 299792.458 km/s, 1 day= 86400.0 s Table cut-offs 1: Elevation (-90.0deg=NO ),Airmass (>38.000=NO), Daylight (NO ) Table cut-offs 2: Solar elongation ( 0.0,180.0=NO ),Local Hour Angle( 0.0=NO ) Table cut-offs 3: RA/DEC angular rate ( 0.0=NO ) ******************************************************************************* Date__(UT)__HR:MN R.A._____(ICRF)_____DEC ********************************************** $$SOE 2006-Sep-15 00:00 05 52 29.54 +28 42 59.3 2006-Sep-15 01:00 05 54 56.66 +28 43 10.1 2006-Sep-15 02:00 05 57 23.62 +28 43 11.0 2006-Sep-15 03:00 05 59 50.41 +28 43 02.0 2006-Sep-15 04:00 06 02 17.03 +28 42 43.0 2006-Sep-15 05:00 06 04 43.46 +28 42 14.3 2006-Sep-15 06:00 06 07 09.70 +28 41 35.7 2006-Sep-15 07:00 06 09 35.75 +28 40 47.4 2006-Sep-15 08:00 06 12 01.60 +28 39 49.3 2006-Sep-15 09:00 06 14 27.23 +28 38 41.6 2006-Sep-15 10:00 06 16 52.66 +28 37 24.2 2006-Sep-15 11:00 06 19 17.87 +28 35 57.2 2006-Sep-15 12:00 06 21 42.85 +28 34 20.7 2006-Sep-15 13:00 06 24 07.60 +28 32 34.7 2006-Sep-15 14:00 06 26 32.11 +28 30 39.2 2006-Sep-15 15:00 06 28 56.38 +28 28 34.3 2006-Sep-15 16:00 06 31 20.40 +28 26 20.0 2006-Sep-15 17:00 06 33 44.17 +28 23 56.4 2006-Sep-15 18:00 06 36 07.69 +28 21 23.5 2006-Sep-15 19:00 06 38 30.94 +28 18 41.4 2006-Sep-15 20:00 06 40 53.92 +28 15 50.2 2006-Sep-15 21:00 06 43 16.63 +28 12 49.9 2006-Sep-15 22:00 06 45 39.06 +28 09 40.5 2006-Sep-15 23:00 06 48 01.20 +28 06 22.1 2006-Sep-16 00:00 06 50 23.06 +28 02 54.7 2006-Sep-16 01:00 06 52 44.63 +27 59 18.5 2006-Sep-16 02:00 06 55 05.91 +27 55 33.4 2006-Sep-16 03:00 06 57 26.88 +27 51 39.6 2006-Sep-16 04:00 06 59 47.55 +27 47 37.0 2006-Sep-16 05:00 07 02 07.91 +27 43 25.8 2006-Sep-16 06:00 07 04 27.96 +27 39 06.0 2006-Sep-16 07:00 07 06 47.69 +27 34 37.7 2006-Sep-16 08:00 07 09 07.11 +27 30 00.9 2006-Sep-16 09:00 07 11 26.20 +27 25 15.7 2006-Sep-16 10:00 07 13 44.97 +27 20 22.1 2006-Sep-16 11:00 07 16 03.41 +27 15 20.3 2006-Sep-16 12:00 07 18 21.51 +27 10 10.2 2006-Sep-16 13:00 07 20 39.28 +27 04 51.9 2006-Sep-16 14:00 07 22 56.72 +26 59 25.6 2006-Sep-16 15:00 07 25 13.81 +26 53 51.2 2006-Sep-16 16:00 07 27 30.56 +26 48 08.9 2006-Sep-16 17:00 07 29 46.97 +26 42 18.7 2006-Sep-16 18:00 07 32 03.03 +26 36 20.6 2006-Sep-16 19:00 07 34 18.74 +26 30 14.7 2006-Sep-16 20:00 07 36 34.10 +26 24 01.2 2006-Sep-16 21:00 07 38 49.10 +26 17 40.0 2006-Sep-16 22:00 07 41 03.75 +26 11 11.2 2006-Sep-16 23:00 07 43 18.05 +26 04 35.0 2006-Sep-17 00:00 07 45 31.98 +25 57 51.2 $$EOE ******************************************************************************* Column meaning: TIME Times PRIOR to 1962 are UT1, a mean-solar time closely related to the prior but now-deprecated GMT. Times AFTER 1962 are in UTC, the current civil or "wall-clock" time-scale. UTC is kept within 0.9 seconds of UT1 using integer leap-seconds for 1972 and later years. Conversion from the internal Barycentric Dynamical Time (TDB) of solar system dynamics to the non-uniform civil UT time-scale requested for output has not been determined for UTC times after the next July or January 1st. Therefore, the last known leap-second is used as a constant over future intervals. Time tags refer to the UT time-scale conversion from TDB on Earth regardless of observer location within the solar system, although clock rates may differ due to the local gravity field and no analog to "UT" may be defined for that location. Any 'b' symbol in the 1st-column denotes a B.C. date. First-column blank (" ") denotes an A.D. date. CALENDAR SYSTEM Mixed calendar mode was active such that calendar dates after AD 1582-Oct-15 (if any) are in the modern Gregorian system. Dates prior to 1582-Oct-5 (if any) are in the Julian calendar system, which is automatically extended for dates prior to its adoption on 45-Jan-1 BC. The Julian calendar is useful for matching historical dates. The Gregorian calendar more accurately corresponds to the Earth's orbital motion and seasons. A "Gregorian-only" calendar mode is available if such physical events are the primary interest. NOTE: "n.a." in output means quantity "not available" at the print-time. 'R.A._____(ICRF)_____DEC' = Astrometric right ascension and declination of the target center with respect to the observing site (coordinate origin) in the reference frame of the planetary ephemeris (ICRF). Compensated for down-leg light-time delay aberration. Units: RA in hours-minutes-seconds of time, HH MM SS.ff{ffff} DEC in degrees-minutes-seconds of arc, sDD MN SC.f{ffff} Computations by ... Solar System Dynamics Group, Horizons On-Line Ephemeris System 4800 Oak Grove Drive, Jet Propulsion Laboratory Pasadena, CA 91109 USA General site: https://ssd.jpl.nasa.gov/ Mailing list: https://ssd.jpl.nasa.gov/email_list.html System news : https://ssd.jpl.nasa.gov/horizons/news.html User Guide : https://ssd.jpl.nasa.gov/horizons/manual.html Connect : browser https://ssd.jpl.nasa.gov/horizons/app.html#/x API https://ssd-api.jpl.nasa.gov/doc/horizons.html command-line telnet ssd.jpl.nasa.gov 6775 e-mail/batch https://ssd.jpl.nasa.gov/ftp/ssd/hrzn_batch.txt scripts https://ssd.jpl.nasa.gov/ftp/ssd/SCRIPTS Author : Jon.D.Giorgini@jpl.nasa.gov ******************************************************************************* !$$SOF COMMAND = '301' START_TIME = '2006-9-15' STOP_TIME = '2006-9-17' STEP_SIZE = '1 hours' QUANTITIES = '1'