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lunar data

+28-days orbit parameters

Lunar 14 SEP14 previous 28-days eq energy previous 28-days eq activity

2019 earth-Moon distance variance

2018 Lunar Distance

lunar phases

Source: usno aa

New Moon First Quarter Full Moon Last Quarter
--//----//--2019 Jan 21 05:162019 Jan 27 21:10
2019 Feb 04 21:042019 Feb 12 22:262019 Feb 19 15:532019 Feb 26 11:28
2019 Mar 06 16:042019 Mar 14 10:272019 Mar 21 01:432019 Mar 28 04:10
2019 Apr 05 08:502019 Apr 12 19:062019 Apr 19 11:122019 Apr 26 22:18
2019 May 04 22:452019 May 12 01:122019 May 18 21:112019 May 26 16:34
2019 Jun 03 10:022019 Jun 10 05:592019 Jun 17 08:312019 Jun 25 09:46
2019 Jul 02 19:162019 Jul 09 10:552019 Jul 16 21:382019 Jul 25 01:18
2019 Aug 01 03:122019 Aug 07 17:312019 Aug 15 12:292019 Aug 23 14:56
2019 Aug 30 10:37------

technical data

Source: nasa jpl

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 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
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 Revised: July 31, 2013                  Earth                              399
 
 GEOPHYSICAL PROPERTIES (revised Aug 15, 2018):
  Vol. Mean Radius (km)    = 6371.01+-0.02   Mass x10^24 (kg)= 5.97219+-0.0006
  Equ. radius, km          = 6378.137        Mass layers:
  Polar axis, km           = 6356.752          Atmos         = 5.1   x 10^18 kg
  Flattening               = 1/298.257223563   oceans        = 1.4   x 10^21 kg
  Density, g/cm^3          = 5.51              crust         = 2.6   x 10^22 kg
  J2 (IERS 2010)           = 0.00108262545     mantle        = 4.043 x 10^24 kg
  g_p, m/s^2  (polar)      = 9.8321863685      outer core    = 1.835 x 10^24 kg
  g_e, m/s^2  (equatorial) = 9.7803267715      inner core    = 9.675 x 10^22 kg
  g_o, m/s^2               = 9.82022         Fluid core rad  = 3480 km
  GM, km^3/s^2             = 398600.435436   Inner core rad  = 1215 km
  GM 1-sigma, km^3/s^2     =      0.0014     Escape velocity = 11.186 km/s
  Rot. Rate (rad/s)        = 0.00007292115   Surface area:
  Mean sidereal day, hr    = 23.9344695944     land          = 1.48 x 10^8 km
  Mean solar day 2000.0, s = 86400.002         sea           = 3.62 x 10^8 km
  Mean solar day 1820.0, s = 86400.0         Love no., k2    = 0.299
  Moment of inertia        = 0.3308          Atm. pressure   = 1.0 bar
  Mean temperature, K      = 270             Volume, km^3    = 1.08321 x 10^12
  Mean effect. IR temp, K  = 255             Magnetic moment = 0.61 gauss Rp^3
  Geometric albedo         = 0.367           Vis. mag. V(1,0)= -3.86
  Solar Constant (W/m^2)   = 1367.6 (mean), 1414 (perihelion), 1322 (aphelion)
 HELIOCENTRIC ORBIT CHARACTERISTICS:
  Obliquity to orbit, deg  = 23.4392911  Sidereal orb period  = 1.0000174 y
  Orbital speed, km/s      = 29.79       Sidereal orb period  = 365.25636 d
  Mean daily motion, deg/d = 0.9856474   Hill's sphere radius = 234.9       
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