Info

INCLINATION OF ORBIT TO ECLIPTIC (OSCILLATING ± 0.16 DEG WITH PERIOD OF 173 DAYS)

6.1463 Deg

SIDEREAL PERIOD (RELATIVE TO FIXED STARS) WHERE T IS IN CENTURIES FROM 1900.0

27.32166140 + T x 1 £ x 10~7 Ephemeris Days

SYNODICAL MONTH (NEW MOON TO NEW MOON)

29.6306882 + T x 1.6 x 10"7 Ephemeris Days

TROPICAL MONTH (EQUINOX TO EQUINOX)

27.32168214 + T x 13 x 10~7 Ephemeris Days

ANOMALISTIC MONTH (PERIGEE TO PERIGEE)

27.5545506 - T x 4 x 10-7 Days

NODICAL MONTH (NODE TO NODE)

27.212220 Days

NUTATION PERIOD = PERIOD OF ROTATION OF THE NODE (ROTROGRADE)

18.61 Tropical Years

PERIOD OF ROTATION OF PERIGEE (DIRECT)

8.85 Years

OPTICAL LIBRATION IN LONGITUDE (SELENOCENTRIC DISPLACEMENT)

t 7.6 Deg

OPTICAL LIBRATION'IN LATITUDE (SELENOCENTRIC DISPLACEMENT)

i 6.7 Deg

&IRFACE AREA NEVER VISIBLE FROM EARTH

41%

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