On the center of Watts' datum for the lunar marginal zone

Details On the center of Watts' datum for the lunar marginal zone On the center of Watts' datum for the lunar marginal zone

May 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981aj.....86..800m&link_type=abstract

Astronomical Journal, vol. 86, May 1981, p. 800, 801.

Astronomy and Astrophysics

Astronomy

5

Center Of Mass, Geocentric Coordinates, Lunar Limb, Moon, Equations Of Motion, Error Analysis, Laser Range Finders, Lunar Rangefinding, Numerical Integration, Occultation, Moon, Limbs, Analysis, Equations Of Motion, Orbits, Observations, Mathematical Models, Procedure, Motion

Scientific paper

Correction of a previous determination (Mulholland, 1977) of the three-dimensional location of the center of Watts' datum for lunar-limb corrections, removing a contamination from the FK4 equinox error, results in a longitude component x2 of -1.08 + or - 0.5 km (-0.58 + or - 0.27 arcsec), which is in good agreement with Morrison and Appleby's (1981) recent determination. It is noted that the latitude component x3 is irrecoverable and that the radial component x1 is unaffected by the error. Therefore, the revised selenocentric vector of the Watts center is x = (+6.9, -1.08,...) + or - (2,4,0.5,...) km.

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