Mascons: Lunar Mass Concentrations

  title={Mascons: Lunar Mass Concentrations},
  author={P. M. Muller and William L. Sjogren},
  pages={680 - 684}
Lunar Orbiter tracking data have been processed to supply a qualitatively consistent gravimetric map of the lunar nearside. While a simplified model was employed, the results indicate that there are large mass concentrations under the lunar ringed maria. These mass concentrations may have important implications for the various theories regarding lunar history. 
Lunar Gravity over Large Craters from Apollo 12 Tracking Data
The Doppler residuals from the Apollo 12 lunar module radio tracking data indicate large negative accelerations over the craters Ptolemaeus and Albategnius. The mass deficienicies required to produce
Lunar gravity: Apollo 16
Reduction of doppler radio tracking of the orbiting spacecraft has shown consistency with Apollo 14 data results and has revealed new gravity anomalies. Large craters are negative anomalies while
Nonexistence of Large Mascons at Mare Marginis and Mare Orientale
Simulations show that large masses at Mare Orientale and Mare Marginis would produce substantial accelerations, in complete disagreement with the actual Doppler tracking data obtained from a Lunar Orbiter experiment.
Lunar Prospector: Gravity Mapping
Lunar Prospector, the third mission of the NASA Discovery series, is scheduled to launch Oct. 24, 1997. One of the objectives of the mission is to map the gravity field of the Moon using radiometric
Lunar mascons: a near-surface interpretation.
Lunar mascons, interpreting lunar gravitational field anomalies over maria in terms of near- surface slab-like model for maria structure suggests that the structure of maria is more like a slab than a sphere.
Mars Gravity: High-Resolution Results from Viking Orbiter 2
Doppler radio-tracking data have provided detailed measurements for a martian gravity map extending from 30�S to 65�N in latitude and through 360� of longitude, revealing a huge anomaly associated with Olympus Mons, a mascon in Isidis Planitia, and other anomalies correlated with volcanic structure.
Moon: Two New Mascon Basins
Lunar gravity data and orbital photography indicate that there is a mascon basin approximately 1000 kilometers in diameter on the farside of the moon and that Mare Marginis is the flooded fraction of
Lunar Gravity Analysis from Long-Term Effects
The global lunar gravity field was determined from a weighted least squares analysis of the averaged classical element of the five Lunar Orbiters to find the values of the second-degree zonal and sectorial harmonics are compatible with those derived from libration data.
Lunar surface mass distribution from dynamical point-mass solution
Combined efforts of the Jet Propulsion Laboratory and Aerospace Corporation have provided a front side lunar gravity field using the Doppler tracking data from the United States Lunar Orbiters IV and


Lunar Gravity: Preliminary Estimates from Lunar Orbiter
Preliminary results include values of a set of harmonic coefficients throlugh degree 4 in the tesserals and degree 8 in the zonals that suggest that Moon is nearly homogeneous.
Lunar Orbiter: Tracking Data Indicate Properties of Moon's Gravitational Field
Results indicate that the spacecraft will probably not impact on the moon before it completes its photographic mission, but that it will probably do so in about 8 months.
SPODP - Single Precision Orbit Determination Program
Single Precision Orbit Determination program - computer program for accurate tracking and prediction of lunar and interplanetary spacecraft motion
Vistas in astronomy
LEASTQ-A program for leastsquares fitting segmented cubic polynomials having a continuous first derivative," Space Programs Summary (Jet Propulsion
  • 1968
LEASTQ-A program for leastsquares fitting segmented cubic polynomials having a continuous first derivative
  • Space Programs Summary (Jet Propulsion Laboratory
  • 1968