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Gravity
Recovery and Interior Laboratory
|
August 31, 2022.
The
GRAIL Gravity Model dataset
has been migrated to the PDS4 standard. Please see
readme.txt for more information.
March 30, 2021.
A new spherical harmonic model, GRGM1200L, is released from the Goddard Space Flight Center
GRAIL
team as part of Sander Goossens' LDAP 2014 project. Please see
errata.txt on the
LGRS RDR archive volume for more information. |
The GRAIL mission placed two spacecraft (GRAIL-A and
GRAIL-B), flying in formation, into orbit around the
Moon to study its internal structure. By very precisely
measuring the distance of one orbiter relative to the
other, the orbital perturbations caused by the Moon
could be observed. Combining this with the orbiter
position as determined from Earth-based observations,
the mass distribution on the Moon could be determined.
The GRAIL spacecraft entered lunar orbit on December 31,
2011, and January 1, 2012. The mission ended on December
17, 2012, with a controlled impact of both spacecraft on
the lunar surface.
GRAIL Data Sets
|
Raw Data Products |
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LGRS EDR -
Raw science data originating from the Lunar Gravity
Ranging System (LGRS) on each of the two spacecraft
comprising the GRAIL mission. |
|
RSS EDR - Raw radio science
data and ancillary files from the GRAIL mission. |
|
Calibrated Data Products |
|
LGRS CDR - Calibrated and
resampled data from the Lunar Gravity and Ranging
System (LGRS) on each of the two spacecraft
comprising the GRAIL mission. |
|
Derived Data Products |
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LGRS
RDR (PDS4)- Lunar gravitational field, NASA
Level 2 data and SPICE geometry and navigation
kernels created by the GRAIL SDS. |
|
Ancillary Data Products |
|
NAIF GRAIL SPICE Archive - Complete set
of SPICE kernels created by GRAIL Navigation and
archived by NAIF. |
Online Tools
Related Information
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