Mars Atmosphere and Volatile EvolutioN (MAVEN) Magnetometer (MAG) Calibrated PDS Archive Bundle LID = urn:nasa:pds:maven.mag.calibrated Bundle Description ================== Overview -------- This bundle contains MAG supplied ASCII files containing a time series of magnetic-field vectors in geophysical units (nanotesla, nT) that have been corrected for instrumental and spacecraft effects (calibrated). In addition, these data have been transformed into physically meaningful coordinate systems. MAG data products are generated for all mission phases. Version History --------------- Bundle Modification Version Date Description ------- ------------ --------------------------------------------------- 1.0 2015-06-03 MAVEN Release 1 (2015-06-05) 1.1 2015-08-14 MAVEN Release 2 (2015-08-17) 1.2 2015-11-13 MAVEN Release 3 (2015-11-16) 1.3 2016-02-12 MAVEN Release 4 (2016-02-15) 1.4 2016-06-16 MAVEN Release 5 (2016-06-16): Incremental release with coverage 2014-10-10 to 2016-02-14. 1.5 2016-08-19 MAVEN Release 6 (2016-08-15): Incremental release with coverage 2014-10-10 to 2016-05-14. 1.5 2016-08-19 MAVEN Release 7 (2016-11-15): Incremental release with coverage 2016-05-15 to 2016-08-14. Coordinate Systems ------------------ Solar Equatorial (se) Coordinates: The solar equatorial (se) coordinate system and it will be used for cruise data only. This system is useful for heliospheric studies and mimics the RTN system that has been widely employed for interplanetary cruise. The "se" coordinate system uses the vector from the sun to the spacecraft (x) as the primary reference vector; the secondary reference vector is orthogonal to x and lies in the solar equatorial plane (y), and the third completes the system (z). Sun-State (ss) Coordinates: The ss coordinate system is defined using the instantaneous Mars-Sun vector as the primary reference vector (x direction). The X-axis lies along this vector and is taken to be positive toward the Sun. The Mars orbital velocity vector is the second vector used to define the coordinate system; the y axis lies in the plane determined by the Mars-Sun vector and the velocity vector and is orthogonal to the x axis (very nearly the negative of the velocity vector). The vector cross product of x and y yields a vector z parallel to the northward (upward) normal of the orbit plane of Mars. This system is sometimes called a sun-state (ss) coordinate system since its principal vectors are the Sun vector and the Mars state vector. It is identical to the MSO system. Planetocentric (pc) Coordinates: The planetocentric (pc) coordinate system is body-fixed and rotates with the body as it spins on its axis. The body rotation axis is the primary vector used to define this coordinate system. Z is taken to lie along the rotation axis and be positive in the direction of positive angular momentum. The X-axis is defined to lie in the equatorial plane of the body, perpendicular to Z, and in the direction of the prime meridian as defined by the International Astronomical Union (IAU). The Y axis completes the right-handed set. Payload (pl) Coordinates: The sc body upper panel face (upon which the high gain antenna (HGA) sits) lies in the x – y plane, with the x axis parallel to the solar array hinge line, pointing down towards the deployed auxiliary pointed platform (APP). The y axis is parallel to the other face and is defined such that the sc z axis (x cross y) is aligned with the HGA boresight (approximately). Bundle Contents =============== Collections ----------- This bundle includes the following collections: * PC - calibrated science vector magnetic-field and position data in Planetocentric coordinates vs. time (LID = urn:nasa:pds:maven.mag.calibrated:data.pc) * SS - calibrated science vector magnetic-field and position data in data in Sun-State (MSO) coordinates vs. time (LID = urn:nasa:pds:maven.mag.calibrated:data.ss) * PL - calibrated science vector magnetic-field and position data in payload (spacecraft) coordinates vs. time (LID = urn:nasa:pds:maven.mag.calibrated:data.pl) Data File Naming ---------------- Data files in this bundle are named according to the following convention: mvn_swi_l2__
_v_r.cdf where: = A descriptor used to identify the data file type = 4-digit year of data coverage date = 2-digit month of year of data coverage date
= 2-digit day of month of data coverage date = 2-digit software version = 2-digit data file version under the specified software version Key Documents ============= Connerney, J., and P. Lawton, MAVEN MAG PDS Archive SIS - This document describes the format and content of the MAVEN Magnetometer (MAG) Planetary Data System (PDS) data archive. It includes descriptions of the Standard Data Products and associated metadata, and the volume archive format, content, and generation pipeline. (LID = urn:nasa:pds:maven.mag.calibrated:document:sis). Contacts ======== This volume was produced for the Planetary Data System (PDS) at the Planetary Plasma Interactions (PPI) node at the University of California, Los Angeles (UCLA). The data files were generated by Dr. Patricia Lawton at Goddard Space Flight Center (GSFC) in Greenbelt, Maryland. The data were delivered to the PPI node via the MAVEN Science Data Center (SDC) located at the Laboratory for Atmospheric and Space Physics (LASP) in Boulder, Colorado. The PDS metadata were generated at the PPI node. For questions regarding this archive, please contact Mr. Joseph Mafi at the PDS PPI Node: Email jmafi@igpp.ucla.edu Telephone 310-206-6073 For question regarding the data, please contact Dr. Jack Connerney: Internet Jack.Connerney@nasa.gov For questions regarding PDS Standards or other archives available from the PDS, please contact PDS Operator at the PDS Engineering Node (at JPL): Email pds_operator@jpl.nasa.gov Telephone 818-354-4321 The PDS assumes no legal liability for errors on this archive. All users are encouraged to verify the correctness of the data prior to submitting any publications or other work based on these data. Please report errors on this archive to the PPI of the PDS through contact information provided above.