MMS 2 Magnetic Ephemeris and Coordinates (MEC) and Support (Tsyganenko 1989 model, Quiet conditions), Level 2 (L2), Burst Mode, 30 ms Data

Magnetospheric Multiscale 2 (MMS 2) spacecraft position, velocity, attitude, angular momentum vector, and magnetic ephemeris and coordinates (MEC), Level-2 science data at Burst (30 ms) time resolution. The Magnetic ephemeris data are calculated by using the Tsyganenko 1989 magnetic field model for quiet magnetospheric conditions. Many variables are included in this data product including the magnetic field measured at the spacecraft. If possible, the northern and southern hemisphere footpoints of the spacecraft are found by tracing along the magnetic field line threading through the spacecraft per the given Tsyganenko and internal magnetic field models. The northern and southern hemisphere loss cone angles are also given. The magnetic field strength at the footpoints and the minimum magnetic field strength along the field line are also calculated by using the field models. Other variables list the spacecraft L-shell, the magnetic local time, the magnetic latitude and longitude, and whether the threading field line is open, closed, etc. Rotational quaternions are provided to allow coordinate transformation from GEI into 11 other coordinate systems including BSC, GEO, GSE, GSE2000, GSE, and SM. The list of ancillary variables includes the dipole tilt angle, the Dst and Kp actvity indices, and separate flags that denote satellite eclipse by the Earth and Moon.

Data and Resources

Additional Info

Field Value
Maintainer NASA Space Physics Data Facility
Last Updated March 16, 2026, 19:46 (UTC)
Created August 21, 2025, 13:43 (UTC)
accessLevel public
bureauCode {026:00}
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
harvest_object_id 4fe94492-2f46-4853-a19d-0a2afb37d674
harvest_source_id b99e41c6-fe79-4c19-bbc3-9b6c8111bfac
harvest_source_title Science Discovery Engine
identifier https://doi.org/10.48322/edy0-fc92
landingPage https://doi.org/10.48322/edy0-fc92
license https://www.usa.gov/government-works
modified 2026-03-09T22:16:00Z
programCode {026:000}
publisher MMS Science Data Center;NASA Space Physics Data Facility (SPDF) Coordinated Data Analysis Web (CDAWeb) Data Services
resource-type Dataset
source_datajson_identifier true
source_hash 366c574d0d418fd32a70df1e36cc996d41661b7a8d5ca7f5817ce51bd45a9c1d
source_schema_version 1.1
theme {Heliophysics}