SPACECRAFT

TS1 - TRACERS1 (TRACERS-A); NORAD ID: 64870; COSPAR ID: 2025-154B

TS2 - TRACERS2 (TRACERS-B); NORAD ID: 64873; COSPAR ID: 2025-154E

REGIONS

BOR - back orbit

ROI - region of interest

note: Only MAG and MSC have separate BOR & ROI cdf’s, they are combined into one CDF for the other datasets.

INSTRUMENTS

ACI - Analyzer of Cusp Ions

ACE - Analyzer of Cusp Electrons

EFI - Electric Fields Instrument

MAG - Fluxgate Magnetometer

MAGIC - MAGnetometers for Innovation and Capability

MSC - Magnetic search coil

DATASET SUFFIXES

BAC - B (magnetic) field and "ac" is for AC as in alternating current

BDC - B (magnetic) field and "dc" is for DC as in direct current

EAC - E (electric) field and "ac" is for AC as in alternating current

EDC - E (electric) field and "dc" is for DC as in direct current

IPD - Ion Particle Distribution

DEF - Differential Energy Fluxes

SPS – Samples per second, i.e. 16sps for 16 samples per second

COORDINATE FRAMES, for more detail on  coordinate frames see appendix of https://doi.org/10.1007/s11214-025-01199-x

GEOPHYSICAL COORDINATE FRAMES

GEI - Geocentric Equatorial Inertial

GEO – Geographic

GSE - Geocentric Solar Ecliptic

GSM - Geocentric Solar Magnetic

SM - Solar Magnetic

MAG - Geomagnetic

FAC - Field-Aligned Coordinates

SPACECRAFT-SPECIFIC COORDINATE FRAMES

FVC - Field Velocity Coordinates

TFS - TRACERS Field Sun

TSS - TRACERS Spin Sun

TSCS - TRACERS Spacecraft Coordinate System (body fixed so rotates with spacecraft)

TBS -  TRACERS Spinning Body (also body fixed so rotates with spacecraft)

NEC - North East Center