Data Access
The Explorer 43 Measurement of Magnetic Fields (MMF) data at 15.36 s resolution in various coordinate systems. These data consists of magnetic field vectors, variances, and spacecraft position measurements in several coordinate systems.
Version:2.3.0
The Explorer 43 Measurement of Magnetic Fields (MMF) data at 15.36 s resolution in various coordinate systems. These data consists of magnetic field vectors, variances, and spacecraft position measurements in several coordinate systems.
| Role | Person | |
|---|---|---|
| 1. | PrincipalInvestigator | spase://SMWG/Person/Norman.F.Ness |
| 2. | MetadataContact | spase://SMWG/Person/James.M.Weygand |
Information about the magnetometer and other instruments onboard Explorer 43.
Direct link to the Explorer 43 MMF data in ascii format.
Universal time columns from left to right are: year, day of year, and milliseconds of the day.
Universal Time expressed using a 3-column year, day of year (Jan 1 = 0), and Millisec (Elapsed millisec in the day).
8 bit counts. Order: from left to right: 2^7, 2^6,2^5,...2^0. Flags: from left to right: black, 90 degrees, 0 degrees, Heater, CAL, AUTO, range 2, and range, 1.
Orbit number of Explroer 43 from the beginning of the mission.
No description given.
No description given.
No description given.
No description given.
Averaged over 15.36 s. F1 = (1/N)*Sum to n of F_i where F_i is computed by the PAYAVG subroutine over 1.28 seconds. The PAYAVG subroutne was not available with the data or data descriptio.
Averaged over 15.36 s. Fl = SQRT( ((1/N) ∑ X_i)^2 + ((1/N) ∑ Y_i)^2 + ((1/N) ∑ Z_i)^2 ) where X_i, Y_i, and Z_i are computed by the PAYAVG subroutine over 1.28 seconds. Sum from i=1 to N.
Averaged over 15.36 s. Theta is sin^{-1}(Bz/B_manitude).
Averaged over 15.36 s.
Variance matrix over 15.36 s. [Vxx,--,--;Vyx,Vyy,--;Vzx,Vzy,VZZ]. e.g., Vxx = ( (N ∑ X^{2}{i}) - ∑ X{i} ∑ X_{i} )/(N(N-1)). Vzy = ( (N ∑ Z_{i}Y_{i}) - ∑ Z_{i} ∑ Y_{i} )/(N(N-1)). Sum from i=1 to N.
Only includes 6 elements of the 3 by 3 matrix since three elements are repeated..
Number of sequences over which statistics were comuted.
Number of detail points over which statistics were comuted.
Jan 1 = 0.
Location of the spacecraft in GSE coordinates in units of kilometers.
Location of the spacecraft in GSM coordinates in units of kilometers.
Theoretical geomagnetic field but the magnetic field model is unclear.
Rotation matrix from GSE to GSM
Rotation matrix from celestial inertial to GSE
Not clear what this is the right ascension of. Celestial Equatorial Coordinate System?
Not clear what this is the right ascension of. Celestial Equatorial Coordinate System?