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Availability: Archived at NSSDC, accessible from elsewhere

Time span: 1986-01-24 to 1986-01-25


This description was generated automatically using input from the Planetary Data System.

This data set includes data from the Low Field Magnetometer (LFM) in the solar wind during the Uranus encounter. The encounter data (1986-01-24T07:00:00 -> 1986-01-25T04:00:00) have been averaged from the 60ms instrument sample rate to a 1.92 second resampled rate and are provided in the Uranus Longitude (U1) coordinate system. Magnetometer data in the solar wind are given in Heliographic coordinates and are also available in a separate dataset. The dataset consists of the following columns: 1) ctime (decimal seconds since 1966-01-01T00:00:00.000), 2) pdstime (ISO standard time format), 3-5) spacecraft clock (m65536,m60,fds-line), 6) magnetometer id (1 = LFM, 2 = HFM), 7) Br (radial component), 8) Bphi (longitudinal component), 9) Btheta (colatitudinal component), 10) Bmag (magnitude of the average components), 11) avg_Bmag (average of the magnitude of the raw components), 12) Lambda (longitude = tan^-1(Bt/Br)), 13) Delta (latitude = sin^-1(Bn/avg_Bmag) ), 14-16) rms vector (Pythagorean root mean square deviation of the component averages), 17) npts (number of points in average), 18) flag a character string which indicates software or s/c hardware intervention which reduces confidence in the data (NULL flags represent 'good' data). The U1 coordinate system is a non-inertial spherical coordinate system that rotates with Uranus with a period of 17.24 hours. The system components are: R - Radial along the Uranus-S/C line, positive away from Uranus, Phi - east longitudinal component, Theta - colatitudinal component. An ancillary data file containing the derived spacecraft magnetic field is provided with this data at a 48 second sample rate. These data provide zero level offsets used in the data processing. S/C field data is provided in spacecraft coordinates. SAMPLING_PARAMETER_NAME = TIME SAMPLING_PARAMETER_RESOLUTION = 1.920000 MINIMUM_SAMPLING_PARAMETER = 19770820120000.000000 MAXIMUM_SAMPLING_PARAMETER = UNK SAMPLING_PARAMETER_INTERVAL = 1.920000 MINIMUM_AVAILABLE_SAMPLING_INT = 0.060000 SAMPLING_PARAMETER_UNIT = SECOND DATA_SET_PARAMETER_NAME = MAGNETIC FIELD VECTOR NOISE_LEVEL = 0.006000 DATA_SET_PARAMETER_UNIT = NANOTESLA

These data are available on-line from the Planetary Data System (PDS) at:

Alternate Names

  • VG2-U-MAG-4-RDR-U1COORDS-1.92SEC-V1.0


  • Planetary Science: Fields and Particles

Additional Information



Questions and comments about this data collection can be directed to: Dr. Edwin V. Bell, II



NameRoleOriginal AffiliationE-mail
Dr. Norman F. NessData ProviderUniversity of Delaware
Dr. Norman F. NessGeneral ContactUniversity of Delaware
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