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Availability: Archived at NSSDC, accessible from elsewhere

Time span: 1986-01-21 to 1986-01-30


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 the near the Uranus encounter. The actual encounter data (1986-01-24T07:00:00 -> 1986-01-25T04:00:00) are provided in the Uranus Longitude coordinate system. The magnetometer data in the solar wind are given in Heliographic coordinates and the data have been averaged from the 9.6 second resampled data to a 48.0 second sampled rate. 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) Bt (tangential component), 9) Bn (normal 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 Heliographic coordinate system is defined by the spacecraft centered R, T, N coordinates whose unit vector are: R - along the Sun-spacecraft line, positive away from the Sun; T - parallel to Sun's equator, positive in the sense of Jupiter's motion; N - equal to R x T. 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 = 0.06 MINIMUM_SAMPLING_PARAMETER = 0.06 MAXIMUM_SAMPLING_PARAMETER = 0.06 SAMPLING_PARAMETER_INTERVAL = 48.0 MINIMUM_AVAILABLE_SAMPLING_INT = 48.0 SAMPLING_PARAMETER_UNIT = SECOND DATA_SET_PARAMETER_NAME = MAGNETIC FIELD VECTOR NOISE_LEVEL = 0.006 DATA_SET_PARAMETER_UNIT = NANOTESLA

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

Alternate Names



  • 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
Dr. John E. P. ConnerneyGeneral ContactNASA Goddard Space Flight
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