STEREO Mission Logo STEREO Data Server at UCLA

STEREO Level 1 Magnetometer Data

Coordinate Systems
The server provides both RTN coordinates and spacecraft coordinates. RTN is defined with R from the center of the Sun to STEREO. T is along the cross product of the Sun's rotation axis and the R direction so that T is roughly in the direction of planetary motion. N is along the R cross T direction, roughly northward so that the R-N plane contains the Sun's rotation axis. Spacecraft coordinates are defined with X toward the Sun (opposite R of RTN). Y and Z are along the spacecraft Y and Z directions which are oriented to optimize Earth communication and hence the coordinates systems may be oriented in quite different directions on the two observatories.

Data Resolution
Three data resolutions are provided in the Level 1 data: 1 Hz, 8 Hz, and 32 Hz burst mode. The 1Hz data is created from the 125ms data by overlapped averages. The averaged total field is also averaged from the high resolution total field and not from the averaged components. The 32 Hz data is not continuous.

Data Availability
Data are available in spacecraft and RTN coordinates beginning November 7, 2006. Since data must be first consolidated during a one month interval and processing is performed one month at a time, data availability is normally two to three months behind real time. If data are needed more rapidly, please use the beacon data that come to Earth and are made available in real time.

Due to the strain on our system, you may only request up to a month of 1Hz data or 7 days of 8Hz or 32Hz data at a time.

Available data
  • STEREO A - 2006 Nov 06 00:01:00 UTC to 2024 Feb 01 00:00:03 UTC
  • STEREO B - 2006 Nov 06 00:01:00 UTC to 2014 Sep 27 16:31:00 UTC
Coordinate System:
Time Range (UTC):
Start Date End Date

Disclaimer: A file will be generated if at least one data point is available for the selected time range.