File: AAREADME.TXT Version: NSSDC 11/15/2001 JFC ------------------------------------------------------------------------- Interplanetary Heliocentric Coordinates for the Helios 2 Spacecraft Data Contact: Prof. John W. Freeman Department of Space Physics Rice University PO Box 1892 Houston, TX 77251 Internet: FREEMAN@ALFVEN.RICE.EDU DECnet: RICE::FREEMAN Description: This directory includes hourly heliocentric coordinate data in subdirectory HOUR for the Helios 2 spacecraft as extracted from the merged solar wind magnetic and plasma data set in HELIOS_2/MGD_FREEMAN. Related Information and Data: Further details on the spacecraft, experiment, data sets at NSSDC, and related WWW sites can be found on the Helios 1/2 flight project page: http://nssdc.gsfc.nasa.gov/space/ Hour averages of the interplanetary solar wind data from, and hourly heliocentric coordinates of, Helios 1/2 and other interplanetary spacecraft may be also be accessed and plotted on-line through the COHOWeb service based at the same WWW site as above. Acknowledgement: Use of these data in publications should be accompanied at minimum by acknowledgements of the National Space Science Data Center and the responsible Principal Investigator defined in the experiment documentation provided here.