BULLETIN !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Archival Tracking Data Files (ATDF) from the Pioneer 10 and 11 Celestial Mechanics experiments have been added in directory radio/atdf. The documents subdirectory includes user notes from C. Markwardt of GSFC on processing of the data files with IDL software. Binary ATDF files are included in the atdf_data subdirectory. 05/19/2003 JFC BULLETIN !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! In response to a user request we have added a high resolution tiff image of the Pioneer Plaque to the spacecraft-level directories for Pioneer 10 and 11. This image was scanned from Figure Ep-2 on page 249 of the following NASA book: Fimmel, R. O., J. A. Van Allen, and E. Burgess, Pioneer First to Jupiter, Saturn, and Beyond, NASA SP-446, NASA, Washington, D.C., 1980. 11/05/2002 JFC BULLETIN !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! High resolution and hourly averages of interplanetary solar wind data from the Pioneer 10 Plasma Analyzer experiment, and supplementary spacecraft ephemeris data, are now available in ASCII format in directory pioneer10/plasma/version31. These data have been converted from the VMS binary format of the Version 3.1 data set originally submitted to NSSDC. 1/24/2001 JFC BULLETIN !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! This Pioneer 10 update file has been extracted from the old aaupdate.doc file at the VMS anonymous FTP site for all COHO-related datasets. Directory names for current Pioneer 10/11 data sets have been changed for new locations at this new site. Note that all directory and file names at this site are actually in lower case, even though they are given below in upper case. 2/24/99 JFC BULLETIN !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Spin-averaged daily counts from the UV Photometer experiments on Pioneer 10 and Pioneer 11 have been updated through 1996 and 1993 respectively. These data are located at directories PIONEER10/UV/DAY and PIONEER11/UV/DAY respectively. 4/22/97 JFC BULLETIN !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Today marks the 25th anniversary of the launching of Pioneer 10, NASA's oldest active heliospheric mission, on March 3, 1972. A few of the older Pioneer spacecraft (e.g., Pioneer 6) at 1 A.U. are still operational but rarely tracked. A celebration will be held tonight at the Smithsonian National Air and Space Museum. Operational support for the Pioneer Project at NASA Ames Research Center is planned to end as of March 31, 1997. 3/3/97 JFC BULLETIN !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Version 3.1 of the Pioneer 10 Plasma Analyzer Data Archive at NSSDC has is a completely reprocessed revision of the previous Version 2.3 data seta and is now available in subdirectory PIONEER10/PLASMA/VERSION31 in binary format through 1994. FORTRAN source codes to produce ASCII listings of selected parameters are also provided. The document files (*.SFD) are given in Standard Formatted Data Unit (SFDU) format and include the data set overview (VOLDESC_PIOPLA.SFD), the formats of the four separate data types (FORMATSM.SFD, FORMATHR.SFD, FORMATAT.SFD, and FORMATTR.SFD), the FORTRAN files (PIOPLASM.SFD, PIOPLAHR.SFD, PIOPLAAT.SFD, and PIOPLATR.SFD), and the four data files (*.DAT). 06/24/96 JFC BULLETIN !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! In honor of the ongoing Galileo orbiter mission at Jupiter, and the planned Cassini Orbiter mission at Saturn, the final spacecraft ephemeris data sets in the NSSDC archive for the Pioneer 10 encounters of Jupiter and Saturn, and the Pioneer 11 encounter of Saturn, have been moved to the following locations: PIONEER10/TRAJ/JUPITER, PIONEER11/TRAJ/JUPITER, and PIONEER11/TRAJ/SATURN. Time resolutions vary from daily in the far encounter phases to about one minute near closest approach. BULLETIN !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Selected Pioneer 10 and 11 magnetic field data previously archived in ASCII format from the Jupiter and Saturn encounters have been placed into PIONEER10/MAG/JUPITER, PIONEER11/MAG/JUPITER, and PIONEER11/MAG/SATURN, respectively. 03/18/96 JFC BULLETIN !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! The Pioneer 10 & 11 6-hour averaged cosmic ray data from the Cosmic Ray Telescope (CRT) experiments (P.I.: F. B. McDonald, U. of Maryland) have been updated through Dec. 1994 beyond the previous end date of Dec. 1991. These ascii data may be found, along with SFDU document and format files, in subdirectories PIONEER10/PARTICLE/CRT and PIONEER11/... . 03/01/96 JFC BULLETIN !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ASCII versions of the latest Pioneer 10 & 11 plasma data from the Pioneer Plasma Group Web site at NASA Ames have been retrieved for archiving into the COHO directories [coho.p10pla.hour_ascii] and [coho.p11pla.hour_ascii]. The data are in files *.ASC and information about the mission, experiment, dataset, and publications is in the *.TXT files. These ASCII files correspond to the same data set version (2.3) as previously made available (see 6/30/95 notice below) for the full binary data sets, data coverge being 1972-1994 for Pioneer 10 and 1973-1992 for Pioneer 11. Trajectory data are also included in the ASCII data sets. {The Pioneer 11 were later superceded in 1996 by Version 3.1} 12/20/95 JFC BULLETIN !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! The Pioneer 10 Trajectory Ephemeris Archive from the Pioneer Project at NASA Ames has been extended through 2000-01-01 and is now fully on-line in directory PIONEER10/TRAJ/MISSION. 10/18/95 JFC BULLETIN !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! One minute averages of Pioneer 10 Vector Helium Magnetometer (VHM) data for 1972 - 1975 (instrument failed in Nov. 1975) have been received recently from Joyce Wolf at JPL and are in directory PIONEER10/MAG/MINUTE. 7/13/95 JFC BULLETIN !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! The entire Pioneer 10 and 11 Plasma Analyzer data sets have recently been reprocessed by Paul Gazis of NASA Ames from near launch to the most recently available data. The new data cover 72-04-18 (72/109) to 94-12-05 (94/339) for Pioneer 10 and 73-04-21 (73/111) to 92-05-30 (92/151) for Pioneer 11. The full native data sets are in directories P10PLA.ARCHIVE and P11PLA.ARCHIVE. These include high resolution (4-min.) summary data, hourly averages, spacecraft attitude, and spacecraft trajectory. These data are in VAX binary format; sample FORTRAN codes are provided for binary-to-ASCII conversions. 6/30/95 JFC BULLETIN !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! New data from Walker Fillius's Pioneer 10 Trapped Radiation Detector (TRD) experiment have been received by NSSDC earlier this year and recently added to COHO. The native format data cover 1991 - 1993 at 30-min resolution in the subdirectory PIONEER10/PARTICLE/TRD/30_MIN, while hour averages of these data are in PIONEER10/PARTICLE/TRD/HOUR. {The 30_MIN data are now mostly kept off-line}. 6/15/95 JFC BULLETIN !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! The latest archival data from the Cosmic Ray Telescope (CRT) experiments Pioneer 10 and 11 have been loaded from the NSSDC off-line archive into directories P10CRT and P11CRT for years 1972-1991 and 1973-1991, respectively. 3/30/95 JFC BULLETIN !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Other recent additions to COHO and the NSSDC archive include extended Pioneer 10 ultraviolet data (PIONEER10/UV/DAY) through 1991 and a new Pioneer 10 plasma analyzer data set for launch through 1992. JFC/01-23-95 BULLETIN !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Interplanetary data from the Pioneer 10 Ultraviolet Photometer (UVP) are now available in directory PIONEER10/UV/DAY and consists of daily average count rates from the long (<1400 A) and short (<800 A) channels which respectively cover the hydrogen Lyman-alpha (1216 A) and helium (584 A) lines from backscattered sunlight. These data are used to study solar UV light backscattering from neutral hydrogen and helium in the nearby interstellar medium flowing into the heliosphere. The present data cover 1972 - 1981 and will be extended later. JFC/10-02-94 BULLETIN !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Selected hourly and daily average counting rates from the University of Chicago's Charged Particle Instrument (CPI) on Pioneer 10 for 1972-1992 may now be found in the PIONEER10/PARTICLE/CPI subdirectory. JFC/01-28-94 BULLETIN !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Although many users need heliographic spacecraft coordinates with latitudes calculated with respect to the solar equator, some may not want Carrington longitudes which are in a system fixed to the rotating Sun. Inertial longitudes are defined with respect to the ascending node of the solar equator on the Ecliptic; this node was at solar ecliptic longitude +74.367 degrees as of 1 Jan. 1900 at 1200 UT and its longitude increases by 1.4 degrees per century due to precession of the equinoxes in the solar ecliptic system. JFC/11-16-93 BULLETIN !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! The newly submitted versions of the Pioneer 10 and 11 HVM magnetic field data are now in the PIONEER10/MAG and PIONEER11/MAG. These directories now hold hourly averages with respect to Spacecraft Event Time - UT for field components in RTN coordinates and scalar magnitudes during all Pioneer 10 HVM cruise operations through 1975 (i.e., up until instrument failure) and during all Pioneer 11 HVM cruise operations through August 1992. One minute versions of these data are also available in the NSSDC tape archive. See the *_FMT.txt files for more details. JFC/09-16-93 BULLETIN !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Cosmic ray counting rates from the Pioneer 10 Charged Particle Instrument (CPI) are now available in PIONEER10/PARTICLE/CPI for 1972-1992. Other CPI data will be added later for Pioneer 11. JFC/05-19-93 BULLETIN !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Hourly average count rates for four cosmic ray channels from the Trapped Radiation Detector experiments (P.I.: W. Fillius, UCSD) on Pioneer 10 (1972- 1990) and 11 (1973-1990) are now available in directories PIONEER10/PARTICLE/TRD and PIONEER11/..., respectively. Full versions of the TRD datasets are now being processed into the NSSDC tape archive. JFC/05-04-93 BULLETIN !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! An error was found for Pioneer 10 plasma data with record dates on leap days in 1976, 1980, and 1984. The hour sequences showed breaks on these days which indicated that data after the breaks were actually for March 1st. The dates of the affected hourly records have been corrected. JFC/04-14-93 BULLETIN !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Pioneer 11 energetic particle data from the U. of Iowa GTT experiment are now available for 1973-1975 in PIONEER11/PARTICLE/GTT and will soon be extended through 1991. J. F. Cooper 12/16/92 Postnote: The GTT data are now available in PIONEER10/PARTICLE/GTT and PIONEER11/... from launch through June 1991 from both Pioneer 10 and 11, respectively. Solar wind plasma data from Pioneer Venus Orbiter for 1978-1992 are now in directory PIONEER_VENUS/PLASMA. J. F. Cooper 12/23/92 BULLETIN !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Many new datasets have been recently loaded into COHO. These include heliocentric coordinates from the [ACTIVE.HELIO]HELICOOR and PLANET programs for Galileo/Cruise & Jupiter, ICE, IMP-8/Earth, PVO/Venus, Ulysses, and Voyager 1/2. The first energetic particle data have been loaded into COHO and were taken from newly archived data (submitted by Bruce Randall) of the University of Iowa Geiger-Mueller Tube (GTT) experiment on Pioneer 10. More data are coming by early 1993 from the Pioneer 10 and 11 GTT experiments, Pioneer Venus Orbiter plasma experiment, and other cosmic ray experiments on Pioneer 10 and 11. J. F. Cooper 12/8/92A BULLETIN !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Happy twentieth anniversary to Pioneer 10 which was launched on March 3, 1972. A special commemorative celebration will take place at the National Air and Space Museum in Washington, D.C. on June 2, 1992. J. F. Cooper 03/03/92 BULLETIN !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Pioneer 10 and 11 heliocentric trajectory data are now available at one day resolution from launch through 1989 in the PIONEER10/TRAJ/IP_PROJECT and PIONEER11/... subdirectories. The parameters and accompanying documentation are described in the *_FMT.txt files. Solar ecliptic (true equinox and ecliptic of date) and heliographic coordinates are given for the spacecraft and Earth. The distances from Earth to the spacecraft are also given to facilitate conversions from ERT (Earth-Received-Time) to SCUT (spacecraft universal time). Post-1989 predict trajectories can be obtained for the Pioneers, Voyagers, and other heliocentric spacecraft by first accessing the instruction file README.FIRST in NSSDCA::ANON_DIR:[ACTIVE.HELIO] and then following directions to execute the HELICOOR program in the same directory. Solar ecliptic and system III jovicentric coordinates are now available in PIONEER10/TRAJ/JUPITER and PIONEER11/... for the Pioneer 10/11 Jupiter flyby trajectories. The 1979 Pioneer 11/Saturn flyby trajectory data are in PIONEER11/TRAJ/SATURN. J. F. Cooper 02/27/92 BULLETIN !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! The Pioneer 11 magnetometer files have been changed for complete coverage in RTN coordinates for 1973-1986. These new files also contain Pioneer 11 spacecraft position in solar ecliptic coordinates. Note that both the Pioneer 10 and Pioneer 11 magnetometer files times are in Ground Received Time. New files in Spacecraft Event Time will be provided when available. J. F. Cooper 10/25/91