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Pioneer 10 Helium Vector Magnetometer (MAG), Magnetic Field in RTN Coordinates and One Way Light Time Delays, Cruise Phase

This Data Set from the Pioneer 10 Helium Vector Magnetometer, HVM, consists of 1 min Averages of Vector Components and Scalar Magnitudes of the Interplanetary Magnetic Field. The three Components, Br, Bt, Bn, are given in Radial-Tangential-Normal, RTN, Coordinates and all Magnetic Fields are expressed in nT. The Scalar Magnitudes, B, are Averages of higher-resolution Scalar Magnitudes. The Time Tag for each 1 min Interval is the Midpoint of the averaging Interval in Spacecraft Event Time-UT, SCET-UT. The Averages were originally calculated over 1 min Intervals in Ground Received Time, and the Midpoints have been converted to SCET-UT. The File P10_LIGHTTIME contains Daily Values for the one way Light Time Delay. No records are written for Data Gaps. Most Files cover from 28 up to 35 Days, but there are a Number of shorter Files, particularly at Year Boundaries. Data for the Jupiter Encounter, Days 329 through 349 of 1973, are not included. The RTN System is fixed to the Sun-Spacecraft Line and aligned with the Solar Heliographic Equator. The R Axis is the Radial Direction to the Spacecraft, the T Axis is the Cross Product of the Solar Rotation Axis and the R Axis, and N is the Cross Product of the R and T Axes. The File P10HVM_15M.SFD provides a detailed Description of the Pioneer Spacecraft, the HVM Experiment, and the Data. This ASCII Document is written in Standard Formatted Data Unit, SFDU, Format as Part of NSSDC Data Set 72-012A-01I for 15 min. Averaged Data covering 1972-03-03 to 1975-11-17. Data Set Files: P10HVMMN_FMT.txt, this Document, ASCII; P10HVM_15M.SFD, SFDU Metadata Extract from Pioneer 10 HVM 15 min Data Set; Myyddd.asc, 1 min Data Files from Pioneer 10 HVM starting at Date yyddd; and P10_LIGHTTIME.asc, Data File with One Way Light Time Delays, ASCII. Related Information and Data: Further Details on the Spacecraft, Experiment, Data Sets at NSSDC, and related WWW Sites can be found on the Pioneer 10/Pioneer 11 Flight Project Page under https://nssdc.gsfc.nasa.gov/space/. Pioneer 10 and Pioneer 11 Hourly of the Interplanetary Solar Wind Data Averages and Heliocentric Coordinates and other Interplanetary Spacecraft may be also be accessed and plotted Online through the COHOWeb Service, https://cohoweb.gsfc.nasa.gov/coho/. Pioneer Data on the NASA Data Archive and Distribution Service, NDADS, may be located on the WWW via the SPyCAT Service at the first URL listed above or by an E-Mail Message to the Automated Retrieval Mail System, ARMS, at archives@ndadsa.gsfc.nasa.gov with $apos;HOLDINGS$apos; on the Subject Line. Data Set Coverage, yyyy-mm-dd: 1972-03-03 to 1975-11-17, Data Set Contact: Joyce Wolf, NASA JPL.

ISEE 3 Vector Helium Magnetometer (MAG), Magnetic Field, 1 min CDF Data

This Data Set contains averaged 1 min magnetic field data converted from simple ASCII records. It was created at the NSSDC from a more complex, multi-resolution data set with the current NSSDC ID of SPHE-00673 and old NSSDC ID of 78-079A-02D, provided by the Principal Investigator Team and now available from ftps://spdf.gsfc.nasa.gov/pub/data/isee/isee3/magnetic_fields/1min_ascii_extracted/. The Coordinate System for the magnetic field components is the JPL-defined I,S Coordinate System set at the origin at the spacecraft: I is the unit vector in the direction of the ISEE 3 spin axis, positive in the northward direction, and S is the unit vector from the spacecraft to the sun. The Z-Axis is parallel to I, the Y-Axis is parallel to the cross product I ⨯ S, and the X-Axis is parallel to Y ⨯ Z. The I,S coordinate system is approximately the same as the Solar Ecliptic, SE, System since the Spacecraft Z-Axis, the Spin Axis, is maintained within 0.5° of perpendicular to the Ecliptic Plane. The SE coordinate system is defined in the same way as GSE, but with the spacecraft point of observation substituted for the position of the earth. For years 1984 through 1990 the spacecraft position in HGI coordinates was added to the data product. The HGI coordinate system is sun-centered and inertially fixed with respect to an X-Axis directed along the intersection line of the Ecliptic and Solar Equatorial planes, which defines the 0° longitude direction. The Solar Equatorial plane is inclined at 7.25° from the Ecliptic. This direction was towards an Ecliptic longitude equal to 74.367° on January 1, 1900 at 12:00 UT, but because of the precession of the earth's equator, this longitude increases by 1.4° per century. The Z-Axis is directed perpendicular to and northward of the solar equator and the Y-Axis completes the right-handed Set. The HGI longitude increase from 0° in the X-Direction towards the positive Y-Direction. The HGI latitude increases to +90° at the north pole and decreases to -90° at the south pole. Note that the values listed are 1 min averages, so that B ^2 may not equal B^2 .

Fort Nelson (FTN) Ground-based Vector Magnetic Field (L2) 1.0 s Data

Fort Nelson, BC, Ground-based Vector Magnetic Field Level 2 Data, 1.0 s Time Resolution, Station Code: (FTN), Station Location: (GEO Latitude 58.9, Longitude 237.2), STEP Polar Network

Upernavik (UPN) Ground-based Vector Magnetic Field (L2) 1.0 min Data

Upernavik, Greenland, Ground-based Vector Magnetic Field Level 2 Data, 1.0 min Time Resolution, Station Code: (UPN), Station Location: (GEO Latitude 72.8, Longitude 303.8), DTU Network

STEREO-B In-Situ Measurements of Particles and CME Transients (IMPACT) Fluxgate Magnetometer (MAG) Magnetic Field Vectors, in Spacecraft (SC) Coordinates

STEREO Behind In-situ Measurements of Particles and CME Transients, IMPACT, Magnetometer Instrument, MAG, Magnetic Field Vectors, Level 1 Data

Hopen (HOP) Ground-based Vector Magnetic Field (L2) 1.0 min Data

Hopen, Norway, Ground-based Vector Magnetic Field Level 2 Data, 1.0 min Time Resolution, Station Code: (HOP), Station Location: (GEO Latitude 76.5, Longitude 25.0), TGO Network

Kilpisjarvi (KIL) Ground-based Vector Magnetic Field (L2) 10.0 s Data

Kilpisjarvi, Finland, Ground-based Vector Magnetic Field Level 2 Data, 10.0 s Time Resolution, Station Code: (KIL), Station Location: (GEO Latitude 69.1, Longitude 20.8), IMAGE Network

Ivalo (IVA) Ground-based Vector Magnetic Field (L2) 10.0 s Data

Ivalo, Finland, Ground-based Vector Magnetic Field Level 2 Data, 10.0 s Time Resolution, Station Code: (IVA), Station Location: (GEO Latitude 68.5, Longitude 27.3), IMAGE Network

Rorvik (RVK) Ground-based Vector Magnetic Field (L2) 1.0 min Data

Rorvik, Norway, Ground-based Vector Magnetic Field Level 2 Data, 1.0 min Time Resolution, Station Code: (RVK), Station Location: (GEO Latitude 64.9, Longitude 11.0), TGO Network

PENGUIn-3 (PG3) Ground-based Vector Magnetic Field (L2) 1.0 s Data

PENGUIn-3, Antarctica, Ground-based Vector Magnetic Field Level 2 Data, 1.0 s Time Resolution, Station Code: (PG3), Station Location: (GEO Latitude -84.8, Longitude 37.6), Antarctic Network

Bjornoya (BJN) Ground-based Vector Magnetic Field (L2) 1.0 min Data

Bjornoya, Norway, Ground-based Vector Magnetic Field Level 2 Data, 1.0 min Time Resolution, Station Code: (BJN), Station Location: (GEO Latitude 74.5, Longitude 19.0), TGO Network

Bettles (BETT) Ground-based Vector Magnetic Field (L2) 1.0 s Data

Bettles, AK, Ground-based Vector Magnetic Field Level 2 Data, 1.0 s Time Resolution, Station Code: (BETT), Station Location: (GEO Latitude 66.9, Longitude 208.5), University of Alaska Network

Paamiut (FHB) Ground-based Vector Magnetic Field (L2) 1.0 min Data

Paamiut (Frederikshap), Greenland, Ground-based Vector Magnetic Field Level 2 Data, 1.0 min Time Resolution, Station Code: (FHB), Station Location: (GEO Latitude 62.0, Longitude 310.3), DTU Network

Attu (ATU) Ground-based Vector Magnetic Field (L2) 20.0 s Data

Attu, Greenland, Ground-based Vector Magnetic Field Level 2 Data, 20.0 s Time Resolution, Station Code: (ATU), Station Location: (GEO Latitude 67.9, Longitude 306.4), DTU Network

Ranua (RAN) Ground-based Vector Magnetic Field (L2) 10.0 s Data

Ranua, Finland, Ground-based Vector Magnetic Field Level 2 Data, 10.0 s Time Resolution, Station Code: (RAN), Station Location: (GEO Latitude 65.9, Longitude 26.4), IMAGE Network

Eagle (EAGL) Ground-based Vector Magnetic Field (L2) 0.5 s Data

Eagle, AK, Ground-based Vector Magnetic Field Level 2 Data, 0.5 s Time Resolution, Station Code: (EAGL), Station Location: (GEO Latitude 64.8, Longitude 218.8), University of Alaska Network

Pangnirtung (PANG/PGG) Ground-based Vector Magnetic Field (L2) 0.5 s Data

Pangnirtung, NU, Ground-based Vector Magnetic Field Level 2 Data, 0.5 s Time Resolution, Station Code: (PANG/PGG), Station Location: (GEO Latitude 66.1, Longitude 294.2), MACCS Network

College (CMO) Ground-based Vector Magnetic Field (L2) 1.0 s Data

College (Fairbanks), AK, Ground-based Vector Magnetic Field Level 2 Data, 1.0 s Time Resolution, Station Code: (CMO), Station Location: (GEO Latitude 64.9, Longitude 212.1), USGS Network

Hov Faroe Islands (HOV) Ground-based Vector Magnetic Field (L2) 1.0 min Data

Hov Faroe Islands, Denmark, Ground-based Vector Magnetic Field Level 2 Data, 1.0 min Time Resolution, Station Code: (HOV), Station Location: (GEO Latitude 61.2, Longitude 314.6), Norwegian Mag. Network

Dededo (GUA) Ground-based Vector Magnetic Field (L2) 1.0 s Data

Dededo, GU, Ground-based Vector Magnetic Field Level 2 Data, 1.0 s Time Resolution, Station Code: (GUA), Station Location: (GEO Latitude 13.6, Longitude 144.9), USGS Network