AndreaBozzo/ceres-open-data-index huggingface dataset:
Voyager 1 Ephemeris, Heliocentric Trajectories, Heliographic, Heliographic Inertial, and Solar Ecliptic Coordinates, HelioWeb, Daily Data

Heliocentric trajectories for Voyager 1 in Heliographic, HG, Heliographic Inertial, HGI, and Solar Ecliptic, SE, Coordinates The original trajectory data are taken from http://ssd.jpl.nasa.gov/horizons.cgi where users can find many more objects. In the case of orbit data for planets, the orbit data can be used as a proxy for spacecraft ephemeris that are in orbit about the planets. On a heliospheric scale, differences between the planet orbital tarjectory and that of the spacecraft are very small. For instance, the heliocentric longitudes differ by only 0.25° for a spacecraft stationed near the L1 Lagrange point at approximately 100 Earth radii upstream of the Earth. The production of the HG, HGI, and SE trajectory data requires a values for the "Equinox Epoch", which is defined as the epoch time when the direction from the Earth to the sun at the time of the vernal equinox when the sun seems to cross equatorial plane of the Earth from below. This direction is called the First Point of Aries, FPA and it is not a fixed direction but drifts by about 1.4° per century or 50.26" per year. In addition, there are tiny irregularities in FPA drift that are on the order of 1" per year or less. The Equinox Epoch can be determined by using a variety of methods for calculating the instantaneous FPA longitudinal direction and whether the tiny irregularities have been smoothed or averaged out. Four methods for determining the Equinox Epoch are in common usage: +---------------------------------------------------------------------+   Method Name   FPA Longitude Definition    ---------------------------------------------------------------------    B1950.0   the actual FPA at 22:09 UT on December 31, 1949     J2000.0   the smoothed FPA at 12:00 UT on January 1, 2000     True of Date   the actual FPA at 00:00 UT on the date of interest     Mean of Date   the smoothed FPA at 00:00 UT on the date of interest   +---------------------------------------------------------------------+ The heliocentric trajectory data included in this data product have been calculated by using the Equinox Epoch: defined via the "Mean of Date" method. More precise coordinates, and some planet-centered coordinates, are found in the "traj" subdirectories of spacecraft specific directories at https://spdf.gsfc.nasa.gov/pub/data/ and http://ssd.jpl.nasa.gov/horizons.cgi.

Tags: ephemeris
Organization: National Aeronautics and Space Administration
Ulysses Solar Wind Observations Over the Poles of the Sun (SWOOPS) Alpha Particle Distribution Function Fitting Parameters, Key Parameter (K0), 4 min Data

This File contains the Parameters obtained by fitting Data to a Bi-Maxwellian Core-Beam Distribution. Under normal Circumstances, the first (slow) Population is the Core and the second (fast) Population is the Beam. When the Interplanetary Magnetic Field is folded back on itself due to Turbulence or other Processes the relation of the first and second Populations to the Core and Beam, respectively, is reversed (see, e.g., M.M. Neugebauer and B.E. Goldstein, AIP Conf. Proc. 1539, 46, 2013). The Vector Magnetic Field is given in RTN Coordinates and it was obtained for the Time at which the Peak of the Alpha Particle Distribution Function was measured. Only good Fits are retained.

Tags: magneticfield, thermalplasma
Organization: National Aeronautics and Space Administration
MARS EXPRESS MARS MRS 1/2/3 EXTENDED MISSION 3 3349 V1.0

This is a Mars Express Radio Science data set, collected during the extended mission phase 2010-01-01 to 2012-12-31. It is a Global Gravity measurement and covers the time 2012-09-17T06:49:48.000 to 2012-09-17T09:08:01.500.

Tags: __
Organization: National Aeronautics and Space Administration
MMS 4 Fast Plasma Investigation, Dual Electron Spectrometer (FPI, DES) Distribution Moments, Level 2 (L2), Fast Mode, 4.5 s Data

The Fast Plasma Instrument (FPI) usually Operates in Fast Survey (FS) Mode in the MMS Region Of Interest (ROI) for the current Mission Phase. Data are taken at Burst (30/150 ms for DES/DIS) Resolution are aggregated onboard and made available at Survey (4.5 s) Resolution in this Mode. Planning around Calibration Activities, avoidance of Earth Radiation Belts, etc., when possible, FPI usually Operates in Slow Survey (SS) Mode outside of ROI, and then only the 60 s Resolution Survey Data are available. This Product contains Results from integrating the standard Moments of Phase Space Distributions formed from the indicated Data Type (DES/DIS Burst, FS or SS). For Convenience, some additional Parameters are included to augment those most commonly found in a Moments Product of this sort, plus Time Stamps and other Annotation characterizing the State of the Instrument System at the indicated Time.

Tags: energeticparticles, spectrum, thermalplasma
Organization: National Aeronautics and Space Administration
ROSETTA-ORBITER 67P RSI 1/2/3 COMET ESCORT 4 1229 V1.0

This is a Rosetta Radio Science data set, collected during the COMET ESCORT 4 phase 2015-10-22 to 2015-12-31. It is a Global Gravity measurement at the comet 67P and covers the time 2015-12-02T12:29:05.000 to 2015-12-02T16:22:11.500.

Tags: __
Organization: National Aeronautics and Space Administration
Voyager 1 LECP - Daily Average Interplanetary Data

This data file contains 1 day averages of count rates for eleven differential energy proton/ion channels (30 keV - 20 MeV) and one integral channel  (>70 MeV protons) from the Low Energy Charged Particle (LECP) instrument on Voyager 1.   The interplanetary data listed are averaged over 24 hours, with the start time of the averging interval begining at the start of the day listed.  For example, 77/300 is an average over hours 0-23 on day 300 of 1977. Times are given in SCET-UT. The count rates R are in counts per second.  The statistical uncertainty for each channel is the inverse square root of the total number of counts during each 24 hour period times the average count rate R. Included in the data table are the passbands in KeV for protons, the logarithmic mean energy Em for the differential energy channels, the geometric factor "g" (cm**2-steradian), and the flux conversion factor "f".  To get from count rate R to differential in energy flux "dj(E)/dE", multiply R by f, \n i.e., \n    dj(E)/dE=f*R. \n\n    Note that f is simply the inverse of the energy passband multiplied by\n the geometric factor. Generally one uses a more elaborate algorithm to \n calculate fluxes by determining the local slope of the energy spectrum within \n each energy passband, usually by an iterative algorithm, and then evaluating \n the flux corresponding to each channel using this slope.  However, if the \n slope of the energy spectrum is not to steep, the approximation dj(E)/dE=f*R \n is very good if the flux is evaluated at the mean energy Em=Sqrt(EL*EH),\n where EL and EH are the low and high energy ends of the passband.  Since the \n slopes of low energy ion spectra in the interplanetary medium are in the\n range of -1 to -3, the approximation is very good.

Tags: energeticparticles
Organization: National Aeronautics and Space Administration
ROSETTA-ORBITER SW RPCMAG 3 PRL CALIBRATED V9.0

This dataset contains CALIBRATED (CODMAC LEVEL 3) DATA of thePRELANDING Phase (PRL) from March 23,2014 until November 21, 2014of the ROSETTA orbiter magnetometer RPCMAG. Observations are done inthe vicinity of comet 67P/CHURYUMOV-GERASIMENKO 1 (1969 R1).The current version of the dataset is V9.0.The difference to the datasets of earlier versions is mainly a significantlyimproved sensor temperature model, more detailed documentation about magneticdisturbance sources, more data handling information for the user andalso an improved quality flagging system.

Tags: __
Organization: National Aeronautics and Space Administration
MARS EXPRESS MARS MRS 1/2/3 EXTENDED MISSION 3 3429 V1.0

This is a Mars Express Radio Science data set, collected during the extended mission phase 2010-01-01 to 2012-12-31. It is a Global Gravity measurement and covers the time 2012-12-14T04:20:36.000 to 2012-12-14T08:03:09.500.

Tags: __
Organization: National Aeronautics and Space Administration
MARS EXPRESS MARS MRS 1/2/3 EXTENDED MISSION 8 4253 V1.0

This is a Mars Express Radio Science data set, collected during the extended mission phase 2021-01-01 to 2022-12-31. It is a Occultation measurement and covers the time 2022-05-12T06:57:57.000 to 2022-05-12T07:30:05.000.

Tags: __
Organization: National Aeronautics and Space Administration
MMS 4 Magnetic Ephemeris and Coordinates (MEC) and Support (Tsyganenko 1989 model, Quiet conditions), Level 2 (L2), Survey Mode, 30 s Data

Magnetospheric Multiscale 4 (MMS 4) spacecraft position, velocity, attitude, angular momentum vector, and magnetic ephemeris and coordinates (MEC), Level-2 science data at Quick-Look (30 s) time resolution. The Magnetic ephemeris data are calculated by using the Tsyganenko 1989 magnetic field model for quiet magnetospheric conditions. Many variables are included in this data product including the magnetic field measured at the spacecraft. If possible, the northern and southern hemisphere footpoints of the spacecraft are found by tracing along the magnetic field line threading through the spacecraft per the given Tsyganenko and internal magnetic field models. The northern and southern hemisphere loss cone angles are also given. The magnetic field strength at the footpoints and the minimum magnetic field strength along the field line are also calculated by using the field models. Other variables list the spacecraft L-shell, the magnetic local time, the magnetic latitude and longitude, and whether the threading field line is open, closed, etc. Rotational quaternions are provided to allow coordinate transformation from GEI into 6 other coordinate systems including BSC, GEO, GSE, GSE2000, GSE, and SM. The list of ancillary variables includes the dipole tilt angle, the Dst and Kp actvity indices, and separate flags that denote satellite eclipse by the Earth and Moon.

Tags: activityindex, ephemeris, magneticfield
Organization: National Aeronautics and Space Administration
DAWN GRAND MAP VESTA NEUTRON  ABSORPTION V1.0

A global map of a unitless  compositional parameter, delta-C_perpendicular (DCP), and propagated  1-sigma uncertainties is provided. DCP varies linearly with the  macroscopic thermal neutron absorption cross section of Vesta's  regolith. An equation for converting tabulated DCP values to  absorption units is provided in this document. DCP was determined from  thermal and epithermal neutron counting rates measured by the NASA  Dawn mission's Gamma Ray and Neutron Detector (GRaND) while in low  altitude mapping orbit, about 210 km from Vesta's surface. The  measurements are representative of Vesta's bulk regolith composition  to depths of a few decimeters with a spatial resolution of about  300-km full-width-at-half-maximum of arc length on the surface. The  methods used to determine neutron absorption are described by  PRETTYMANETAL2013.

Tags: __
Organization: National Aeronautics and Space Administration
ATom: Flight Dynamics and Environmental Parameters of the NASA DC-8 Aircraft

This dataset contains flight dynamics and environmental parameters (often referred to as housekeeping) specific to the DC-8 aircraft as collected from an assortment of instruments across all four ATom campaigns flown from 2016 through 2018. Measurements include aircraft position, altitude, speed, wind parameters, air temperature, and atmospheric and cabin pressure. These data can be used to understand the interior and exterior conditions and positioning of the DC-8 aircraft at 1-second resolution.

Tags: earth-science-altitude-atmosphere, earth-science-atmospheric-temperature-atmosphere, earth-science-atmospheric-water-vapor-atmosphere-water-vapor-indicators-vapor-pressure, earth-science-atmospheric-winds-atmosphere-upper-level-winds-wind-direction, earth-science-atmospheric-winds-atmosphere-upper-level-winds-wind-speed, earth-science-platform-characteristics-spectral-engineering-flight-data-logs
Organization: National Aeronautics and Space Administration
Voyager 1 Hourly Magnetic Field Data from 1977-1989

This data set contains hour averages of the interplanetary magnetic field (IMF) measurements obtained by the triaxial fluxgate magnetometer (MAG) experiment on Voyager 1. Identical instruments on Voyager 1 and 2 were designed to measure the IMF between Earth and Saturn (10 AU) during the primary Voyager mission. The design and performance yielded absolute accuracies to better than 0.1 nT. In general, each component of the IMF hourly average has an uncertainty of up to (+/- 0.05 nT) in the region beyond 10 AU. More accurate measurements can be obtained by special processing of the data, but it was not feasible to do this for the entire data set included here. The magnetic field magnitude in nT is provided along with angles of the field vector in the spacecraft-centered Heliographic (HG) coordinate system, also known as RTN. The X-HG axis is directed from the Sun to the spacecraft, Y-HG is the cross product of the solar rotation axis and X-HG, and Z-HG completes the orthogonal axis system. The accompanying format description file defines the transformation of the HG angles to vector components. Cartesian coordinates are given for the spacecraft in the sun-centered Inertial Heliographic (IHG) system, where the Z-IHG axis is parallel to the solar rotation axis, X-IHG points towards the ascending node direction of the solar equator's intersection with the Ecliptic, and Y-IHG is parallel to the solar equator and completes the orthogonal system. The MAG instruments are described by K. W. Behannon et al., Space Science Reviews, 21, 235, 1977. The data and coordinates are described by L. F. Burlaga, Space Science Reviews, 39, 255, 1984. These data are from 1977-1989 and include spacecraft position data whereas the 1990-2004 data do not. The seperation into two data products resulted from the fact that mean fields were falling towards the instrumentation digitization resolution. The Voyager/MAG team temporarily stopped production while they addressed the issue. Subsequent production in 1990 resulted in a similar data set, but without the spacecraft position. This data set is also related to the 1-hour merged Voyager mag and plasma data set. These associations are listed below using the SPASE AssociationID notation.

Tags: magneticfield
Organization: National Aeronautics and Space Administration
ROSETTA-ORBITER 67P RSI 1/2/3 COMET ESCORT 2 0814 V1.0

This is a Rosetta Radio Science data set, collected during the COMET ESCORT 2 phase 2015-03-11 to 2015-06-30. It is a Global Gravity measurement at the comet 67P and covers the time 2015-05-28T16:13:20.000 to 2015-05-28T18:51:05.000.

Tags: __
Organization: National Aeronautics and Space Administration
ULY JUP ENCOUNTER SWOOPS PLASMA HIRES                                        DATA

The SWOOPS (Solar Wind Observations                                      Over the Poles of the Sun) experiment                                      has two electrostatic analyzers, one                                      for positive ions and one for                                      electrons. The electron and ion                                      analyzers are separate instruments                                      that operate asynchronously.

Tags: __
Organization: National Aeronautics and Space Administration
Voyager 1 Hourly Magnetic Field Data from 1990-2004

This data set contains hour averages of the interplanetary magnetic field (IMF) measurements obtained by the triaxial fluxgate magnetometer (MAG) experiment on Voyager 1. Identical instruments on Voyager 1 and 2 were designed to measure the IMF between Earth and Saturn (10 AU) during the primary Voyager mission. The design and performance yielded absolute accuracies to better than 0.1 nT. In general, each component of the IMF hourly average has an uncertainty of up to (+/- 0.05 nT) in the region beyond 10 AU. More accurate measurements can be obtained by special processing of the data, but it was not feasible to do this for the entire data set included here. The magnetic field magnitude in nT is provided along with angles of the field vector in the spacecraft-centered Heliographic (HG) coordinate system, also known as RTN. The X-HG axis is directed from the Sun to the spacecraft, Y-HG is the cross product of the solar rotation axis and X-HG, and Z-HG completes the orthogonal axis system. The accompanying format description file defines the transformation of the HG angles to vector components. Cartesian coordinates are given for the spacecraft in the sun-centered Inertial Heliographic (IHG) system, where the Z-IHG axis is parallel to the solar rotation axis, X-IHG points towards the ascending node direction of the solar equator's intersection with the Ecliptic, and Y-IHG is parallel to the solar equator and completes the orthogonal system. The MAG instruments are described by K. W. Behannon et al., Space Science Reviews, 21, 235, 1977. The data and coordinates are described by L. F. Burlaga, Space Science Reviews, 39, 255, 1984. These data are from 1990-2004 and do not include spacecraft position data whereas the 1977-1989 data do. The seperation into two data products resulted from the fact that mean fields were falling towards the instrumentation digitization resolution. The Voyager/MAG team temporarily stopped production while they addressed the issue. Subsequent production in 1990 resulted in a similar data set, but without the spacecraft position. This data set is also related to the 1-hour merged Voyager mag and plasma data set. These associations are listed below using the SPASE AssociationID notation.

Tags: magneticfield
Organization: National Aeronautics and Space Administration
ROSETTA-ORBITER 67P SREM 5 PRELANDING MTP009 V1.0

This data set contains derived electron and proton flux energies in MeV from the Standard Radiation Environment Monitor (SREM) instrument on the Rosetta spacecraft, which had the primary target of comet 67P/Churyumov-Gerasimenko. These are CODMAC Level 5 derived data, and measure the radiation in the spacecraft environment during the Medium Term Plan 9 period of the PRELANDING mission phase.

Tags: __
Organization: National Aeronautics and Space Administration
ROSETTA-ORBITER 67P RSI 1/2/3 COMET ESCORT 4 1225 V1.0

This is a Rosetta Radio Science data set, collected during the COMET ESCORT 4 phase 2015-10-22 to 2015-12-31. It is a Global Gravity measurement at the comet 67P and covers the time 2015-11-30T19:47:00.000 to 2015-12-01T04:10:52.000.

Tags: __
Organization: National Aeronautics and Space Administration
ATom: Development of Cloud Indicator Algorithm Using Airborne Observations from CAPS

This dataset is the basis for the development of the Cloud Indicator, a novel algorithm that automatically detects and classifies measurement periods inside clouds. The included data were used in the analysis and development of figures for the related publication. The Cloud Indicator algorithm was developed based on particle size distribution measurements from a second-generation Cloud, Aerosol, and Precipitation Spectrometer (CAPS) combined with measurements of relative humidity and temperature from other sensors, to automatically detect flight sequences in clouds and classify the cloud type. Measurements were collected on 2016-08-20 as part of the Atmospheric Tomography Mission (ATom-1) Campaign and on 2017-04-20 as part of the Absorbing aerosol layers in a changing climate: aging, LIFEtime and dynamics (A-LIFE) project. As an additional criterion for the Cloud Indicator, a cloud-aerosol volume factor was established to ensure a precise and robust distinction between clouds and aerosol layers such as mineral dust or biomass burning to reduce misclassifications. Data are provided in netCDF (*.nc) format.

Tags: earth-science-atmospheric-ocean-indicators-climate-indicators-cloud-indicators
Organization: National Aeronautics and Space Administration
MMS 4 Fast Plasma Investigation, Dual Ion Spectrometer (FPI, DIS) Instrument Distributions, Level 2 (L2), Fast Mode, 4.5 s Data

The Fast Plasma Instrument (FPI) usually Operates in Fast Survey (FS) Mode in the MMS Region Of Interest (ROI) for the current Mission Phase. Data are taken at Burst (30/150 ms for DES/DIS) Resolution are aggregated onboard and made available at Survey (4.5 s) Resolution in this Mode. This Product contains Phase Space Distribution Maps of Results from surveying the High Resolution Observations during each 4.5 s Period. In particular, the (highest possible Quality at the Time of Release) corrected/converted "Fast Survey Sky Map" Distributions are reported with Time Stamps and other Annotation characterizing the State of the Instrument System at the indicated Time.

Tags: energeticparticles
Organization: National Aeronautics and Space Administration
MARS EXPRESS MARS MRS 1/2/3 EXTENDED MISSION 8 4183 V1.0

This is a Mars Express Radio Science data set, collected during the extended mission phase 2021-01-01 to 2022-12-31. It is a Occultation measurement and covers the time 2021-01-29T12:12:35.299 to 2021-01-29T12:34:43.849.

Tags: __
Organization: National Aeronautics and Space Administration
ROSETTA-ORBITER 67P RPCMIP 3 ESC4 V2.0

This archive contains data from the RPC-MIP instrument onboard ROSETTA Orbiter acquired during the COMET ESCORT 4 mission phase. The primary target was comet 67P/C-G. It also contains documentation which describes the RPC-MIP experiment. The data archived in this data set conform to the Planetary Data System Standards, Version 3.6. This is V2.0 updated after Science Review.

Tags: __
Organization: National Aeronautics and Space Administration
ATom: In Situ Atmospheric Water Vapor from the Diode Laser Hygrometer, Version 2

This dataset provides the concentrations of water measured by the Diode Laser Hygrometer (DLH) flown on the NASA DC-8 during the ATom 1-4 campaigns from 2016 - 2018. The DLH measures the water vapor in the atmosphere by wavelength modulated differential absorption spectroscopy of an isolated rovibrational line. The measurements include water vapor mixing ratio in parts-per-million-by-volume (ppmv) and relative humidity in percent. Relative humidity, both with respect to liquid water and with respect to ice, are quantities derived from measurements of water vapor mixing ratio as well as ambient temperature and pressure.

Tags: earth-science-air-quality-atmosphere, earth-science-atmospheric-water-vapor-atmosphere-water-vapor-indicators-humidity, earth-science-atmospheric-water-vapor-atmosphere-water-vapor-indicators-water-vapor
Organization: National Aeronautics and Space Administration
Ulysses URAP RAR Peak 10-min Electric Field Data

This set of RAR (Radio Astronomy Receiver) data from the Ulysses URAP (Unified Radio and Plasma Waves) experiment contains averages of the peak electric field intensities in 10-minute intervals via CDAWeb. The frequency spectra are determined from measurements on the X antenna of the URAP instrument in units of microvolt/Hz^0.5 for the frequency channel from 1.25 - 940.0 kHz.

Tags: waves-passive
Organization: National Aeronautics and Space Administration