juliensimon/nasa-maven-kp-insitu

NASA MAVEN Key Parameters (In-Situ)

Credit: NASA/JPL-Caltech

Part of a dataset collection on Hugging Face.

Dataset description

Data spans 2025-04-01 to 2025-08-14, split into 8 instrument configs:

Instrument	Description	Rows	Columns
LPW	Langmuir Probe and Waves -- electron density, temperature, EUV irradiance	1,222,785	22
SWEA	Solar Wind Electron Analyzer -- electron energy spectra and pitch angle distributions	1,189,677	19
SWIA	Solar Wind Ion Analyzer -- solar wind proton density, velocity, temperature	1,218,427	13
STATIC	Suprathermal and Thermal Ion Composition -- ion mass/charge composition and energy spectra	1,218,853	48
SEP	Solar Energetic Particle -- high-energy particle fluxes from solar events	1,222,683	29
MAG	Magnetometer -- magnetic field vector components (MSO and GEO frames)	1,218,855	15
NGIMS	Neutral Gas and Ion Mass Spectrometer -- neutral and ion densities in upper atmosphere	177,618	46
SPICE	Spacecraft ephemeris -- position, attitude, altitude, solar zenith angle, orbit metadata	1,222,785	50

Each config shares the same time column, enabling cross-instrument joins. Per-instrument splitting reduces download size -- load only the instruments you need.

Coordinate frames: MSO (Mars-Sun-Orbit) has X pointing Sun->Mars, Z toward north ecliptic pole, Y completing the right-hand system. GEO (areocentric geographic) has Z toward the Mars north pole, X through 0 deg longitude. APP is the Articulated Payload Platform body frame used by NGIMS, IUVS, and STATIC.

Quality flags: Each physical measurement has one or two integer quality flags. 0 = good; higher values indicate caution levels defined in the MAVEN KP SIS document. Use flag == 0 for the highest-quality science data.

Schema

LPW -- Langmuir Probe and Waves -- electron density, temperature, EUV irradiance

Column	Type	Description
time	datetime64[us]	Timestamp of measurement (UTC)
lpw_electron_density	float64	Electron number density (cm^-3), derived from probe current
lpw_electron_density_quality	float64	Quality flag for electron density (0=good)
lpw_electron_density_quality_2	float64	Secondary quality flag for electron density
lpw_electron_temperature	float64	Electron temperature (eV), derived from probe sweep
lpw_electron_temperature_quality	float64	Quality flag for electron temperature (0=good)
lpw_electron_temperature_quality_2	float64	Secondary quality flag for electron temperature
lpw_spacecraft_potential	float64	Spacecraft electrostatic potential relative to plasma (V)
lpw_spacecraft_potential_quality	float64	Quality flag for spacecraft potential (0=good)
lpw_spacecraft_potential_quality_2	float64	Secondary quality flag for spacecraft potential
lpw_e_field_power_2_100hz	float64	Electric field power spectral density in 2-100 Hz band (V^2/m^2/Hz)
lpw_e_field_2_100hz_quality	float64	Quality flag for 2-100 Hz electric field power
lpw_e_field_power_100_800hz	float64	Electric field power spectral density in 100-800 Hz band (V^2/m^2/Hz)
lpw_e_field_100_800hz_quality	float64	Quality flag for 100-800 Hz electric field power
lpw_e_field_power_0p8_1p0mhz	float64	Electric field power spectral density in 0.8-1.0 MHz band (V^2/m^2/Hz)
lpw_e_field_0p8_1p0mhz_quality	float64	Quality flag for 0.8-1.0 MHz electric field power
lpw_euv_irradiance_0p1_7nm	float64	Solar EUV irradiance in 0.1-7 nm band (W/m^2), X-ray/soft X-ray
lpw_euv_irradiance_0p1_7nm_quality	float64	Quality flag for 0.1-7 nm EUV irradiance
lpw_euv_irradiance_17_22nm	float64	Solar EUV irradiance in 17-22 nm band (W/m^2), He II continuum
lpw_euv_irradiance_17_22nm_quality	float64	Quality flag for 17-22 nm EUV irradiance
lpw_euv_irradiance_lyman_alpha	float64	Solar Lyman-alpha irradiance at 121.6 nm (W/m^2), dominant UV line
lpw_euv_irradiance_lyman_alpha_quality	float64	Quality flag for Lyman-alpha irradiance

SWEA -- Solar Wind Electron Analyzer -- electron energy spectra and pitch angle distributions

Column	Type	Description
time	datetime64[us]	Timestamp of measurement (UTC)
swea_electron_density	float64	Total electron number density (cm^-3) from SWEA energy spectra
swea_electron_density_quality	float64	Quality flag for SWEA electron density (0=good)
swea_electron_temperature	float64	Electron temperature (eV) from SWEA energy spectra
swea_electron_temperature_quality	float64	Quality flag for SWEA electron temperature (0=good)
swea_eflux_par_5_100ev	float64	Parallel electron energy flux in 5-100 eV band (eV/cm^2/s/sr/eV)
swea_eflux_par_5_100ev_quality	float64	Quality flag for 5-100 eV parallel electron flux
swea_eflux_par_100_500ev	float64	Parallel electron energy flux in 100-500 eV band
swea_eflux_par_100_500ev_quality	float64	Quality flag for 100-500 eV parallel electron flux
swea_eflux_par_500_1000ev	float64	Parallel electron energy flux in 500-1000 eV band
swea_eflux_par_500_1000ev_quality	float64	Quality flag for 500-1000 eV parallel electron flux
swea_eflux_anti_5_100ev	float64	Anti-parallel electron energy flux in 5-100 eV band
swea_eflux_anti_5_100ev_quality	float64	Quality flag for 5-100 eV anti-parallel electron flux
swea_eflux_anti_100_500ev	float64	Anti-parallel electron energy flux in 100-500 eV band
swea_eflux_anti_100_500ev_quality	float64	Quality flag for 100-500 eV anti-parallel electron flux
swea_eflux_anti_500_1000ev	float64	Anti-parallel electron energy flux in 500-1000 eV band
swea_eflux_anti_500_1000ev_quality	float64	Quality flag for 500-1000 eV anti-parallel electron flux
swea_spectrum_shape	float64	Shape parameter of the electron energy spectrum (power-law index)
swea_spectrum_shape_quality	float64	Quality flag for electron spectrum shape

SWIA -- Solar Wind Ion Analyzer -- solar wind proton density, velocity, temperature

Column	Type	Description
time	datetime64[us]	Timestamp of measurement (UTC)
swia_h_density	float64	Solar wind proton (H+) number density (cm^-3)
swia_h_density_quality	float64	Quality flag for proton density (0=good)
swia_h_velocity_mso_x	float64	Proton bulk velocity, MSO X component (km/s; X points Sun->Mars)
swia_h_velocity_mso_x_quality	float64	Quality flag for proton velocity MSO-X
swia_h_velocity_mso_y	float64	Proton bulk velocity, MSO Y component (km/s)
swia_h_velocity_mso_y_quality	float64	Quality flag for proton velocity MSO-Y
swia_h_velocity_mso_z	float64	Proton bulk velocity, MSO Z component (km/s; Z toward north ecliptic pole)
swia_h_velocity_mso_z_quality	float64	Quality flag for proton velocity MSO-Z
swia_h_temperature	float64	Proton temperature (eV), from isotropic Maxwellian fit
swia_h_temperature_quality	float64	Quality flag for proton temperature
swia_dynamic_pressure	float64	Solar wind dynamic pressure (nPa), 0.5 * n * m_p * v^2
swia_dynamic_pressure_quality	float64	Quality flag for solar wind dynamic pressure

STATIC -- Suprathermal and Thermal Ion Composition -- ion mass/charge composition and energy spectra

Column	Type	Description
time	datetime64[us]	Timestamp of measurement (UTC)
static_quality_flag	float64	Overall STATIC instrument quality flag (0=good)
static_h_density	float64	Hydrogen ion (H+) density in the ionosphere (cm^-3)
static_h_density_quality	float64	Quality flag for H+ density
static_o_density	float64	Oxygen ion (O+) density (cm^-3), primary ionospheric ion
static_o_density_quality	float64	Quality flag for O+ density
static_o2_density	float64	Molecular oxygen ion (O2+) density (cm^-3), dominant below ~200 km
static_o2_density_quality	float64	Quality flag for O2+ density
static_h_temperature	float64	H+ ion temperature (eV)
static_h_temperature_quality	float64	Quality flag for H+ temperature
static_o_temperature	float64	O+ ion temperature (eV)
static_o_temperature_quality	float64	Quality flag for O+ temperature
static_o2_temperature	float64	O2+ ion temperature (eV)
static_o2_temperature_quality	float64	Quality flag for O2+ temperature
static_o2_velocity_app_x	float64	O2+ bulk velocity, spacecraft APP frame X component (km/s)
static_o2_velocity_app_x_quality	float64	Quality flag for O2+ velocity APP-X
static_o2_velocity_app_y	float64	O2+ bulk velocity, spacecraft APP frame Y component (km/s)
static_o2_velocity_app_y_quality	float64	Quality flag for O2+ velocity APP-Y
static_o2_velocity_app_z	float64	O2+ bulk velocity, spacecraft APP frame Z component (km/s)
static_o2_velocity_app_z_quality	float64	Quality flag for O2+ velocity APP-Z
static_o2_velocity_mso_x	float64	O2+ bulk velocity, MSO frame X component (km/s)
static_o2_velocity_mso_x_quality	float64	Quality flag for O2+ velocity MSO-X
static_o2_velocity_mso_y	float64	O2+ bulk velocity, MSO frame Y component (km/s)
static_o2_velocity_mso_y_quality	float64	Quality flag for O2+ velocity MSO-Y
static_o2_velocity_mso_z	float64	O2+ bulk velocity, MSO frame Z component (km/s)
static_o2_velocity_mso_z_quality	float64	Quality flag for O2+ velocity MSO-Z
static_h_omni_flux	float64	H+ omnidirectional differential particle flux (cm^-2 s^-1 sr^-1 eV^-1)
static_h_energy	float64	H+ characteristic energy (eV)
static_h_energy_quality	float64	Quality flag for H+ characteristic energy
static_he_omni_flux	float64	He2+ omnidirectional differential particle flux (cm^-2 s^-1 sr^-1 eV^-1)
static_he_energy	float64	He2+ characteristic energy (eV)
static_he_energy_quality	float64	Quality flag for He2+ characteristic energy
static_o_omni_flux	float64	O+ omnidirectional differential particle flux (cm^-2 s^-1 sr^-1 eV^-1)
static_o_energy	float64	O+ characteristic energy (eV)
static_o_energy_quality	float64	Quality flag for O+ characteristic energy
static_o2_omni_flux	float64	O2+ omnidirectional differential particle flux (cm^-2 s^-1 sr^-1 eV^-1)
static_o2_energy	float64	O2+ characteristic energy (eV)
static_o2_energy_quality	float64	Quality flag for O2+ characteristic energy
static_h_dir_mso_x	float64	H+ dominant flow direction, MSO X component (unit vector)
static_h_dir_mso_y	float64	H+ dominant flow direction, MSO Y component (unit vector)
static_h_dir_mso_z	float64	H+ dominant flow direction, MSO Z component (unit vector)
static_h_angular_width	float64	H+ beam angular half-width (degrees)
static_h_angular_width_quality	float64	Quality flag for H+ angular width
static_pickup_dir_mso_x	float64	Pickup ion dominant flow direction, MSO X (unit vector)
static_pickup_dir_mso_y	float64	Pickup ion dominant flow direction, MSO Y (unit vector)
static_pickup_dir_mso_z	float64	Pickup ion dominant flow direction, MSO Z (unit vector)
static_pickup_angular_width	float64	Pickup ion beam angular half-width (degrees)
static_pickup_angular_width_quality	float64	Quality flag for pickup ion angular width

SEP -- Solar Energetic Particle -- high-energy particle fluxes from solar events

Column	Type	Description
time	datetime64[us]	Timestamp of measurement (UTC)
sep_ion_fov1f	float64	Ion integral flux, SEP sensor 1 forward FOV (cm^-2 s^-1 sr^-1)
sep_ion_fov1f_quality	float64	Quality flag for SEP sensor 1 forward ion flux
sep_ion_fov1r	float64	Ion integral flux, SEP sensor 1 reverse FOV (cm^-2 s^-1 sr^-1)
sep_ion_fov1r_quality	float64	Quality flag for SEP sensor 1 reverse ion flux
sep_ion_fov2f	float64	Ion integral flux, SEP sensor 2 forward FOV (cm^-2 s^-1 sr^-1)
sep_ion_fov2f_quality	float64	Quality flag for SEP sensor 2 forward ion flux
sep_ion_fov2r	float64	Ion integral flux, SEP sensor 2 reverse FOV (cm^-2 s^-1 sr^-1)
sep_ion_fov2r_quality	float64	Quality flag for SEP sensor 2 reverse ion flux
sep_electron_fov1f	float64	Electron integral flux, SEP sensor 1 forward FOV (cm^-2 s^-1 sr^-1)
sep_electron_fov1f_quality	float64	Quality flag for SEP sensor 1 forward electron flux
sep_electron_fov1r	float64	Electron integral flux, SEP sensor 1 reverse FOV (cm^-2 s^-1 sr^-1)
sep_electron_fov1r_quality	float64	Quality flag for SEP sensor 1 reverse electron flux
sep_electron_fov2f	float64	Electron integral flux, SEP sensor 2 forward FOV (cm^-2 s^-1 sr^-1)
sep_electron_fov2f_quality	float64	Quality flag for SEP sensor 2 forward electron flux
sep_electron_fov2r	float64	Electron integral flux, SEP sensor 2 reverse FOV (cm^-2 s^-1 sr^-1)
sep_electron_fov2r_quality	float64	Quality flag for SEP sensor 2 reverse electron flux
sep_look_1f_mso_x	float64	SEP sensor 1 forward look direction, MSO X (unit vector)
sep_look_1f_mso_y	float64	SEP sensor 1 forward look direction, MSO Y (unit vector)
sep_look_1f_mso_z	float64	SEP sensor 1 forward look direction, MSO Z (unit vector)
sep_look_1r_mso_x	float64	SEP sensor 1 reverse look direction, MSO X (unit vector)
sep_look_1r_mso_y	float64	SEP sensor 1 reverse look direction, MSO Y (unit vector)
sep_look_1r_mso_z	float64	SEP sensor 1 reverse look direction, MSO Z (unit vector)
sep_look_2f_mso_x	float64	SEP sensor 2 forward look direction, MSO X (unit vector)
sep_look_2f_mso_y	float64	SEP sensor 2 forward look direction, MSO Y (unit vector)
sep_look_2f_mso_z	float64	SEP sensor 2 forward look direction, MSO Z (unit vector)
sep_look_2r_mso_x	float64	SEP sensor 2 reverse look direction, MSO X (unit vector)
sep_look_2r_mso_y	float64	SEP sensor 2 reverse look direction, MSO Y (unit vector)
sep_look_2r_mso_z	float64	SEP sensor 2 reverse look direction, MSO Z (unit vector)

MAG -- Magnetometer -- magnetic field vector components (MSO and GEO frames)

Column	Type	Description
time	datetime64[us]	Timestamp of measurement (UTC)
mag_mso_x	float64	Magnetic field vector, MSO X component (nT; X points Sun->Mars)
mag_mso_x_quality	float64	Quality flag for magnetic field MSO-X
mag_mso_y	float64	Magnetic field vector, MSO Y component (nT)
mag_mso_y_quality	float64	Quality flag for magnetic field MSO-Y
mag_mso_z	float64	Magnetic field vector, MSO Z component (nT; Z toward north ecliptic pole)
mag_mso_z_quality	float64	Quality flag for magnetic field MSO-Z
mag_geo_x	float64	Magnetic field vector, areocentric GEO X component (nT)
mag_geo_x_quality	float64	Quality flag for magnetic field GEO-X
mag_geo_y	float64	Magnetic field vector, areocentric GEO Y component (nT)
mag_geo_y_quality	float64	Quality flag for magnetic field GEO-Y
mag_geo_z	float64	Magnetic field vector, areocentric GEO Z component (nT; Z toward Mars north pole)
mag_geo_z_quality	float64	Quality flag for magnetic field GEO-Z
mag_rms_deviation	float64	RMS deviation of the magnetic field magnitude over the accumulation window (nT)
mag_rms_quality	float64	Quality flag for magnetic field RMS deviation

NGIMS -- Neutral Gas and Ion Mass Spectrometer -- neutral and ion densities in upper atmosphere

Column	Type	Description
time	datetime64[us]	Timestamp of measurement (UTC)
ngims_he	float64	Helium (He) neutral number density in the upper atmosphere (cm^-3)
ngims_he_precision	float64	1-sigma precision of the He density measurement
ngims_he_quality	object	Quality flag for He density (0=good)
ngims_o	float64	Atomic oxygen (O) neutral number density (cm^-3)
ngims_o_precision	float64	1-sigma precision of the O density measurement
ngims_o_quality	object	Quality flag for O density
ngims_co	float64	Carbon monoxide (CO) neutral number density (cm^-3)
ngims_co_precision	float64	1-sigma precision of the CO density measurement
ngims_co_quality	object	Quality flag for CO density
ngims_n2	float64	Molecular nitrogen (N2) neutral number density (cm^-3), dominant above ~200 km
ngims_n2_precision	float64	1-sigma precision of the N2 density measurement
ngims_n2_quality	object	Quality flag for N2 density
ngims_no	float64	Nitric oxide (NO) neutral number density (cm^-3)
ngims_no_precision	float64	1-sigma precision of the NO density measurement
ngims_no_quality	float64	Quality flag for NO density
ngims_ar	float64	Argon (Ar) neutral number density (cm^-3), used as inert tracer
ngims_ar_precision	float64	1-sigma precision of the Ar density measurement
ngims_ar_quality	object	Quality flag for Ar density
ngims_co2	float64	Carbon dioxide (CO2) neutral number density (cm^-3), dominant below ~200 km
ngims_co2_precision	float64	1-sigma precision of the CO2 density measurement
ngims_co2_quality	object	Quality flag for CO2 density
ngims_ion32	float64	Ion density at m/z=32, primarily O2+ (cm^-3)
ngims_ion32_precision	float64	1-sigma precision of the m/z=32 ion density
ngims_ion32_quality	object	Quality flag for m/z=32 ion density
ngims_ion44	float64	Ion density at m/z=44, primarily CO2+ (cm^-3)
ngims_ion44_precision	float64	1-sigma precision of the m/z=44 ion density
ngims_ion44_quality	object	Quality flag for m/z=44 ion density
ngims_ion30	float64	Ion density at m/z=30, primarily NO+ (cm^-3)
ngims_ion30_precision	float64	1-sigma precision of the m/z=30 ion density
ngims_ion30_quality	object	Quality flag for m/z=30 ion density
ngims_ion16	float64	Ion density at m/z=16, primarily O+ (cm^-3)
ngims_ion16_precision	float64	1-sigma precision of the m/z=16 ion density
ngims_ion16_quality	object	Quality flag for m/z=16 ion density
ngims_ion28	float64	Ion density at m/z=28, CO+ or N2+ (cm^-3)
ngims_ion28_precision	float64	1-sigma precision of the m/z=28 ion density
ngims_ion28_quality	object	Quality flag for m/z=28 ion density
ngims_ion12	float64	Ion density at m/z=12, primarily C+ (cm^-3)
ngims_ion12_precision	float64	1-sigma precision of the m/z=12 ion density
ngims_ion12_quality	object	Quality flag for m/z=12 ion density
ngims_ion17	float64	Ion density at m/z=17, primarily OH+ (cm^-3)
ngims_ion17_precision	float64	1-sigma precision of the m/z=17 ion density
ngims_ion17_quality	object	Quality flag for m/z=17 ion density
ngims_ion14	float64	Ion density at m/z=14, primarily N+ (cm^-3)
ngims_ion14_precision	float64	1-sigma precision of the m/z=14 ion density
ngims_ion14_quality	object	Quality flag for m/z=14 ion density

SPICE -- Spacecraft ephemeris -- position, attitude, altitude, solar zenith angle, orbit metadata

Column	Type	Description
time	datetime64[us]	Timestamp of measurement (UTC)
spice_geo_x	float64	Spacecraft position, areocentric GEO X component (km)
spice_geo_y	float64	Spacecraft position, areocentric GEO Y component (km)
spice_geo_z	float64	Spacecraft position, areocentric GEO Z component (km; toward Mars north pole)
spice_mso_x	float64	Spacecraft position, MSO frame X component (km; X points Sun->Mars)
spice_mso_y	float64	Spacecraft position, MSO frame Y component (km)
spice_mso_z	float64	Spacecraft position, MSO frame Z component (km; Z toward north ecliptic pole)
spice_longitude	float64	Sub-spacecraft point east longitude on Mars (degrees, 0-360)
spice_latitude	float64	Sub-spacecraft point latitude on Mars (degrees, -90 to +90)
spice_solar_zenith_angle	float64	Solar zenith angle at the sub-spacecraft point (degrees, 0=subsolar)
spice_local_time	float64	Local solar time at the sub-spacecraft point (hours, 0-24)
spice_altitude	float64	Spacecraft altitude above Mars areoid (km)
spice_sc_att_geo_x	float64	Spacecraft +Z axis direction, GEO frame X component (unit vector)
spice_sc_att_geo_y	float64	Spacecraft +Z axis direction, GEO frame Y component (unit vector)
spice_sc_att_geo_z	float64	Spacecraft +Z axis direction, GEO frame Z component (unit vector)
spice_sc_att_mso_x	float64	Spacecraft +Z axis direction, MSO frame X component (unit vector)
spice_sc_att_mso_y	float64	Spacecraft +Z axis direction, MSO frame Y component (unit vector)
spice_sc_att_mso_z	float64	Spacecraft +Z axis direction, MSO frame Z component (unit vector)
spice_app_geo_x	float64	Articulated Payload Platform (APP) boresight, GEO frame X (unit vector)
spice_app_geo_y	float64	Articulated Payload Platform (APP) boresight, GEO frame Y (unit vector)
spice_app_geo_z	float64	Articulated Payload Platform (APP) boresight, GEO frame Z (unit vector)
spice_app_mso_x	float64	Articulated Payload Platform (APP) boresight, MSO frame X (unit vector)
spice_app_mso_y	float64	Articulated Payload Platform (APP) boresight, MSO frame Y (unit vector)
spice_app_mso_z	float64	Articulated Payload Platform (APP) boresight, MSO frame Z (unit vector)
spice_orbit_number	int64	MAVEN orbit number since Mars orbit insertion (September 2014)
spice_inbound_outbound	str	Orbit phase flag: +1=inbound (before periapsis), -1=outbound (after periapsis)
spice_mars_season_ls	float64	Mars solar longitude Ls (degrees; 0=northern spring equinox)
spice_mars_sun_distance_au	float64	Mars-Sun distance (AU)
spice_subsolar_longitude	float64	Sub-solar point east longitude on Mars (degrees)
spice_subsolar_latitude	float64	Sub-solar point latitude on Mars (degrees)
spice_submars_sun_longitude	float64	Sub-Mars point longitude as seen from the Sun (degrees)
spice_submars_sun_latitude	float64	Sub-Mars point latitude as seen from the Sun (degrees)
spice_rot_mars_r1c1	float64	Mars body-fixed to inertial rotation matrix, element [1,1]
spice_rot_mars_r1c2	float64	Mars body-fixed to inertial rotation matrix, element [1,2]
spice_rot_mars_r1c3	float64	Mars body-fixed to inertial rotation matrix, element [1,3]
spice_rot_mars_r2c1	float64	Mars body-fixed to inertial rotation matrix, element [2,1]
spice_rot_mars_r2c2	float64	Mars body-fixed to inertial rotation matrix, element [2,2]
spice_rot_mars_r2c3	float64	Mars body-fixed to inertial rotation matrix, element [2,3]
spice_rot_mars_r3c1	float64	Mars body-fixed to inertial rotation matrix, element [3,1]
spice_rot_mars_r3c2	float64	Mars body-fixed to inertial rotation matrix, element [3,2]
spice_rot_mars_r3c3	float64	Mars body-fixed to inertial rotation matrix, element [3,3]
spice_rot_sc_r1c1	float64	Spacecraft body to inertial rotation matrix, element [1,1]
spice_rot_sc_r1c2	float64	Spacecraft body to inertial rotation matrix, element [1,2]
spice_rot_sc_r1c3	float64	Spacecraft body to inertial rotation matrix, element [1,3]
spice_rot_sc_r2c1	float64	Spacecraft body to inertial rotation matrix, element [2,1]
spice_rot_sc_r2c2	float64	Spacecraft body to inertial rotation matrix, element [2,2]
spice_rot_sc_r2c3	float64	Spacecraft body to inertial rotation matrix, element [2,3]
spice_rot_sc_r3c1	float64	Spacecraft body to inertial rotation matrix, element [3,1]
spice_rot_sc_r3c2	float64	Spacecraft body to inertial rotation matrix, element [3,2]
spice_rot_sc_r3c3	float64	Spacecraft body to inertial rotation matrix, element [3,3]

Quick stats

• 8,691,683 total measurements across 8 instruments
• Time span: 2025-04-01 to 2025-08-14
• Cadence: 4-8 seconds

Usage

from datasets import load_dataset

# Load a single instrument
ds = load_dataset("juliensimon/nasa-maven-kp-insitu", "mag", split="train")
df_mag = ds.to_pandas()

# Load and join multiple instruments
ds_spice = load_dataset("juliensimon/nasa-maven-kp-insitu", "spice", split="train")
ds_swia = load_dataset("juliensimon/nasa-maven-kp-insitu", "swia", split="train")
df = ds_spice.to_pandas().merge(ds_swia.to_pandas(), on="time")

# Filter by altitude for ionospheric studies (< 500 km)
import matplotlib.pyplot as plt
df_iono = df[df["spice_altitude"] < 500]
plt.scatter(df_iono["spice_solar_zenith_angle"], df_iono["swia_h_density"], s=0.1, alpha=0.3)
plt.xlabel("Solar Zenith Angle (deg)")
plt.ylabel("Proton Density (cm^-3)")
plt.title("Solar Wind Density vs Solar Zenith Angle")
plt.show()

Data source

LASP SDC -- NASA MAVEN Science Data Center at the Laboratory for Atmospheric and Space Physics, University of Colorado Boulder.

Related datasets

• juliensimon/esa-exomars-tgo-observations
• juliensimon/esa-mars-express-observations
• juliensimon/meda-weather
• juliensimon/solar-wind

Citation

@dataset{maven_kp_insitu,
  title = {NASA MAVEN Key Parameters (In-Situ)},
  author = {juliensimon},
  year = {2026},
  url = {https://huggingface.co/datasets/juliensimon/nasa-maven-kp-insitu},
  publisher = {Hugging Face}
}

License

CC-BY-4.0