Predicted times, spatial coordinates of bow shock crossings and shock geometry at Mars from the NASA/MAVEN mission, using spacecraft ephemerides and magnetic field data, with a predictor-corrector algorithm

• Main Authors: Simon Wedlund, Cyril, Volwerk, Martin, Beth, Arnaud, Mazelle, Christian, Möstl, Christian, Halekas, Jasper, Gruesbeck, Jacob, Rojas-Castillo, Diana
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2021
• Subjects: Bow shock; Mars; MAVEN; North Pole
• Online Access: https://doi.org/10.5281/zenodo.6320518

CHARACTERISTICS Planet: Mars Radius: R M = 3389.5 km (volumetric mean planetary radius) Spacecraft: NASA/Mars Atmosphere and Volatile Evolution (MAVEN) Spacecraft coordinates system: Mars Solar Orbital (MSO) equivalent to Sun-State coordinate system: + X MSO points towards the Sun from the planet’s centre, + Z MSO towards Mars’ North pole and perpendicular to the orbital plane defined as the X MSO – Y MSO plane passing through the centre of Mars, Y MSO completes the orthogonal system. Time span: 01/11/2014 to 07/02/2021 (Mars Years 32 to 35 included). Total number N of candidate bow shock crossings in the database: N = 14929 ORIGINAL DATASETS USED The original MAVEN/MAG data repository on which these algorithmswere applied is available on NASA's Planetary Data System (PDS) at https://doi.org/10.17189/1414178 .For this study, 1-Hz magnetic field data was used. METHOD To construct this database from the original datasets above, thepredictor and predictor-corrector algorithms used are described in: Simon Wedlund, C., Volwerk, M., Beth, A., Mazelle, C.,Möstl, C., Halekas, J., Gruesbeck, J. and Rojas-Castillo, D.,(2022), A Fast Bow Shock Location Predictor-Estimator From 2Dand 3D Analytical Models: Application to Mars and the MAVENmission, Journal of Geophysical Research , 127 , 1-33,e2021JA029942, https://doi. org/10.1029/2021JA029942 . Also available at: https://doi.org/10.1002/essoar.10507942.1 and as arXiv e-print: https://doi.org/10.48550/arXiv.2109.04366 These algorithms consist of two consecutive steps: Predictor geometric algorithm based on J. Gruesbeck's 3D model( Gruesbeck et al. 2018 ) for prediction of Mars bow shockposition Corrector algorithm based on magnetic field measurements (magnitude and fluctuations). REMARK ON VERSIONS From Version 3 onwards, we provide also the angle between the average Interplanetary Magnetic Field (IMF)vector upstream of the shock andthe shock normal, noted \(\theta_{Bn}\) (ThetaBn). Assuming a smooth shock surface andthe 3D model of Gruesbeck et al. (2018, all points), this ...