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View article: Accelerometer Measurements for Orbit and Gravity Recovery: Challenges and Benefits for the BepiColombo Mission
Accelerometer Measurements for Orbit and Gravity Recovery: Challenges and Benefits for the BepiColombo Mission Open
The European Space Agency's BepiColombo mission continues its pioneering voyage to Mercury, the innermost planet of the Solar System. Among the advanced instruments onboard the Mercury Planetary Orbiter (MPO) is the Italian Spring Accelero…
View article: First Use of Laser Ranging to Surface Retroreflectors for Orbit Determination: LRO-LOLA at the Moon
First Use of Laser Ranging to Surface Retroreflectors for Orbit Determination: LRO-LOLA at the Moon Open
We document the first operational demonstration of two-way spacecraft-to-surface laser ranging using Laser Retroreflector Arrays (LRAs) for orbit determination (OD) of the Lunar Reconnaissance Orbiter (LRO). We detail how the Lunar Orbiter…
View article: The solar corona butterfly diagram
The solar corona butterfly diagram Open
Context. Since the discovery of solar magnetism, the study of magnetic fields on the Sun has long been a central focus. The effects of the solar cycle on the photospheric magnetic fields have been extensively inspected, whereas those on th…
View article: Potential Survivable Niches for Microbial Life at the Lunar Poles
Potential Survivable Niches for Microbial Life at the Lunar Poles Open
Environmental conditions on most of the lunar surface are incredibly harsh for the survival of most microbial life, due to a combination of high doses of ultraviolet (UV) radiation, energetic particle radiation, high temperatures and desic…
View article: Radarclinometry at Venus: first results and validation strategies
Radarclinometry at Venus: first results and validation strategies Open
Motivation: The past few years have seen a renewed interest in Venus, with multiple missions planned for the early 2030s. Currently, the main source of topographic information at Venus is from the SAR onboard Magellan, which in its altimet…
View article: Combined MLA and BELA altimetry crossover analyses for Mercury geodesy and interior studies
Combined MLA and BELA altimetry crossover analyses for Mercury geodesy and interior studies Open
The Mercury Laser Altimeter (MLA) on board of the Mercury Surface, Space Environment, Geochemistry and Ranging (MESSENGER) mission provided the first high-resolution topographic models and geodetic insights about Mercury’s internal structu…
View article: Mercury’s librations from self-registration of MESSENGER laser profiles
Mercury’s librations from self-registration of MESSENGER laser profiles Open
Mercury is locked in a 3:2 spin-orbit resonance. Moreover, the combination of its non-spherical shape and eccentric orbit lead to reversing torques that produce small periodic changes in its spin rate, a motion referred to as forced (physi…
View article: Combination of altimetry crossovers and Doppler observables for orbit determination and geodetic parameter recovery: Application to Callisto
Combination of altimetry crossovers and Doppler observables for orbit determination and geodetic parameter recovery: Application to Callisto Open
International audience
View article: Advances in MLA and BELA altimetry crossover analyses for Mercury geodesy
Advances in MLA and BELA altimetry crossover analyses for Mercury geodesy Open
The analysis of the wide-range of data retrieved by the NASA MESSENGER mission to Mercury allowed for a transformative improvement of our knowledge of the planet [1], which is now viewed as a cornerstone for our understanding of the evolut…
View article: Observation of meteors from space with the Mini-EUSO detector on board the International Space Station
Observation of meteors from space with the Mini-EUSO detector on board the International Space Station Open
Context . Observations of meteors in the Earth’s atmosphere offer a unique tool for determining the flux of meteoroids that are too small to be detected by direct telescopic observations. Although these objects are routinely observed from …
View article: Combination of altimetry crossover and Doppler observables for Precise Orbit Determination of a Callisto Orbiter and Geodetic Parameter Recovery
Combination of altimetry crossover and Doppler observables for Precise Orbit Determination of a Callisto Orbiter and Geodetic Parameter Recovery Open
Callisto is identified as a key body to answer present questions about the origin and the formation of the Jovian system. The outermost of the four Galilean satellites appears to be the least differentiated and the least geologically evolv…
View article: Fast hierarchical low-rank view factor matrices for thermal irradiance on planetary surfaces
Fast hierarchical low-rank view factor matrices for thermal irradiance on planetary surfaces Open
We present an algorithm for compressing the radiosity view factor model commonly used in radiation heat transfer and computer graphics. We use a format inspired by the hierarchical off-diagonal low rank format, where elements are recursive…
View article: Simulation Study for Precise Orbit Determination of a Callisto Orbiter and Geodetic Parameter Recovery
Simulation Study for Precise Orbit Determination of a Callisto Orbiter and Geodetic Parameter Recovery Open
Callisto, the outermost of the four Galilean satellites, is identified as a key body to answer present questions about the origin and the formation of the Jovian system. Callisto appears to be the least differentiated and the geologically …
View article: Supplementary material to: Highly resolved topography and illumination at Mercury south pole from MESSENGER MDIS-NAC
Supplementary material to: Highly resolved topography and illumination at Mercury south pole from MESSENGER MDIS-NAC Open
We produced a new higher-resolution topographic map of Mercury’s south polar region (75°-90° South, covering ~1.3 million km2) by using data collected by the NASA MESSENGER spacecraft’s Mercury Dual Imaging System (MDIS; Hawkins…
View article: Supplementary material to: Highly resolved topography and illumination at Mercury south pole from MESSENGER MDIS-NAC
Supplementary material to: Highly resolved topography and illumination at Mercury south pole from MESSENGER MDIS-NAC Open
<p>We produced a new higher-resolution topographic map of Mercury’s south polar region (75°-90° South, covering ~1.3 million km<sup>2</sup>) by using data collected by the NASA MESSENGER spacecraft’s M…
View article: Influence of low orbit design and strategies for gravity field recovery of Europa
Influence of low orbit design and strategies for gravity field recovery of Europa Open
International audience
View article: Bernese GNSS Software
Bernese GNSS Software Open
View article: Fast hierarchical low-rank view factor matrices for thermal irradiance on planetary surfaces
Fast hierarchical low-rank view factor matrices for thermal irradiance on planetary surfaces Open
We present an algorithm for compressing the radiosity view factor model commonly used in radiation heat transfer and computer graphics. We use a format inspired by the hierarchical off-diagonal low rank format, where elements are recursive…
View article: Evaluation of Recent Measurements of Mercury’s Moments of Inertia and Tides Using a Comprehensive Markov Chain Monte Carlo Method
Evaluation of Recent Measurements of Mercury’s Moments of Inertia and Tides Using a Comprehensive Markov Chain Monte Carlo Method Open
Recent estimates of Mercury’s rotational state yield different obliquity values, resulting in normalized polar moment of inertia values of either 0.333 or 0.346. In addition, recent measurements of Mercury’s tidal response, as expressed by…
View article: Fast Hierarchical Low-Rank View Factor Matrices for Thermal Irradiance on Planetary Surfaces
Fast Hierarchical Low-Rank View Factor Matrices for Thermal Irradiance on Planetary Surfaces Open
View article: Gaia Data Release 2. The astrometric solution
Gaia Data Release 2. The astrometric solution Open
Gaia Data Release 2 (Gaia DR2) contains results for 1693 million sources in the magnitude range 3 to 21 based on observations collected by the European Space Agency Gaia satellite during the first 22 months of its operational phase. We des…
View article: Theia: Faint objects in motion or the new astrometry frontier
Theia: Faint objects in motion or the new astrometry frontier Open
In the context of the ESA M5 (medium mission) call we proposed a new satellite mission, Theia, based on relative astrometry and extreme precision to study the motion of very faint objects in the Universe. Theia is primarily designed to stu…
View article: Assessing Reduced‐Dynamic Parametrizations for GRAIL Orbit Determination and the Recovery of Independent Lunar Gravity Field Solutions
Assessing Reduced‐Dynamic Parametrizations for GRAIL Orbit Determination and the Recovery of Independent Lunar Gravity Field Solutions Open
Orbit determination of probes visiting Solar System bodies is currently the main source of our knowledge about their internal structure, inferred from the estimate of their gravity field and rotational state. Nongravitational forces acting…
View article: Influence of Low Europa Orbit design on gravity field recovery
Influence of Low Europa Orbit design on gravity field recovery Open
BORIS Bern Open Repository and Information SystemUniversity of BernHomeStatistics Influence of Low Europa Orbit design on gravity field recovery Desprats, W.; Bertone, S.; Arnold, D.; Jäggi, A.; Blanc, M. (2021). Influence of Low Europa Or…
View article: Impact of accelerometer modelling and parameterization on the BepiColombo orbit determination and gravimetry experiment
Impact of accelerometer modelling and parameterization on the BepiColombo orbit determination and gravimetry experiment Open
Impact of accelerometer noise modelling and its parameterization on the MPO orbit determination and gravimetry experiment
View article: Gaia Early Data Release 3: The astrometric solution
Gaia Early Data Release 3: The astrometric solution Open
Gaia Early Data Release 3 (Gaia EDR3) contains results for 1.812 billion sources in the magnitude range G = 3 to 21 based on observations collected by the European Space Agency Gaia satellite during the first 34 months of its operational p…
View article: <i>Gaia</i>Early Data Release 3
<i>Gaia</i>Early Data Release 3 Open
Context. Gaia Early Data Release 3 ( Gaia EDR3) contains results for 1.812 billion sources in the magnitude range G = 3–21 based on observations collected by the European Space Agency Gaia satellite during the first 34 months of its operat…
View article: Influence of Low Callisto Orbit design on gravity field recovery
Influence of Low Callisto Orbit design on gravity field recovery Open
The gravity field of Callisto can be inferred using radio tracking data from a low-altitude orbiter around the icy moon. Orbit possibilities around Callisto are currently under study for the Gan De mission proposal [2]. However, gravity fi…
View article: Latest update of Mercury geodetic parameters with altimetric crossovers from the Mercury Laser Altimeter (MLA)
Latest update of Mercury geodetic parameters with altimetric crossovers from the Mercury Laser Altimeter (MLA) Open
Based on previous applications of laser altimetry to planetary geodesy at GSFC [Mazarico et al. (2014)], we use the recently developed PyXover software package to analyze altimetric crossovers from the Mercury Laser Altimeter (MLA) and imp…
View article: Non-gravitational forces acting on spacecraft: impact of different atmospheric models on LEO orbits
Non-gravitational forces acting on spacecraft: impact of different atmospheric models on LEO orbits Open