O. Stenzel
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View article: Hermean curvature-based geomorphic feature classification using Laser Altimetry data
Hermean curvature-based geomorphic feature classification using Laser Altimetry data Open
This study introduces an automated method for extracting and tracking geomorphic features on Mercury by leveraging high-resolution Digital Terrain Models (DTMs) generated from MESSENGER’s Mercury Laser Altimeter (MLA) data (Cavanaugh et al…
View article: Mission Design and Target Selection for PRIAMOS, a European Asteroid Sample Return Mission
Mission Design and Target Selection for PRIAMOS, a European Asteroid Sample Return Mission Open
We report on the mission design and the target selection for the PRIAMOS (PRImordial Asteroid Mission to understand the Origin of the Solar system) mission to a D-type asteroid in a near Earth orbit [1]. PRIAMOS consists of a lander/return…
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:  Mercury's Love number h2: Expected error range throughout the BepiColombo mission
 Mercury's Love number h2: Expected error range throughout the BepiColombo mission Open
Introduction: Mercury, the innermost planet in the Solar System, remains an enigma due to significant gaps in our understanding of its internal structure. Recent advancements in planetary science have highlighted the potential of tidal Lov…
View article: Mercury's annual and long-term librations from self-registration of MLA profiles 
Mercury's annual and long-term librations from self-registration of MLA profiles  Open
Mercury's annual longitudinal libration (88 days) and its mean rotation rate have been  determined based on independent observations from the ground-based radar (Margot et al., 2012), camera and/or laser altimetry (Stark et al., 2015;…
View article: Smooth Hermean surface extraction by Region Growing from MESSENGER Laser Altimeter Data 
Smooth Hermean surface extraction by Region Growing from MESSENGER Laser Altimeter Data  Open
The detailed and accurate shape of the terrain is necessary for some fields, such as geodetic analysis and geomorphology, which are concerned with the physical processes of a planet and its orbital attitudes. The Mercury Laser Altimeter (M…
View article: Planetary Defense Clues from Returning Samples from a Near Earth Asteroid (NEA) – Apophis Encounter as a Unique Chance
Planetary Defense Clues from Returning Samples from a Near Earth Asteroid (NEA) – Apophis Encounter as a Unique Chance Open
The upcoming passing of (99942) Apophis by Earth in 2029 within just a few ten thousand km presents a unique opportunity to study a potentially hazardous Near Earth Asteroid (PHA, NEA). This opportunity will be used by ground based observa…
View article: Evidence of Pre-Accretion Irradiation of Cometary Minerals in the Inner Solar System
Evidence of Pre-Accretion Irradiation of Cometary Minerals in the Inner Solar System Open
International audience
View article: Measured mechanical, optical and electrical properties of dust partciles collected in the coma of comet 67/P
Measured mechanical, optical and electrical properties of dust partciles collected in the coma of comet 67/P Open
During the ESA ROSETTA science mission to comet 67P/Churyumov-Gerasimenko, the dust particle analysing instrument COSIMA sampled dust in the size range from a few um to mm equivalent diameter in the inner coma of the comet.  The parti…
View article: AI Assisted Data Selection of Laser Altimeter Observations
AI Assisted Data Selection of Laser Altimeter Observations Open
Laser altimeters create large amounts of data that often have to be preprocessed and checked before further use. The BepiColombo mission to Mercury is set to arrive in December 2025 and observations with the BepiColombo Laser Altimeter (BE…
View article: A space instrument combining NIR hyperspectral microscopy and Laser-CosmOrbitrap mass spectrometry for the in situ analysis of extraterrestrial dust
A space instrument combining NIR hyperspectral microscopy and Laser-CosmOrbitrap mass spectrometry for the in situ analysis of extraterrestrial dust Open
<p><strong>Introduction:</strong> The Rosetta mission is one of the latest great scientific and technological European successes. The probe and its lander Philae, transported some very audacious and inventive instruments …
View article: Detection and Handling of Noise in Laser Altimetry Data: a Prerequisite for Tides Derivation
Detection and Handling of Noise in Laser Altimetry Data: a Prerequisite for Tides Derivation Open
<p>The ESA/Jaxa mission BepiColombo[1] to Mercury will arrive in orbit in 2025. Onboard is the BepiColombo Laser Altimeter (BELA)[2], which will be used to scan the planetary surface. We plan on using these data to derive the tidal p…
View article: Elemental Composition and Optical Properties of Cometary Dust Particles in the Coma of Comet 67P
Elemental Composition and Optical Properties of Cometary Dust Particles in the Coma of Comet 67P Open
<p>The COmetary Secondary Ion Mass Analyser (COSIMA) instrument on board ESA's Rosetta mission to comet 67P/Churyumov&#8211;Gerasimenko has collected and analysed dust particles in the inner coma from August 2014 to September 201…
View article: Towards machine learning assisted error identification in orbital laser altimetry for tides derivation
Towards machine learning assisted error identification in orbital laser altimetry for tides derivation Open
Laser altimetry experiments on the NASA MESSENGER mission [1], and on the currently on cruise ESA/JAXA BepiColombo Mission [2,3] did and are going to yield, respectively, a plethora of range measurements of the surface of Mercury. Orbital …
View article: D/H in the refractory organics of comet 67P/Churyumov-Gerasimenko measured by <i>Rosetta</i>/COSIMA
D/H in the refractory organics of comet 67P/Churyumov-Gerasimenko measured by <i>Rosetta</i>/COSIMA Open
The D/H ratio is a clue to the origin and evolution of hydrogen-bearing chemical species in Solar system materials. D/H has been observed in the coma of many comets, but most such measurements have been for gaseous water. We present the fi…
View article: Error identification in orbital laser altimeter data by machine learning
Error identification in orbital laser altimeter data by machine learning Open
<p>Orbital Laser altimeters deliver a plethora of data that is used to map planetary surfaces [1] and to understand interiors of solar system bodies [2]. Accuracy and precision of laser altimetry measurements depend on the knowledge …
View article: Towards the extraction of the tidal signal from MESSENGER MLA data
Towards the extraction of the tidal signal from MESSENGER MLA data Open
We analyze data of the Mercury Laser Altimeter (MLA) aboard the MErcury Surface, Space ENvironment, GEochemistry, and Ranging (MESSENGER) spacecraft to infer Mercury’s reaction to tidal forces. The combination of the surface displace…
View article: Composition of cometary particles collected during two periods of the Rosetta mission: multivariate evaluation of mass spectral data
Composition of cometary particles collected during two periods of the Rosetta mission: multivariate evaluation of mass spectral data Open
The instrument COSIMA (COmetary Secondary Ion Mass Analyzer) onboard of the European Space Agency mission Rosetta collected and analyzed dust particles in the neighborhood of comet 67P/Churyumov‐Gerasimenko. The chemical composition of the…
View article: The Morphological, Elastic, and Electric Properties of Dust Aggregates in Comets: A Close Look at COSIMA/Rosetta's Data on Dust in Comet 67P/Churyumov-Gerasimenko
The Morphological, Elastic, and Electric Properties of Dust Aggregates in Comets: A Close Look at COSIMA/Rosetta's Data on Dust in Comet 67P/Churyumov-Gerasimenko Open
The Cometary Secondary Ion Mass Analyzer (COSIMA) onboard ESA's Rosetta orbiter has revealed that dust particles in the coma of Comet 67P/Churyumov-Gerasimenko are aggregates of small grains. We study the morphological, elastic, and electr…
View article: H/C elemental ratio of the refractory organic matter in cometary particles of 67P/Churyumov-Gerasimenko
H/C elemental ratio of the refractory organic matter in cometary particles of 67P/Churyumov-Gerasimenko Open
Context. Because comets are part of the most primitive bodies of our solar system, establishing their chemical composition and comparing them to other astrophysical bodies gives new constraints on the formation and evolution of organic mat…
View article: H/C elemental ratios of the refractory organic matter in cometary particles of 67P/Churyumov-Gerasimenko
H/C elemental ratios of the refractory organic matter in cometary particles of 67P/Churyumov-Gerasimenko Open
International audience
View article: The D/H ratio in cometary dust measured by Rosetta/COSIMA
The D/H ratio in cometary dust measured by Rosetta/COSIMA Open
International audience
View article: The oxygen isotopic composition (18O/16O) in the dust of comet 67P/Churyumov-Gerasimenko measured by COSIMA on-board Rosetta
The oxygen isotopic composition (18O/16O) in the dust of comet 67P/Churyumov-Gerasimenko measured by COSIMA on-board Rosetta Open
The oxygen isotopic ratio 18O/16O has been
\nmeasured in cometary gas for a wide variety of comets, but the only
\nmeasurements in cometary dust were performed by the Stardust cometary
\nsample return mission. Most such measurements fin…
View article: Significance of variables for discrimination: Applied to the search of organic ions in mass spectra measured on cometary particles
Significance of variables for discrimination: Applied to the search of organic ions in mass spectra measured on cometary particles Open
The instrument Cometary Secondary Ion Mass Analyzer (COSIMA) on board of the European Space Agency mission Rosetta to the comet 67P/Churyumov‐Gerasimenko is a secondary ion mass spectrometer with a time‐of‐flight mass analyzer. It collecte…
View article: Errata: Searching for calcium‐aluminum‐rich inclusions in cometary particles with Rosetta/<scp>COSIMA</scp>
Errata: Searching for calcium‐aluminum‐rich inclusions in cometary particles with Rosetta/<span>COSIMA</span> Open
The article “Searching for calcium-aluminum-rich inclusions in cometary particles with Rosetta/COSIMA” was published in Meteoritics and Planetary Science 1–13 (2016). Here we correct two errors which became apparent while checking the refe…
View article: High-reflective coatings for ground and space based applications
High-reflective coatings for ground and space based applications Open
High-reflective coatings are indispensable in order to manufacture mirrors with highest possible reflectivity. The maximum reflectivity can be achieved by all-dielectric coatings; however, the spectral bandwidth of these mirrors is limited…
View article: Carbon-rich dust in comet 67P/Churyumov-Gerasimenko measured by COSIMA/Rosetta
Carbon-rich dust in comet 67P/Churyumov-Gerasimenko measured by COSIMA/Rosetta Open
Cometary ices are rich in CO2, CO and organic volatile
\ncompounds, but the carbon content of cometary dust was only measured for
\n the Oort Cloud comet 1P/Halley, during its flyby in 1986. The COmetary
\nSecondary Ion Mass Analyzer (CO…
View article: Evidence of sub-surface energy storage in comet 67P from the outburst of 2016 July 03
Evidence of sub-surface energy storage in comet 67P from the outburst of 2016 July 03 Open
On 2016 July 03, several instruments onboard ESA's Rosetta spacecraft detected signs of an outburst event on comet 67P, at a heliocentric distance of 3.32 au from the Sun, outbound from perihelion. We here report on the inferred properties…