Results 81 to 90 of about 795 (205)

On the Possibility of Applying the Quasi-Isothermal Stäckel’s Model to Our Galaxy

open access: yesOpen Astronomy, 2015
An earlier derived quasi-isothermal Stäckel’s model of mass distribution in stellar systems and the corresponding formula for space density are applied to our Galaxy. The model rotation curve is fitted to HI kinematical data.
Gromov A. O.   +2 more
doaj   +1 more source

Liquid Apogee Engine Burn Plans for The KOREASAT-3 [PDF]

open access: yesJournal of Astronomy and Space Sciences, 1998
The apogee manoeuvre of is basic elliptical orbit transfer converting orbit plane. The KOREASAT-3 is planed for multi-burn manoeuvres using the liquid apogee engine while the used the apogee kick motor that executes a single burn in the apogee of ...
Jae-Cheol Yoon   +4 more
doaj  

Introducing the Azimuth Cutoff as an Independent Measure for Characterizing Sea-State Dynamics in SAR Altimetry

open access: yesRemote Sensing
This study presents the first azimuth cutoff analysis in Synthetic Aperture Radar (SAR) altimetry, aiming to assess its applicability in characterizing sea-state dynamics.
Ourania Altiparmaki   +6 more
doaj   +1 more source

A Novel Algorithm for Precise Orbit Determination Using a Single Satellite Laser Ranging System Within a Single Arc for Space Surveillance and Tracking

open access: yesAerospace
A satellite laser ranging (SLR) system uses lasers to measure the range from ground stations to space objects with millimeter-level precision. Recent advances in SLR systems have increased their use in space surveillance and tracking (SST).
Dong-Gu Kim, Sang-Young Park, Eunji Lee
doaj   +1 more source

A Robust Observation, Planning, and Control Pipeline for Autonomous Rendezvous with Tumbling Targets. [PDF]

open access: yesFront Robot AI, 2021
Albee K   +7 more
europepmc   +1 more source

Near-zero cohesion and loose packing of Bennu's near subsurface revealed by spacecraft contact. [PDF]

open access: yesSci Adv, 2022
Walsh KJ   +30 more
europepmc   +1 more source

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