Results 1 to 10 of about 326 (246)
Accurate geometric albedo, shape, and size of Hi’iaka from a stellar occultation [PDF]
Nature CommunicationsStellar occultations, when a distant object passes in front of a star and casts a shadow on Earth, are a powerful tool to probe the physical properties of solar system bodies.
Estela Fernández-Valenzuela +73 more
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SORA: Stellar occultation reduction and analysis [PDF]
Monthly Notices of the Royal Astronomical Society, 2022 ABSTRACT The stellar occultation technique provides competitive accuracy in determining the sizes, shapes, astrometry, etc., of the occulting body, comparable to in-situ observations by spacecraft. With the increase in the number of known Solar system objects expected from the LSST, the highly precise astrometric catalogs, such as Gaia ...
A R Gomes-Júnior +8 more
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Stratospheric temperature measurements from nanosatellite stellar occultation observations of refractive bending [PDF]
Atmospheric Measurement Techniques, 2023 Stellar occultation observations from space can probe the stratosphere and mesosphere at a fine vertical scale around the globe. Unlike other measurement techniques like radiosondes and aircraft, stellar occultation has the potential to observe the ...
D. L. McGuffin +8 more
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Detecting Interstellar Objects through Stellar Occultations [PDF]
The Astrophysical Journal Letters, 2020 Abstract Stellar occultations have been used to search for Kuiper Belt and Oort Cloud objects. We propose a search for interstellar objects based on the characteristic durations (∼0.1 s) of their stellar occultation signals and high inclination relative to the ecliptic plane.
Amir Siraj, Abraham Loeb
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Research on Stellar Occultation Detection with Bandpass Filtering for Oxygen Density Retrieval
Remote Sensing, 2023 Stellar occultation instruments detect the transmission of stellar spectra through the planetary atmosphere to retrieve densities of various atmospheric components.
Zheng Li +6 more
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Retrieval of the Stratospheric Density by the Star Occultation
Aerospace, 2023 The navigation by the stellar refraction is important for a LEO (Low-Earth-Orbit) satellite, especially in a GNSS (Global Navigation Satellite System)-denied environment, since it is totally autonomous.
Kedong Wang, Zhennan Li, Shaoxiong Zhang
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Design and Simulation of Stellar Occultation Infrared Band Constellation
Remote Sensing, 2022 This study provides an in-depth analysis of the characteristics of stellar occultation events. Using 10 target star sources, the influence of orbital elements on the number, duration, and distribution of stellar occultation events was simulated and ...
Qinglin Zhu +3 more
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The Upper Atmosphere of Uranus from Stellar Occultations. I. Methods and Validation
The Planetary Science Journal, 2023 Measurements made by the Voyager 2 spacecraft during its flybys of Uranus in 1986 found warm stratospheric and hot thermospheric temperatures that cannot be explained by solar energy alone.
William R. Saunders +4 more
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Remote Sensing, 2022 In this study, we analyze the accuracy of the stellar occultation technique to detect the oxygen number density and temperature in near space. Based on the validation of the algorithm related to stellar occultation using a single wavelength of 762 nm ...
Mingchen Sun +5 more
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Terrestrial Atmospheric Composition from Stellar Occultations [PDF]
Science, 1972 Stellar ultraviolet light transmitted through the earth's upper atmosphere is strongly absorbed by ozone and molecular oxygen. The stellar ultraviolet photometers aboard the Orbiting Astronomical Observatory (OAO-2) satellite have measured the intensity changes of several stars during occultation of the star by the earth's atmosphere.
P B, Hays, R G, Roble, A N, Shah
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