Results 21 to 30 of about 41,139 (300)
Signal in Space Error and Ephemeris Validity Time Evaluation of Milena and Doresa Galileo Satellites
Sensors, 2019 In August 2016, Milena (E14) and Doresa (E18) satellites started to broadcast ephemeris in navigation message for testing purposes. If these satellites could be used, an improvement in the position accuracy would be achieved.
Umberto Robustelli +2 more
doaj +2 more sources
Elements and Ephemeris of the Euterpe [PDF]
Astronomische Nachrichtenn ...
Temple Chevallier
openalex +5 more sources
Original Research by Young Twinkle Students (ORBYTS): ephemeris refinement of transiting exoplanets [PDF]
Monthly notices of the Royal Astronomical Society, 2020 We report follow-up observations of transiting exoplanets that have either large uncertainties (>10 min) in their transit times or have not been observed for over 3 yr.
B. Edwards +62 more
semanticscholar +1 more source
Development of Kinematic Ephemeris Generator for Korea Pathfinder Lunar Orbiter (KPLO)
Journal of Astronomy and Space Sciences, 2020 This paper presents a kinematic ephemeris generator for Korea Pathfinder Lunar Orbiter (KPLO) and its performance test results. The kinematic ephemeris generator consists of a ground ephemeris compressor and an onboard ephemeris calculator.
Min-Sup Song +3 more
doaj +1 more source
TraMoS: V. Updated ephemeris and multi-epoch monitoring of the hot Jupiters WASP-18Ab, WASP-19b, and WASP-77Ab [PDF]
, 2020 We present 22 new transit observations of the exoplanets WASP-18Ab, WASP-19b, and WASP-77Ab, from the Transit Monitoring in the South (TraMoS) project. We simultaneously model our newly collected transit light curves with archival photometry and radial ...
P. Cortés-Zuleta +7 more
semanticscholar +1 more source
Ephemeris of variables of the Algol-type
The Astronomical Journal, 1895 Paul S. Yendell
openalex +3 more sources
Effect of Ephemeris on Pulsar Timing and Navigation Accuracy Based on X-ray Pulsar Navigation-I Data
Universe, 2022 Solar system ephemeris is very important for pulsar timing and navigation. In order to explore the effect of different precision ephemerides on X-ray pulsar timing and navigation, the differences between timing and navigation results with four JPL ...
Yongtao Deng, Shuanggen Jin
doaj +1 more source
New Data on the Eclipsing Binary V1848 Ori and Improved Orbital and Light Curve Solutions
Open Astronomy, 2020 New observations of the eclipsing binary system V1848 Ori were carried out using the V filter resulting in a determination of new times of minima and new ephemeris were obtained.
Davoudi Fatemeh +13 more
doaj +1 more source