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
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
CALCULATION AND MAPPING OF TIDAL LUNAR IMPACTS ON THE EARTH SPHEROID
InterCarto. InterGIS, 2017 The major method used in this study is processing of data arrays in order to obtain statistical data. Statistical methods of research use the parameter of frequency to characterize the recurrence of events in time and space.
O. V. Zenkin
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
SEA WAVE DIAGNOSTICS BY RADIO EMISSIONS FROM ARTIFICIAL EARTH SATELLITES IN DIFFERENT FREQUENCY BANDS [PDF]
Radio Physics and Radio AstronomySubject and Purpose. The present paper is concerned with sea wave diagnostics by signals from artificial satellites in a bistatic radar scheme using the grazing radio-wave propagation and a diffuse component of the signal reflected off the sea surface ...
V. B. Zamaraev +2 more
doaj +1 more source
Excluding Primordial Black Holes as Dark Matter Based on Solar System Ephemeris [PDF]
Research Notes of the AASCurrent cosmological constraints allow primordial black holes to constitute dark matter in the mass range of 1018–1022 g. I show that a major portion of this logarithmic window can be ruled-out based on the solar system ephemeris, given that the external
Abraham Loeb
semanticscholar +1 more source
Analysis of Solar and Lunar Motions in the Seonmyeong Calendar
Journal of Astronomy and Space Sciences, 2019 We investigate solar and lunar motions in the Seonmyeong (SM) calendar that was compiled by Xu, Ang of the Tang dynasty (A.D. 618-907) in China and used for 71 years from 822 to 892.
Ki-Won Lee
doaj +1 more source
Validation of Geostationary Earth Orbit Satellite Ephemeris Generated
Journal of Astronomy and Space Sciences, 2018 This study presents the generation and accuracy assessment of predicted orbital ephemeris based on satellite laser ranging (SLR) for geostationary Earth orbit (GEO) satellites.
Hyungjik Oh +5 more
doaj +1 more source
Sensors, 2020 At present, Global Position System (GPS) navigation ephemeris mainly broadcasts satellite orbits with meter-level precision for standard point positioning and precise relative positioning. With the rapid development of real-time precise point positioning
Dehai Li +5 more
doaj +1 more source
Constraint on the Yukawa suppression of the Newtonian potential from the planetary ephemeris INPOP19a [PDF]
, 2020 We use the latest solution of the ephemeris INPOP (19a) in order to improve our previous constraint on the existence of a Yukawa suppression to the Newtonian potential, generically associated to a graviton's mass.
L. Bernus +6 more
semanticscholar +1 more source