Results 41 to 50 of about 22,170 (245)

INPOP new release: INPOP13b [PDF]

open access: yes, 2015
Based on the use of MESSENGER radiotracking data in the construction of new Mercury ephemerides (Verma et al. 2014) a new planetary ephemerides INPOP13b was built including Mercury improvements but also improvements on the Mars orbit and on the tie of ...
Fienga, A.   +4 more
core  

INPOP08, a 4-D planetary ephemeris: From asteroid and time-scale computations to ESA Mars Express and Venus Express contributions

open access: yes, 2009
The latest version of the planetary ephemerides developed at the Paris Observatory and at the Besancon Observatory is presented here. INPOP08 is a 4-dimension ephemeris since it provides to users positions and velocities of planets and the relation ...
A. Fienga   +24 more
core   +3 more sources

Refining Exoplanet Ephemerides and Transit Observing Strategies [PDF]

open access: yes, 2009
Transiting planet discoveries have yielded a plethora of information regarding the internal structure and atmospheres of extra-solar planets. These discoveries have been restricted to the low-periastron distance regime due to the bias inherent in the ...
Ciardi, David R.   +4 more
core   +2 more sources

The fettered and the flea: a new poem by Edmund Waller☆

open access: yesRenaissance Studies, EarlyView.
Abstract This contribution explores for the first time a 22‐line poem in a British Library manuscript, ‘To a young lady that kept a flea chay'nd in a box’, which can be convincingly ascribed to Edmund Waller. Its most famous relative is Donne's ‘The Flea’, but its ancestry differs.
Stuart Gillespie
wiley   +1 more source

Accurate and Rapid Broadcast Ephemerides for Beidou-Maneuvered Satellites

open access: yesRemote Sensing, 2019
The geostationary earth orbit (GEO) and inclined geosynchronous orbit (IGSO) satellites of the Beidou navigation satellite system are maneuvered frequently. The broadcast ephemeris can be interrupted for several hours after the maneuver.
Jing Qiao   +3 more
doaj   +1 more source

Prediction of transits of solar system objects in Kepler/K2 images: An extension of the Virtual Observatory service SkyBoT

open access: yes, 2016
All the fields of the extended space mission Kepler/K2 are located within the ecliptic. Many solar system objects thus cross the K2 stellar masks on a regular basis.
Berthier, J.   +4 more
core   +3 more sources

Uncertainties in Historic Visual Double Star Measures—III Accurate Calibration Pairs

open access: yesAstronomische Nachrichten, Volume 346, Issue 10, December 2025.
ABSTRACT Based on space‐based positions and proper motions, we present accurate rectilinear elements for 857 double star pairs over the celestial sphere. These elements allow for the computation of precision ephemeris Position Angles and Separations of these pairs.
Roderick R. Letchford, Graeme L. White
wiley   +1 more source

Flight Altitude of Common Cranes (Grus grus) Crossing the Arkona Basin (Baltic Sea): Implications for Offshore Wind Farm Development

open access: yesEcology and Evolution, Volume 15, Issue 12, December 2025.
Study comprises the first field study of the flight altitude of the common crane (Grus grus) during seasonal migrations across the Baltic Sea. Our investigations clearly indicate that despite weather‐induced variations in the flight altitude, the majority of cranes will cross the Baltic Sea at altitudes between 50 and 250 m.
Henrik Skov   +6 more
wiley   +1 more source

Orbits of four double stars [PDF]

open access: yesSerbian Astronomical Journal, 2006
We present orbits of four double stars. Orbits of stars WDS 23516+4205 = ADS 17050 and WDS 18239+5848 = ADS 11336 were calculated for the first time. Orbits of double stars WDS 02022+3643 = ADS 1613 and WDS 18443+3940 = ADS 11635 were revised.
Novaković B., Todorović N.
doaj   +1 more source

Calculation of the Uncertainties in the Planetary Precessions with the Recent EPM2017 Ephemerides and their Use in Fundamental Physics and Beyond

open access: yes, 2019
I tentatively compile the formal uncertainties in the secular rates of change of the orbital elements $a,~e,~I,~\Omega$ and $\varpi$ of the planets of the solar system from the recently released formal errors in $a$ and the nonsingular elements $h,~k,~p$
Iorio, Lorenzo
core   +1 more source

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