Results 111 to 120 of about 788,278 (206)

Stellar Occultations by Trans-Neptunian Object Satellites: Predictions and Observations

The Planetary Science Journal
With the great success of stellar occultations in probing trans-Neptunian objects (TNOs), these observations have become ubiquitous, leading to significant advances in our knowledge of TNOs. As stellar occultation predictions have improved, it has become
Flavia L. Rommel, Benjamin Proudfoot, José L. Ortiz, Nicolás Morales, José María Gómez-Limón, Bryan J. Holler, Darin Ragozzine, Toni Santana-Ros, Pablo Santos-Sanz, Estela Fernández-Valenzuela, Francisco J. Aceituno   +10 more
doaj   +1 more source

The NEID Earth Twin Survey. II. Dynamical Masses in Seven High-acceleration Star Systems

The Astronomical Journal
We present a set of companion dynamical masses and orbital parameters of seven star systems from the NEID Earth Twin Survey with significant absolute astrometric accelerations between the epochs of Hipparcos and Gaia.
Mark R. Giovinazzi, Cullen H. Blake, Paul Robertson, Andrea S. J. Lin, Arvind F. Gupta, Suvrath Mahadevan, Jason T. Wright, Daniella Bardalez Gagliuffi, Jiayin Dong, Rachel B. Fernandes, Evan Fitzmaurice, Samuel Halverson, Shubham Kanodia, Sarah E. Logsdon, Jacob K. Luhn, Michael W. McElwain, Andy Monson, Joe P. Ninan, Jayadev Rajagopal, Arpita Roy, Christian Schwab, Gudmundur Stefánsson, Ryan Terrien, Jason D. Eastman, Jonathan Horner, Peter Plavchan, Sharon X. Wang, Maurice L. Wilson, Robert A. Wittenmyer   +28 more
doaj   +1 more source

Asteroid ephemerides. Final report to ESA contract 22885/09/F/MOS/100409-R

, 2011
Asteroid ephemerides. Final report to ESA contract 22885/09/F/MOS/100409-
Hestroffer, Daniel, Desmars, J., Bancelin, David, Thuillot, William   +3 more
core   +1 more source

A New Approach to Compiling Exoatmospheric Target Lists and Quantifying the Ground-based Resources Needed to Vet Them

The Astronomical Journal
Transiting exoplanet atmospheric characterization is currently in a golden age as dozens of exoplanet atmospheres are being studied by NASA’s Hubble and James Webb Space Telescopes.
Jennifer A. Burt, Robert T. Zellem, David R. Ciardi, Shubham Kanodia, Geoffrey Bryden, Tiffany Kataria, Kyle A. Pearson, Jessie L. Christiansen, Charles Beichman, B. J. Fulton, Mark Swain   +10 more
doaj   +1 more source

Atmospheric density estimation using satellite precision orbit ephemerides

, 2011
The current atmospheric density models are not capable enough to accurately model the atmospheric density, which varies continuously in the upper atmosphere mainly due to the changes in solar and geomagnetic activity. Inaccurate atmospheric modeling results in erroneous density values that are not accurate enough to calculate the drag estimates acting ...
openaire   +1 more source

Assisted Snapshot GNSS Position, Navigation, and Timing for LEO Satellites. [PDF]

Sensors (Basel)
Kim S, Holmes T, Schmitz T, Wardall G, Akos D.   +4 more
europepmc   +1 more source

The Implementation of Precise Point Positioning (PPP): A Comprehensive Review. [PDF]

Sensors (Basel), 2023
Elsheikh M, Iqbal U, Noureldin A, Korenberg M.   +3 more
europepmc   +1 more source

RTK and PPK GNSS Positioning Accuracy Assessment for UAVs Using a PPS-Synchronized Robotic Total Station. [PDF]

Sensors (Basel)
Beni A, Bigazzi L, Miccinesi L, Cioncolini A, Bulletti A, Pagnini L, Boni E, Pieraccini M.   +7 more
europepmc   +1 more source

Remote Performance Evaluation of High-Precision Timekeeping Systems Based on BDS Real-Time PPP. [PDF]

Sensors (Basel)
Yang X, Zhang X, Wu J, Guo J.
europepmc   +1 more source

BDSet: A First-ever BDS Satellite-based PPP Augmentation Dataset Since 2023. [PDF]

Sci Data
Ouyang C, Shi J, Hou C, Peng W, Guo J, Yao Y.   +5 more
europepmc   +1 more source