Results 71 to 80 of about 135,263 (156)

Analysis of Relative Motion of Collocated Geostationary Satellites with Geometric Constraints [PDF]

, 2013
This paper investigates the design of the relative motion orbits of geostationary satellites in the presence of geometric constraints. A geometric constraint is defined by a sensor's pointing direction and field of view.
de Bruijn, F.J., Gill, E.
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Predictions of the LSST Solar System Yield: Neptune Trojans

The Astronomical Journal
The NSF-DOE Vera C. Rubin Observatory’s Legacy Survey of Space and Time (LSST), beginning full operations in late 2025, will dramatically transform solar system science by vastly expanding discoveries and providing detailed characterization opportunities
Joseph Murtagh, Megan E. Schwamb, Pedro H. Bernardinelli, Hsing Wen Lin, Jacob A. Kurlander, Stephanie R. Merritt, Samuel Cornwall, Mario Jurić, Grigori Fedorets, Matthew J. Holman, Siegfried Eggl, R. Lynne Jones, Peter Yoachim, Joachim Moeyens, Jeremy Kubica, Drew Oldag, Maxine West, Colin Orion Chandler   +17 more
doaj   +1 more source

Triton’s Captured Youth: Tidal Heating Kept Triton Warm and Active for Billions of Years

The Planetary Science Journal
Neptune’s moon Triton has two remarkable attributes: its retrograde orbit suggests that it was captured from the Kuiper Belt, and Triton has one of the youngest surfaces of all the icy satellites in the solar system.
N. P. Hammond, G. C. Collins
doaj   +1 more source

Last giant impact on the Neptunian system: Constraints on oligarchic masses in the trans-Saturnian region [PDF]

, 2019
Context. Current models of the formation of ice giants attempt to account for the formation of Uranus and Neptune within the protoplanetary disk lifetime.Many of these models calculate the formation of Uranus and Neptune in a disk that may be several ...
Parisi, Mirta Gabriela, Valle, L. del
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TNOs are Cool: A Survey of the Trans-Neptunian Region: Radiometric properties of Trans-Neptunian Objects [PDF]

, 2010
The "TNOs are Cool: A Survey of the Trans-Neptunian Region" project is a Herschel Open Time Key Program awarded some 370 h of Herschel observing time. The observations include PACS and SPIRE point-source photometry on about 140 trans-Neptunian objects ...
Lara López, Luisa M., Dotto, Elisabetta, Gutiérrez Buenestado, Pedro, Mommert, Michael, Lim, Tanya L., Moreno, Raphael, Thomas, Nicolas, Rengel, Miriam, Groussin, Olivier, Barucci, Antonella, Doressoundiram, Alain, Dores-Soundiram, Alain, Hartogh, Paul, Lellouch, Emmanuel, Kidger, Mark, Kiss, Csaba, Duffard, René D., Gutiérrez Buenestado, P. J., Pal, Andras, Thirouin, Audrey, Harris, Alan W., Müller, Thomas G., Stansberry, John, Hainaut, Olivier, Mueller, Michael, Müller, Thomas, Duffard, René, Santos Sanz, Pablo, Lacerda, Pedro, Vilenius, Esa, Böhnhardt, Hermann, Guilbert, Aurelie, Trilling, David E., Lim, Tanya, Stansberry, John A., Bühnhardt, Hermann, Swinyard, Bruce, Hestroffer, Daniel, Delsanti, Audrey, Harris, Alan, Müller, Michael, Santos-Sanz, Pablo, Barucci, Maria Antonella, Crovisier, Jacques, Fornasier, Sonia, Trilling, David, Gutiérrez Buenestado, Pedro J., Jewitt, Dave, Kidger, Mark R., López, Luisa Lara, Thomas, Nicholas, Protopapa, Silvia, Henry, Florence, Ortiz Moreno, Jose Luis, Horner, Jonathan, Müller, G.   +55 more
core   +1 more source

Identification and dynamical characterization of all numbered asteroids in the von Zeipel-Lidov-Kozai resonance inside Jupiter’s orbit

Astronomy & Astrophysics
Context. The von Zeipel-Lidov-Kozai (ZLK) mechanism drives secular oscillations of the eccentricity and inclination that can reshape the orbital architecture of small bodies throughout the Solar System.
Smirnov Evgeny, Milić Žitnik Ivana
doaj   +1 more source

Last giant impact on the Neptunian System : constraints on oligarchic masses in the trans-Saturnian region [PDF]

, 2011
Context. Current models of the formation of ice giants attempt to account for the formation of Uranus and Neptune within the protoplanetary disk lifetime.
Parisi, Mirta Gabriela, M. G. Parisi, Valle, L. del, Valle, Luciano del, L. del Valle   +4 more
core   +1 more source

Beyond Point Masses. V. Weywot’s Non-Keplerian Orbit

The Planetary Science Journal
We present a detailed dynamical analysis of the Quaoar–Weywot system based on nearly 20 yr of high-precision astrometric data, including new Hubble Space Telescope observations and stellar occultations.
Benjamin Proudfoot, Will Grundy, Darin Ragozzine, Estela Fernández-Valenzuela   +3 more
doaj   +1 more source

Considering Contact Forces during the Formation of Planetesimals by Gravitational Collapse: Mutual Orbits, Spin States, and Shapes

The Astrophysical Journal
In this work, we apply a soft-sphere discrete element method (SSDEM) within the PKDGRAV N -body integrator to investigate the formation of planetesimal systems through the gravitational collapse of clouds of superparticles. Previously published numerical
Jackson T. Barnes, Stephen R. Schwartz, Seth A. Jacobson   +2 more
doaj   +1 more source

Products of neptunian eruptions

, 2009
A common pyroclastic facies in subaqueous volcanic successions comprises massive to graded, very thick (several to tens of meters), laterally extensive (several kilometers) beds of nonwelded pumice lapilli with volumes ranging to tens of cubic kilometers.
Jocelyn McPhie (14744104), Sharon Allen (14730253)   +1 more
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