Zobrazeno 1 - 10
of 26
pro vyhledávání: '"E. J. Christensen"'
Autor:
T. Santana-Ros, M. Micheli, L. Faggioli, R. Cennamo, M. Devogèle, A. Alvarez-Candal, D. Oszkiewicz, O. Ramírez, P.-Y. Liu, P. G. Benavidez, A. Campo Bagatin, E. J. Christensen, R. J. Wainscoat, R. Weryk, L. Fraga, C. Briceño, L. Conversi
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-11 (2022)
Although Trojan asteroids have been known for decades in other Solar System planets, only one Earth Trojan asteroid was detected. Here, the authors show that recently discovered 2020 XL5 is the second transient Earth Trojan asteroid.
Externí odkaz:
https://doaj.org/article/bdbbd3c2596e49a9bd28161b3cd03ec9
Autor:
C. W. Hergenrother, C. K. Maleszewski, M. C. Nolan, J.-Y. Li, C. Y. Drouet d’Aubigny, F. C. Shelly, E. S. Howell, T. R. Kareta, M. R. M. Izawa, M. A. Barucci, E. B. Bierhaus, H. Campins, S. R. Chesley, B. E. Clark, E. J. Christensen, D. N. DellaGiustina, S. Fornasier, D. R. Golish, C. M. Hartzell, B. Rizk, D. J. Scheeres, P. H. Smith, X.-D. Zou, D. S. Lauretta, The OSIRIS-REx Team
Publikováno v:
Nature Communications, Vol 10, Iss 1, Pp 1-10 (2019)
Vicinity of small bodies might be dangerous to the spacecrafts and to their instrumentation. Here the authors show the operational environment of asteroid Bennu, validate its photometric phase function and demonstrate the accelerating rotational rate
Externí odkaz:
https://doaj.org/article/e761134077dd4480a28b5fbe8144bf74
Extremely similar heliocentric orbital elements of the main-belt objects (458271) 2010 UM26 and 2010 RN221 make them the tightest known pair and promise its very young age. We analyzed the conditions of its origin and determined its age. We conducted
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::46933691fe027c8b3d6a1f64b4084b33
Publikováno v:
Acta Neurologica Scandinavica. 87:475-481
The cobalamin status was evaluated in Alzheimer dementia (n = 26), other dementias (n = 24), various gerontopsychiatric disorders (n = 25), and in neuro-psychiatrically healthy controls (n = 20). Supplementing serum cobalamin we measured methylmaloni
Publikováno v:
Acta Neurologica Scandinavica. 71:164-167
– 37 patients with diabetic neuropathy were randomized into 2 equal groups and given daily doses of 200 mg or 50 mg of Sorbinil® - a potent aldose-reductase inhibitor - in a double-blind 4-week period between 2 periods on placebo. The purpose was
Publikováno v:
Marine Geodesy. 18:25-37
An overview is given of the in situ measurement system installed on Texaco's Platform Harvest for verification of the sea level measurement from the TOPEX/Poseidon satellite. The prelaunch error budget suggested that the total root mean square (RMS)
Autor:
Bruce J. Haines, Pascal Willis, T. P. Yunck, S. M. Lichten, Yoaz Bar-Sever, E. J. Christensen, Ronald J. Muellerschoen, Yvonne Vigue, Willy Bertiger, S. C. Wu
Publikováno v:
Geophysical Research Letters. 21:541-544
The reduced dynamic Global Positioning System (GPS) tracking technique has been applied for the first time as part of the GPS experiment on TOPEX/Poseidon. This technique employs local geometric position corrections to reduce orbit errors caused by t
Autor:
Georges Balmino, Paul W. Chodas, B. G. Williams, William L. Sjogren, E. J. Christensen, Alex S. Konopliv, Nicole Borderies, Jean-Pierre Barriot
Publikováno v:
Geophysical Research Letters. 20:2403-2406
We have combined the most recent Pioneer Venus Orbiter (PVO) and Magellan (MGN) data with the earlier 1978-1982 PVO data set to obtain a new 60th degree and order spherical harmonic gravity model and a 120th degree and order spherical harmonic topogr
Publikováno v:
GPS Trends in Precise Terrestrial, Airborne, and Spaceborne Applications ISBN: 9783540608721
Satellite altimetry is faced with the challenge of measuring subtle variations in the dynamic topography of the world’s oceans with cm-level accuracy. The TOPEX/Poseidon (T/P) mission was designed to resolve these signals by measuring the radial co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c0064c473448f28873095d28c2206f31
https://doi.org/10.1007/978-3-642-80133-4_21
https://doi.org/10.1007/978-3-642-80133-4_21
Autor:
Pascal Willis, S. M. Lichten, Timothy N. Munson, E. J. Christensen, J. R. Jee, Joseph R. Guinn, Ronald J. Muellerschoen, Yvonne Vigue, Hyung-Jin Rim, William G. Melbourne, Bruce J. Haines, Bob E. Schutz, Yoaz Bar-Sever, R. W. Ibanez-Meier, T. P. Yunck, Michael M. Watkins, S. C. Wu, P. A. M. Abusali, Willy Bertiger, E. S. Davis
Publikováno v:
Journal of Geophysical Research. 99:24449
A reduced dynamic filtering strategy that exploits the unique geometric strength of the Global Positioning System(GPS) to minimize the effects of force model errors has yielded orbit solutions for TOPEX/POSEIDON which appear accurate to better than 3