Collisional Disruption of Natural Satellites

Author(s):  
Paolo Farinella
Keyword(s):  



2007 ◽  
Vol 55 (14) ◽  
pp. 2037-2041 ◽  
Author(s):  
J. Warell ◽  
O. Karlsson
Keyword(s):  


Satellites ◽  
1986 ◽  
pp. 437-491
Author(s):  
ROGER N. CLARK ◽  
FRASER P. FANALE ◽  
MICHAEL J. GAFFEY


2018 ◽  
Vol 62 (12) ◽  
pp. 977-985
Author(s):  
N. V. Emelyanov
Keyword(s):  


1986 ◽  
Vol 91 ◽  
pp. 1238
Author(s):  
M. J. Longo ◽  
R. Morris
Keyword(s):  


2006 ◽  
Vol 2 (14) ◽  
pp. 616-616 ◽  
Author(s):  
William Thuillot ◽  
Jerôme Berthier ◽  
Armand Sarkissian ◽  
Areg M. Mickaelian ◽  
Lena A. Sargsyan ◽  
...  

Numerous new Solar System objects, mainly asteroids, are still detected nowadays but their physical and dynamical characteristics remain not accurately determined, until dedicated observations and analysis are made. However, the Virtual Observatory is a perfect framework to search for this characterization by data mining. We are developing two studies for this goal by exploring the DENIS infrared and DFBS spectroscopic surveys. In order to scan the survey catalogues and to search for Solar System objects, we have developed a VO compliant workflow founded on the use of a recent VO tool labelled SkyBoT (Sky Bodies Tracker) (Berthier et al. 2005) and on the VizieR service provided by CDS. A public version of SkyBoT is implemented in the sky atlas Aladin since January 2006. It allows us to quickly get the precise coordinates of the asteroids, planets and natural satellites in any star field, provided we know its center, its size and the precise date of the exposure (between 1949 and 2009). Our data mining workflow performs cone search queries on SkyBoT and VizieR to extract all the known astronomical objects observed by the survey. Then the sources which are detected in the survey are correlated with the known objects to determine the matched and unmatched objects.



2016 ◽  
Vol 457 (3) ◽  
pp. 2900-2907 ◽  
Author(s):  
D. Yan ◽  
R. C. Qiao ◽  
G. Dourneau ◽  
Y. Yu ◽  
H. Y. Zhang ◽  
...  
Keyword(s):  


2007 ◽  
Vol 16 (01) ◽  
pp. 11-17 ◽  
Author(s):  
LORENZO IORIO

In this paper we address the following question: do the recent advances in the orbit determination of the major natural satellites of Saturn obtained with the analysis of the first data sets from the Cassini spacecraft allow to detect the general relativistic gravitoelectric orbital precessions of the mean longitudes of such moons? The answer is still negative. The present-day down-track accuracy is adequate for Mimas, Enceladus, Thetys, Dione, Rhea and Titan and inadequate for Hyperion, Iapetus and Phoebe. Instead, the size of the systematic errors induced by the mismodeling in the key parameters of the Saturnian gravitational field like the even zonal harmonics Jℓ are larger than the relativistic down-track shifts by about one order of magnitude, mainly for the inner satellites like Mimas, Enceladus, Thetys, Dione, Rhea, Titan and Hyperion. Instead, Iapetus and Phoebe are not notably affected by such kind of perturbations. Moreover, the bias due to the uncertainty in Saturn's GM is larger than the relativistic down-track effects for all such moons up to two orders of magnitude (Phoebe). Thus, it would be impossible to separately analyze the mean longitudes of each satellite. Proposed linear combinations of the satellites' mean longitudes would allow to cancel out the impact of the mismodeling in the low-degree even zonal harmonics and GM, but the combined down-track errors would be larger than the combined relativistic signatures by a factor 103.



2008 ◽  
Vol 4 (T27A) ◽  
pp. 63-67
Author(s):  
William Thuillot ◽  
Magdalena Stavinschi ◽  
Alexander H. Andrei ◽  
Jean-Eudes Arlot ◽  
Marcelo Assafin ◽  
...  

At the IAU XXVI General Assembly in 2006, the Division I decided to create the Working Group on Astrometry by Small Ground-Based Telescopes (WG-ASGBT). Its scientic goals are to foster the follow-up of small bodies detected by the large surveys including the NEOs; to set-up a dedicated observation network for the follow-up of objects which will be detected by Gaia; to contribute to the observation campaigns of the mutual events of natural satellites, stellar occultations, and binary asteroids; and to encourage teaching astrometry for the next generation. The present report gives the main activities carried out in these areas with small telescopes (diameter less than 2m).



1978 ◽  
Vol 59 (2) ◽  
pp. 499-501 ◽  
Author(s):  
J. R. Donnison
Keyword(s):  


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