Results 41 to 50 of about 1,669 (216)
Consequences of asteroid fragmentation during impact hazard mitigation
, 2009 The consequences of the fragmentation of an Earth-threatening asteroid due to an attempted deflection are examined in this paper. The minimum required energy for a successful impulsive deflection of a threatening object is computed and compared to the ...
Vasile, M. +9 more
core +1 more source
Photometry and shape modeling of Mars crosser asteroid (1011) Laodamia [PDF]
Serbian Astronomical Journal, 2014 An analysis of photometric observations of Mars crosser asteroid 1011 Laodamia conducted at Bulgarian National Astronomical Observatory Rozhen over a twelve year interval (2002, 2003, 2004, 2006, 2007, 2008, 2011, 2012 and 2013) is made.
Apostolovska G. +5 more
doaj +1 more source
Lightcurve analysis and rotation period determination of Asteroid 1466 Mundleria [PDF]
, 2022 Photometric observations of asteroid 1466 Mundleria were conducted using telescopes located in New Mexico, Italy and Malta between 2022 Mar 4 and Apr 25.
Papini, Riccardo +16 more
core
The shape and rotation of the tumbling asteroid (99942) Apophis [PDF]
, 2014 Photometric observations of the asteroid (99942) Apophis taken from December 2012 to April 2013 revealed that it is in a non-principal axis rotation state. We constructed a numerical model of the asteroid's shape and rotation.
Durech, J. +23 more
core +1 more source
INVESTIGATION OF NEO ASTEROIDS 2006 VB14 AND 1986 DA
Odessa Astronomical Publications, 2019 566 positions and photometric observa- tions of NEO objects 2006 VB14 = Y5705 = 345705 and 1986 DA were obtained with Baldone Schmidt telescope in 2018 and 2019, to detecting rotation period and other physical characteristics.
I. Eglitis
doaj +1 more source
The feasibility of using an L1 positioned dust cloud as a method of space-based geoengineering
, 2012 In this paper a method of geoengineering is proposed involving clouds of dust placed in the vicinity of the L1 point as an alternative to the use of thin film reflectors.
Bewick, Russell +5 more
core +1 more source
Dynamics of asteroid systems post-rotational fission
Astronomy & Astrophysics, 2022 Asteroid binaries found among the near-Earth objects are believed to have formed from rotational fission. In this paper, we study the dynamical evolution of asteroid systems the moment after fission. The model considers two bodies the moment after a contact binary separates due to rotational fission.
Alex Ho +3 more
openaire +3 more sources
Embryonic development of the Mediterranean starfish Hacelia attenuata
Developmental Dynamics, EarlyView.Abstract Background Starfish play essential ecological roles as predators and ecosystem regulators; however, detailed developmental descriptions exist for only a handful of species, none of which are from the Mediterranean Sea. Results In this study, we provide the first full account of the development of the Mediterranean starfish Hacelia attenuata ...
Silvia Caballero‐Mancebo +3 more
wiley +1 more source
Rotation periods and shape asphericity in asteroid families based on TESS S1-S13 observations [PDF]
, 2022 Here we present the analysis of the distribution of rotation periods and light curve amplitudes based on 2859 family asteroids in 16 Main Belt families based on 9912 TESS asteroid light curves in the TSSYS-DR1 asteroid light curve database. We found that
Szabó, Gyula M. +35 more
core +1 more source
Scaling slowly rotating asteroids with stellar occultations
Astronomy & Astrophysics, 2023 Context. As evidenced by recent survey results, the majority of asteroids are slow rotators (spin periods longer than 12 h), but lack spin and shape models because of selection bias. This bias is skewing our overall understanding of the spins, shapes, and sizes of asteroids, as well as of their other properties. Also, diameter determinations for large (
A. Marciniak +178 more
openaire +3 more sources