Trojan

About: Trojan is a research topic. Over the lifetime, 2028 publications have been published within this topic receiving 33209 citations.

The Planar Motion of a Trojan Asteroid

Abstract: The planar motion of an asteroid in an orbit close to that of Jupiter is considered within the framework of the restricted circular three-body problem. The solution is derived asymptotically to second order using the two-variable expansion procedure for the case of small Jupiter-sun mass ratio. It is shown that the solution derived under the assumption of small Jupiter-sun mass ratio becomes singular for orbits that approach Jupiter. The nature of the singularity is exhibited as a guide for future work valid for this case. The results are given in explicit form for the coordinates as functions of time including both short and long periodic terms. Finally, the present solution is specialized to the family of long periodic Trojan orbits about the sun-Jupiter libration points.

If I Had a Million Cryptos: Cryptowallet Application Analysis and a Trojan Proof-of-Concept

Abstract: Cryptocurrencies have gained wide adoption by enthusiasts and investors. In this work, we examine seven different Android cryptowallet applications for forensic artifacts, but we also assess their security against tampering and reverse engineering. Some of the biggest benefits of cryptocurrency is its security and relative anonymity. For this reason it is vital that wallet applications share the same properties. Our work, however, indicates that this is not the case. Five of the seven applications we tested do not implement basic security measures against reverse engineering. Three of the applications stored sensitive information, like wallet private keys, insecurely and one was able to be decrypted with some effort. One of the applications did not require root access to retrieve the data. We were also able to implement a proof-of-concept trojan which exemplifies how a malicious actor may exploit the lack of security in these applications and exfiltrate user data and cryptocurrency.

(309239) 2007 RW10: a large temporary quasi-satellite of Neptune

Abstract: Context. Upon discovery, asteroid (309239) 2007 RW10 was considered a Neptune Trojan candidate. The object is currently listed by the Minor Planet Center as a Centaur but it is classified as a scattered disk or trans-Neptunian object by others. Now that its arc-length is 8154 d and has been observed for more than 20 yr, a more robust classification should be possible. Aims. Here we explore the orbital behaviour of this object in order to reveal its current dynamical status. Methods. We perform N -body simulations in both directions of time to investigate the evolution of its orbital elements. In particular, we study the librational properties of the mean longitude. Results. Its mean longitude currently librates around the value of the mean longitude of Neptune with an amplitude of nearly 50° and a period of about 7.5 kyr. Our calculations show that it has been in its present dynamical state for about 12.5 kyr and it will stay there for another 12.5 kyr. Therefore, its current state is relatively short-lived. Due to its chaotic behaviour, the object may have remained in the 1:1 mean motion resonance with Neptune for several 100 kyr at most, undergoing transitions between the various resonant states.Conclusions. (309239) 2007 RW10 is currently a quasi-satellite, the first object of this dynamical class to be discovered around Neptune. With a diameter of about 250 km, it is the largest known co-orbital in the solar system. Although it is not a Centaur now, it may become one in the future as it appears to move in an unstable region. Its significant eccentricity (0.30) and inclination (36°), strongly suggest that it did not form in situ but was captured, likely from beyond Neptune. With an apparent magnitude of 21.1 at opposition (October), it is well suited for spectroscopic observations that may provide information on its composition and hence eventually its origin.

9 Tales of the Trojan War: Achilles and Paris in Medieval Greek Literature

Abstract: This volume highlights the wealth of medieval storytelling and the fundamental unity of the medieval Mediterranean by combining in a comprehensive overview popular eastern tales along with their Greek adaptations and examining Byzantine love tales, both learned and vernacular, alongside their Persian counterparts and the later adaptations of Western romances.