|
Neptune Trojan
Neptune trojans are bodies that orbit the Sun near one of the stable Lagrangian points of Neptune, similar to the Trojan (astronomy), trojans of other planets. They therefore have approximately the same orbital period as Neptune and follow roughly the same orbital path. Twenty-eight Neptune trojans are currently known, of which 24 orbit near the Sun–Neptune Lagrangian point 60° ahead of Neptune and four orbit near Neptune's region 60° behind Neptune. The Neptune trojans are termed 'trojans' by analogy with the Jupiter trojans. The discovery of in a high-inclination (>25°) orbit was significant, because it suggested a "thick" cloud of trojans (Jupiter trojans have inclinations up to 40°), which is indicative of freeze-in capture instead of in situ or collisional formation. It is suspected that large (radius ≈ 100 km) Neptune trojans could outnumber Jupiter trojans by an order of magnitude. E. I. Chiang and Y. Lithwick ''Neptune Trojans as a Testbed for Planet Forma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Horseshoe Orbit
In celestial mechanics, a horseshoe orbit is a type of co-orbital configuration, co-orbital motion of a small orbiting body relative to a larger orbiting body. The osculating orbit, osculating (instantaneous) orbital period of the smaller body remains very near that of the larger body, and if its orbit is a little more eccentric than that of the larger body, during every period it appears to trace an ellipse around a point on the larger object's orbit. However, the loop is not closed but drifts forward or backward so that the point it circles will appear to move smoothly along the larger body's orbit over a long period of time. When the object approaches the larger body closely at either end of its trajectory, its apparent direction changes. Over an entire cycle the center traces the outline of a horseshoe, with the larger body between the 'horns'. Asteroids in horseshoe orbits with respect to Earth include 54509 YORP, , , and possibly . A broader definition includes 3753 Cruith ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clete (Amazon)
In Greek mythology, the Amazons (Ancient Greek: Ἀμαζόνες ''Amazónes'', singular Ἀμαζών ''Amazōn'', via Latin ''Amāzon, -ŏnis'') are portrayed in a number of ancient epic poems and legends, such as the Labours of Hercules, the ''Argonautica'' and the ''Iliad''. They were a group of female warriors and hunters, who beat men in physical agility and strength, in archery, riding skills, and the arts of combat. Their society was closed for men and they only raised their daughters, either killing their sons or returning them to their fathers, with whom they would only socialize briefly in order to reproduce. Courageous and fiercely independent, the Amazons, commanded by their queen, regularly undertook extensive military expeditions into the far corners of the world, from Scythia to Thrace, Asia Minor and the Aegean Islands, reaching as far as Arabia and Egypt. Besides military raids, the Amazons are also associated with the foundation of temples and the estab ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
385695 Clete
385695 Clete, provisional designation , is a Neptune trojan, co-orbital with the ice giant Neptune, approximately in diameter. It was named after Clete, one of the Amazons from Greek mythology. The minor planet was discovered on 8 October 2005, by American astronomers Scott Sheppard and Chad Trujillo at Las Campanas Observatory in Chile. 23 known Neptune trojans have already been discovered. Numbering and naming This minor planet was named from Greek mythology after Clete, a member of the Amazons, an all-female warrior tribe that fought in the Trojan War on the side of the Trojans against the Greek. Clete was one of the twelve followers of the Amazonian queen Penthesilea and went looking for her after she went missing during the war. According to the queen's will, Clete sailed to Italy and founded the city of Clete. The official was published by the Minor Planet Center on 18 May 2019 (). The naming follows the scheme already established with 385571 Otrera, which is to n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
_2010_SO16_orbit.gif "Click for more on -> Horseshoe Orbit")
