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Sedna (minor-planet designation: 90377 Sedna) is a dwarf planet in the outermost reaches of the Solar System, orbiting the Sun beyond the orbit of Neptune. Discovered in 2003, the planetoid's surface is one of the reddest known among Solar System bodies.
Sedna (10 cm (3.9 in) in diameter), another dwarf planet candidate, is located at Teknikens Hus, a science center in Luleå, 734 km (456 mi) from the Globe. This represents a distance of about 15 billion km; Sedna has a highly elliptical orbit, its distance from the Sun varying between 11 and 140 billion km.
As of 2019, the object is inbound 78 AU from the Sun; [9] about two-and-a-half times farther out than Pluto's current location. [13] It will come to perihelion (closest approach to the Sun) in 2078. [4] As with Sedna, it would not have been found had it not been on the inner leg of its long orbit.
Legend of orbits: Sedna (red), Jupiter (orange), Saturn (yellow), Uranus (green), Neptune (blue), and Pluto (purple) Russian Орбита карликовой планеты-кандидата 90377 Седна (красный) по сравнению с внешними планетами и Плутоном, без подписи.
Sedna may refer to: Sedna (mythology), the Inuit goddess of the sea; Sedna (dwarf planet), a trans-Neptunian dwarf planet; Sedna (beverage), a tonic wine, formerly made in Belfast; Sedna (database), a native XML database; Doriprismatica sedna, a species of nudibranch; Sedna Finance, a structured investment vehicle; Sedna Planitia, a landform on ...
Satellite image of Europe by night 1916 physical map of Europe Topography of Europe. Some geographical texts refer to a Eurasian continent given that Europe is not surrounded by sea and its southeastern border has always been variously defined for centuries. In terms of shape, Europe is a collection of connected peninsulas and nearby
Below is a list of European countries and dependencies by area in Europe. [1] As a continent, Europe's total geographical area is about 10 million square kilometres. [2] Transcontinental countries are ranked according to the size of their European part only, excluding Greece due to the not clearly defined boundaries of its islands between ...
La grande traversée (English: The Great Adventure; also: Voyage of the Sedna (US); [8] The Great Crossing) [4] is a 2003 Canada-France short documentary film written and directed by Jean Lemire and Thierry Piantanida, [2] [3] as well as co-produced and co-narrated by Jean Lemire, [1] made to foster awareness of global warming as seriously jeopardizing a fragile Arctic ecosystem, the first ...