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Hace 2 días · Structure. At its fullest extent (but excluding the scattered disc), including its outlying regions, the Kuiper belt stretches from roughly 30–55 AU. The main body of the belt is generally accepted to extend from the 2:3 mean-motion resonance ( see below) at 39.5 AU to the 1:2 resonance at roughly 48 AU. [44]
Hace 3 días · With orbital lifetimes short compared to the age of the Solar System, new asteroids must be constantly moved into near-Earth orbits to explain the observed asteroids. The accepted origin of these asteroids is that main-belt asteroids are moved into the inner Solar System through orbital resonances with Jupiter. [27]
Hace 3 días · On November 1, 2023, NASA’s Lucy spacecraft flew by the main-belt asteroid Dinkinesh. Now, the mission has released pictures from Lucy’s Long Range Reconnaissance Imager taken over a roughly three-hour period, providing the best views of the asteroid to date.
Hace 3 días · While all main-belt asteroids with a diameter above 10 km (6.2 mi) have already been discovered, there might be as many as 10 trillion 1 m (3.3 ft)-sized asteroids or larger out to the orbit of Jupiter; and more than a trillion minor planets in the Kuiper belt.
Hace 5 días · NASA missions allow astronomers to study binary asteroids. Astronomers are interested in when these systems were formed.
Hace 5 días · The default search behavior has changed. In v0.4.3 and earlier, the default id_type was 'smallbody'. With v0.4.4, the default is None, which implements JPL Horizons’s default behavior: search major bodies first, and if no major bodies are found, then search small bodies.
Hace 3 días · The Prudential Center in Newark plays host to a huge night of UFC action as Islam Makhachev puts his lightweight championship on the line against Dustin Poirier.
