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Articles tagged: retrograde orbit

  • Asteroid 2015 BZ509, Oumuamua, Pan-STARRS telescope, polar orbit, retrograde orbit 23 May 2018 First permanent extrasolar asteroid found near Jupiter

    ... same speed as the giant gas planet, but it does so in the opposite direction. This is called a retrograde orbit and although asteroids with retrograde orbits have been detected before, they are usually found only in the outer reaches of the...

    • Asteroid 2015 BZ509
    • Oumuamua
    • Pan-STARRS telescope
    • polar orbit
    • retrograde orbit
  • Artemis programme, Artemis-1, Orion spacecraft, Space Launch Systems (SLS) 25 October 2021 NASA is targeting Feb 2022 for first Artemis launch

    ... the lunar surface. The spacecraft will then use the flyby to assist in inserting itself into a Distant Retrograde Orbit (DRO) trajectory around the Moon where it will stay for at least six days for a “short class...

    • Artemis programme
    • Artemis-1
    • Orion spacecraft
    • Space Launch Systems (SLS)
  • icy moon, NASA Discovery Program, Trident, Triton 17 June 2020 NASA wants to visit Neptune’s weird moon Triton

    ... lasting impression on planetary scientists who were left puzzled over Triton’s many unusual features. In addition to the retrograde orbit and icy plumes – a feature which on other moons is thought to be caused by water from the interior being forced...

    • icy moon
    • NASA Discovery Program
    • Trident
    • Triton
  • Asteroid Redirect Mission, Michele Gates, NASA, solar electric propulsion December 2014 Asteroid Redirect Mission: preparing for Mars in deep space

    ... (over 100-metre diameter). With either option, substantial asteroid mass will be delivered to a stable lunar distant retrograde orbit (DRO). SEP offers the advantage of very high-efficiency propulsion in which engines operate at very low thrust...

    • Asteroid Redirect Mission
    • Michele Gates
    • NASA
    • solar electric propulsion
    Authors: Michele Gates    
  • Langley, mice, MICEHAB, microgravity, NASA January 2017 Mini space station for mice to study effects of reproduction in reduced gravity

    ... on the NASA Space Launch System (SLS) to a lunar distant retrograde orbit, a stable lunar orbit where the service module would place the spacecraft into the desired orbit. Once in orbit, a free-flying communications relay would separate from MICEHAB...

    • Langley
    • mice
    • MICEHAB
    • microgravity
    • NASA
    Authors: Dr Erica Rodgers     Dr Matthew Simon    
  • Lockheed Martin, mars, Mars Base Camp, NASA, Orion January 2017 Blueprint for NASA’s journey to Mars

    ...-lunar precursor mission architecture, this HEO may be a lunar distant retrograde orbit (L2 Halo Orbit) near rectilinear orbit, or simply a highly elliptical Earth orbit. A HEO orbit is chosen based on its relatively low departure delta velocity and...

    • Lockheed Martin
    • mars
    • Mars Base Camp
    • NASA
    • Orion
    Authors: Joshua W. Ehrlich     Robert P. Chambers     Scott D. Norris     Stephen A. Bailey     Steven D. Jolly     Timothy Cichan    

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