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See searches and references containing DISTANT RETROGRADE-ORBIT!DISTANT RETROGRADE-ORBIT
Type of spacecraft orbit
In orbital mechanics, a distant retrograde orbit (DRO) is a highly stable retrograde orbit around the smaller of two bodies, passing outside the system's
Distant_retrograde_orbit
Relative directions of orbit or rotation
Retrograde motion in astronomy is, in general, orbital or rotational motion of an object in the direction opposite the rotation of its primary, that is
Retrograde and prograde motion
Retrograde_and_prograde_motion
lunar south pole. Distant retrograde orbit (DRO): A stable circular retrograde orbit (usually referring to Lunar Distant Retrograde Orbit). Stability means
List_of_orbits
2022 uncrewed Moon-orbiting NASA mission
Orion completed one flyby of the Moon on November 21, entered a distant retrograde orbit for six days, and completed a second flyby of the Moon on December
Artemis_I
Apparent backward motion of a planet
more distant planets retrograde more frequently, as they do not move as much in their orbits while Earth completes an orbit itself. The retrograde motion
Apparent_retrograde_motion
Type of satellite in sync with another orbit
appear to travel in an oblong retrograde loop around the planet. . In contrast to true satellites, quasi-satellite orbits lie outside the planet's Hill
Quasi-satellite
Orbit of an object around the Moon
stable orbits in the lunar vicinity, such as halo orbits and distant retrograde orbits. Some halo orbits remain over particular regions of the lunar surface
Lunar_orbit
Angle between a reference plane and the plane of an orbit
than 90° and less than 180° is a retrograde orbit. An inclination of exactly 180° is a retrograde equatorial orbit. For impact-generated moons of terrestrial
Orbital_inclination
Primary power and propulsion component of the Orion spacecraft
ESM placed the spacecraft into distant retrograde orbit around the Moon, and subsequently extracted it from that orbit and sent it back to Earth. The
European_Service_Module
extraterrestrial orbiters is a listing of spacecraft that achieved an extraterrestrial orbit. The first artificial object to orbit the sun is the Luna
List of extraterrestrial orbiters
List_of_extraterrestrial_orbiters
Trajectory of Earth around the Sun
Earth's gravitational influence is stronger than the more distant Sun and planets. Objects orbiting the Earth must be within this radius, otherwise, they
Earth's_orbit
Type of orbit around an astronomical body
near-equatorial orbit is an orbit that lies close to the equatorial plane of the primary body orbited. Such an orbit has an inclination near 0°. Such orbits lie near
Near-equatorial_orbit
Natural satellites of the planet Jupiter
these was Valetudo, which has an unusually distant prograde orbit that crosses paths with the retrograde irregular moons. Several more unidentified Jovian
Moons_of_Jupiter
1972–2011 United States human spaceflight program
capsule spent 10 days in a 57,000-kilometer (31,000-nautical-mile) distant retrograde orbit around the Moon before returning to Earth. Artemis II, the first
Space_Shuttle_program
American space and aeronautics agency
Launch System (SLS) that would also send an Orion spacecraft on a Distant Retrograde Orbit. The first step toward returning astronauts to the Moon, Artemis
NASA
Trans-Neptunian object on a retrograde polar orbit
trans-Neptunian object and the first one with a retrograde orbit to be discovered. This retrograde motion with an orbital inclination of 103° suggests that it is
(528219)_2008_KV42
Technology development overview
two orbiting bodies Three-body problem – Physics problem related to laws of motion and gravity Distant retrograde orbits Distant retrograde orbit – Type
Outline of artificial satellites
Outline_of_artificial_satellites
Type of co-orbital motion of a small orbiting body relative to a larger orbiting body
horseshoe orbits and quasi-satellite orbits. Quasi-satellites aren't gravitationally bound to their planet, but appear to circle it in a retrograde direction
Horseshoe_orbit
Orbit around the barycenter of the Sun
('heliocentric' in a strict sense). The outer planets, and other more distant objects, tend to orbit points close to the barycenter of the Solar System, which is
Heliocentric_orbit
Moon of Saturn
its insertion into orbit, Cassini did not go much beyond the orbit of Iapetus. Phoebe has a moderately eccentric, retrograde orbit, making it part of
Phoebe_(moon)
Topics referred to by the same term
measuring instrument used in machinery and metalworking Distant retrograde orbit, a highly stable lunar orbit Dro, slang for hydroponically-grown marijuana Dynamic
Dro
Planned Chinese lunar exploration mission
to the Moon "The Space Review: What is China doing at the lunar distant retrograde orbit?". www.thespacereview.com. Retrieved 2022-04-12. Zou, Yongliao;
Chang'e_7
Largest moon of Neptune
its own gravity and hosts a thin, hazy atmosphere. Triton orbits Neptune in a retrograde orbit—revolving in the opposite direction to the parent planet's
Triton_(moon)
Transfer manoeuvre between two orbits
astronautics, the Hohmann transfer orbit (/ˈhoʊmən/) is an orbital maneuver used to transfer a spacecraft between two orbits of different altitudes around
Hohmann_transfer_orbit
Type of geocentric orbit
retrograde compared to the direction of Earth's rotation: 0° represents an equatorial orbit, and 90° represents a polar orbit. Sun-synchronous orbits
Sun-synchronous_orbit
Return of a spacecraft under gravity
Earth. Spaceflight portal Gravity turn in orbital redirection Patched conic approximation Distant retrograde orbit These trajectories are shown in an inertial
Free-return_trajectory
Disked object that eclipsed V1400 Centauri
disk must orbit J1407b in retrograde motion, opposite to the direction J1407b orbits its host star. A retrograde-orbiting disk would survive longer against
J1407b
Orbit keeping the satellite at a fixed longitude above the equator
A geosynchronous orbit (sometimes abbreviated GEO) is an Earth-centered orbit with an orbital period that matches Earth's rotation on its axis, 23 hours
Geosynchronous_orbit
first lunar orbiter Danuri was launched into space by a Falcon 9 rocket. The orbiter took several months to enter lunar orbit; lunar orbit insertion happened
2022_in_spaceflight
Retrograde asteroid discovered in 2014
in diameter, in a resonant, co-orbital motion with Jupiter. It is an unusual minor planet in that its orbit is retrograde, which is opposite to the direction
514107_Kaʻepaokaʻāwela
Satellite orbit with high inclination
retrograde apsidal precession of the brown dwarf pair, which could not be explained by the outer companion. List of orbits Molniya orbit Tundra orbit
Polar_orbit
Path on the surface of the Earth or another body directly below an aircraft or satellite
orbital inclination between 90° and 180° (or, equivalently, between 0° and −90°) is said to be in a retrograde orbit. A satellite in a direct orbit with
Satellite_ground_track
Parameters that define a specific orbit
inclinations near 90° indicate polar orbits. Inclinations from 90 to 180° are typically used to denote retrograde orbits. Longitude of the ascending node
Orbital_elements
Hypothetical Solar System planet
and their orbits are similarly tilted. These alignments suggest that an undiscovered planet may be shepherding the orbits of the most distant known Solar
Planet_Nine
Centaur and damocloid
20461 Dioretsa /daɪ.əˈrɛtsə/ is a centaur and damocloid on a retrograde, cometary-like orbit from the outer Solar System. It was discovered on 8 June 1999
20461_Dioretsa
Sixth planet from the Sun
first such satellite found and it took more than a year to orbit Saturn in a retrograde orbit. During the early 20th century, research on Titan led to the
Saturn
Field of classical mechanics concerned with the motion of spacecraft
behavior. The spacecraft would approach Mars on a hyperbolic orbit, and a final retrograde burn would slow the spacecraft enough to be captured by Mars
Orbital_mechanics
The Moon's circuit around Earth
The orbit of the Moon is, while stable and known, highly complex, and as such still studied by lunar theory. Most models describe the Moon's orbit geocentrically
Orbit_of_the_Moon
spacecrafts, DRO-A and DRO-B, into distant retrograde orbit around the Moon, but the mission failed to reach the strived for orbit, remaining stranded in a highly
2024_in_spaceflight
Irregular moon of Uranus
Caliban follows a distant orbit, more than 10 times further from Uranus than Oberon, the outermost regular moon. Its orbit is retrograde, moderately inclined
Caliban_(moon)
Natural satellites of the planet Saturn
surface ice. Irregular moons are small satellites with distant, inclined, and frequently retrograde orbits, believed to have been acquired by the parent planet
Moons_of_Saturn
Orbit around Earth between 160 and 2000 km
A low Earth orbit (LEO) is an orbit around Earth with a period of 128 minutes or less (making at least 11.25 orbits per day) and an eccentricity less
Low_Earth_orbit
Artemis program crewed spacecraft
ESM placed the spacecraft into distant retrograde orbit around the Moon, and subsequently extracted it from that orbit and sent it back to Earth. The
Orion_(spacecraft)
2013–2017 proposed NASA space mission
demonstrated capabilities past Earth orbit, yet within a few days' return contingency. Lunar Distant Retrograde Orbit (DRO) encompassing Earth-Moon L1 and
Asteroid_Redirect_Mission
surface, followed later that year by Luna 10, the first spacecraft to enter orbit around the Moon. In 1968, the Zond 5 mission became the first to carry terrestrial
List_of_missions_to_the_Moon
Chinese lunar exploration mission
September 2021. In January 2022, CE-5 left the L1 point for the lunar distant retrograde orbit (DRO) to conduct very-long-baseline interferometry tests in preparation
Chang'e_5
1984 American crewed spaceflight to deploy the Earth Radiation Budget Satellite
and velocity, including bringing the capsule into and out of a Distant Retrograde Orbit around the Moon. The thirteen complete stars in the blue field
STS-41-G
Spacecraft end-of-life orbit
graveyard orbit, also called a junk orbit or disposal orbit, is an orbit that lies away from common operational orbits. One significant graveyard orbit is a
Graveyard_orbit
Natural satellites of the planet Uranus
all have prograde orbits and are cumulatively classified as regular moons. In contrast, the orbits of the irregular moons are distant, highly inclined
Moons_of_Uranus
Irregular moon of Uranus
Observatory, Chile, and later announced on 23 February 2024. It orbits Uranus in the retrograde direction at an average distance of about 8 million km (5 million mi)
S/2023_U_1
Natural satellites of the planet Neptune
that its orbit is retrograde to Neptune's rotation and inclined relative to Neptune's equator, which suggests that it did not form in orbit around Neptune
Moons_of_Neptune
Regular and periodic mutual gravitational influence of orbiting bodies
they approach perihelion and Neptune's orbit, Neptune is consistently distant (averaging a quarter of its orbit away). Other (much more numerous) Neptune-crossing
Orbital_resonance
Trans-Neptunian object
due to its eccentric orbit with a low perihelion of 8.7 AU and a higher-than-90°-inclination, which gives it a retrograde orbit. There are only about
(468861)_2013_LU28
Outermost moon of Neptune
Pasiphae groups orbit at a greater percentage of their primary's Hill radius. S/2021 N 1 is part of the Neso group, a cluster of distant retrograde irregular
S/2021_N_1
injection orbit because of a failure of the YZ-1A upper stage. The satellites however were able to reach their intended Distant Retrograde Orbit around the
List_of_Long_March_launches
Periodic comet
roughly the orbital distance of Pluto. Unlike the overwhelming majority of objects in the Solar System, Halley's orbit is retrograde; it orbits the Sun in
Halley's_Comet
Complex type of orbit
Rosetta orbit is a complex type of orbit. In astronomy, a Rosetta orbit occurs when there is a periastron shift during each orbital cycle. A retrograde Newtonian
Rosetta_orbit
Curved path of an object around a point
eccentricity, but not the orbital period (to first order). A prograde or retrograde transverse impulse (i.e. an impulse applied along the orbital motion) changes
Orbit
This is a list of robotic space probes that have flown by, struck, orbited, landed on, or failed to reach the Moon for lunar exploration. The crewed Apollo
List_of_lunar_probes
Circular orbit above Earth's Equator and following the direction of Earth's rotation
A geostationary orbit, also referred to as a GEO or GSO, is a circular geosynchronous orbit 35,786 km (22,236 mi) in altitude above Earth's equator, 42
Geostationary_orbit
Natural phenomenon due to which tidal locking occurs
for satellites that have an orbital period that is shorter than the primary's rotational period, or that orbit in a retrograde direction. These satellites
Tidal_acceleration
Planetary system consisting of the Sun and objects orbiting it
in the opposite, retrograde manner. Most larger objects rotate around their own axes in the prograde direction relative to their orbit, though the rotation
Solar_System
Periodic, three-dimensional orbit
Halo orbit A halo orbit is a periodic, non-planar orbit associated with one of the L1, L2 or L3 Lagrange points in the three-body problem of orbital mechanics
Halo_orbit
Fifth planet from the Sun
through the perihelion of its orbit, bringing it closer to Earth. Near opposition, Jupiter will appear to go into retrograde motion for a period of about
Jupiter
Irregular moon of Neptune
follows a distant, highly eccentric, and highly inclined orbit around the planet. Like the majority of irregular moons, Neso's orbit is retrograde, meaning
Neso_(moon)
Centaur
The object is on a retrograde orbit as it has an inclination of more than 90°. There are only about a hundred known retrograde minor planets out of
2011_MM4
Irregular moon of Uranus
on the Hale Telescope in California. Sycorax's orbit is retrograde, irregular, and much more distant than that of Oberon, the furthest of Uranus's regular
Sycorax_(moon)
Centaur
The object is on a retrograde orbit as it has an inclination of more than 90°. There are only about a hundred known retrograde minor planets out of
(342842)_2008_YB3
Trans-Neptunian object on a retrograde polar orbit
trans-Neptunian object whose orbit is tilted 110° with respect to the ecliptic. Thus, it has a nearly polar retrograde orbit around the Sun from the reference
471325_Taowu
Hypothetical planets further than Neptune
highly inclined orbit at some 1,500 AU. In 2016, further work showed this unknown distant planet is likely to be on an inclined, eccentric orbit that goes no
Planets_beyond_Neptune
Geocentric orbit with an altitude entirely above that of a geosynchronous orbit
A high Earth orbit is a geocentric orbit with an apogee farther than that of the geosynchronous orbit, which is 35,786 km (22,236 mi) away from Earth.
High_Earth_orbit
Quasi-periodic orbital trajectory
trajectory In orbital mechanics, a Lissajous orbit (pronounced [li.sa.ʒu]), named after Jules Antoine Lissajous, is a quasi-periodic orbital trajectory that
Lissajous_orbit
Speed at which a body orbits around the barycenter of a system
the orbital speed of an astronomical body or object (e.g. planet, moon, artificial satellite, spacecraft, or star) is the speed at which it orbits around
Orbital_speed
Spaceflight with a crew or passengers
with Artemis I in 2022, sending an uncrewed Orion spacecraft to a distant retrograde orbit around the Moon and returning it to Earth after a 25-day mission
Human_spaceflight
Orbit around Earth
A geocentric orbit, Earth-centered orbit, or Earth orbit involves any object orbiting Earth, such as the Moon or artificial satellites. In 1997, NASA estimated
Geocentric_orbit
Earth-centered orbit above low Earth orbit and below geostationary orbit
A medium Earth orbit (MEO) is an Earth-centered orbit with an altitude above a low Earth orbit (LEO) and below a high Earth orbit (HEO) – between 2,000
Medium_Earth_orbit
Eighth planet from the Sun
the sky because it had just turned retrograde that day. This apparent backward motion is created when Earth's orbit takes it past an outer planet. Because
Neptune
China attempted to launch two spacecrafts, DRO-A and DRO-B, into distant retrograde orbit around the Moon. As an independent project, the mission was managed
History of the Chinese space program
History_of_the_Chinese_space_program
Series of orbital maneuvers
(/ˈrɒndeɪvuː/) is a set of orbital maneuvers during which two spacecraft, one of which is often a space station, arrive at the same orbit and approach to a very
Space_rendezvous
European spacecraft
fly to a Distant Retrograde Orbit (DRO) of the Sun-Earth system, an orbit similar to but more elliptical than that of the Earth. In this orbit, it will
HENON
to the plane of their equators, and irregular moons, whose orbits can be pro- or retrograde (against the direction of their planets' rotation) and often
List_of_natural_satellites
Celestial orbit whose trajectory is a conic section in the orbital plane
In celestial mechanics, a Kepler orbit (or Keplerian orbit, named after the German astronomer Johannes Kepler) is the motion of one body relative to another
Kepler_orbit
Classical approach to the many-body problem of astronomy
geometrical terms. This is called a two-body problem, or an unperturbed Keplerian orbit. The differences between that and the actual motion of the body are perturbations
Perturbation_(astronomy)
Transfer orbit used to reach geosynchronous or geostationary orbit
transfer orbit (GTO) or geosynchronous transfer orbit is a highly elliptical type of geocentric orbit, usually with a perigee as low as low Earth orbit (LEO)
Geostationary_transfer_orbit
Italian aerospace engineering company
and HENON, a satellite designed to forecast solar storms from a Distant retrograde orbit. Argotec has conducted extensive research in the field of heat
Argotec
Captured satellite following an irregular orbit
satellite following an orbit that is irregular in some or all of the following ways: distant; inclined; highly elliptical; retrograde. They have often been
Irregular_moon
Moon of Saturn
group, S/2004 S 24 could belong to the Gallic group. However, its orbit is much more distant, which puts this classification into question. It could very well
S/2004_S_24
Time an astronomical object takes to complete one orbit around another object
The orbital period (also revolution period) is the amount of time a given astronomical object takes to complete one orbit around another object. In astronomy
Orbital_period
Timekeeping system on Earth relative to the celestial sphere
rotates retrograde with a sidereal day lasting about 243.0 Earth days, or about 1.08 times its orbital period of 224.7 Earth days; hence by the retrograde formula
Sidereal_time
Kepler orbit with an eccentricity of less than one
elliptical orbit or eccentric orbit is an orbit with an eccentricity of less than 1;[citation needed] this includes the special case of a circular orbit, with
Elliptic_orbit
Sednoid
its 2018 position near γ Pegasi), showing retrograde loops every year List of Solar System objects most distant from the Sun List of Solar System objects
541132_Leleākūhonua
Moon of Jupiter
moons of Jupiter, Kore follows a highly inclined and elliptical orbit that is retrograde or opposite to the direction of the planet's rotation. Due to Kore's
Kore_(moon)
Halley-type comet
55P/Tempel–Tuttle (commonly known as Comet Tempel–Tuttle) is a retrograde periodic comet with an orbital period of 33 years. It fits the classical definition of
55P/Tempel–Tuttle
markers in photographs of distant stars, allowing precise and convenient measurement of astrometric positions. retrograde motion Orbital or rotational motion
Glossary_of_astronomy
Type of high-latitude satellite orbit
A Molniya orbit (Russian: Молния, IPA: [ˈmoɫnʲɪjə] , "Lightning") is a type of satellite orbit designed to provide communications and remote sensing coverage
Molniya_orbit
Spaceflight where spacecraft orbits an astronomical body
An orbital spaceflight (or orbital flight) is a spaceflight in which a spacecraft is placed on a trajectory where it could remain in space for at least
Orbital_spaceflight
Amount by which an orbit deviates from a perfect circle
value of 0 is a circular orbit, values between 0 and 1 form an elliptic orbit, 1 is a parabolic (escape orbit or capture orbit), and greater than 1 is
Orbital_eccentricity
Laws describing planetary orbits
astronomy, Kepler's laws of planetary motion give good approximations for the orbits of planets around the Sun. They were published by Johannes Kepler from 1609
Kepler's laws of planetary motion
Kepler's_laws_of_planetary_motion
Type of orbital maneuver
circular orbit with radius r 2 {\displaystyle r_{2}} is reached, a retrograde burn (mark 3) circularizes the trajectory into the final target orbit (red circle)
Bi-elliptic_transfer
Moon of Saturn
inclined orbital plane of the regular satellites; only the irregular outer satellites like Phoebe have more inclined orbits. Because of this distant, inclined
Iapetus_(moon)
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