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gptkbp:instanceOf
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gptkb:Titan
Astronomical concept
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gptkbp:alsoKnownAs
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Lagrange point
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gptkbp:alternativeName
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Lagrangian_point
Lissajous_orbit
halo_orbit
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gptkbp:appliesTo
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gptkb:Planck_spacecraft
gptkb:SOHO_spacecraft
gptkb:Herschel_Space_Observatory
gptkb:James_Webb_Space_Telescope
Two-body systems
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gptkbp:characterizedBy
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oscillatory motion in two directions
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gptkbp:defines
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A position in space where the gravitational forces of two large bodies balance the centripetal force felt by a smaller object.
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gptkbp:dimensions
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three-dimensional
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gptkbp:example
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gptkb:Earth-Moon_L1
gptkb:Earth-Moon_L2
gptkb:Earth-Moon_L3
gptkb:Earth-Moon_L4
gptkb:Earth-Moon_L5
gptkb:Earth-Sun_L1
gptkb:Earth-Sun_L2
gptkb:Earth-Sun_L3
gptkb:Earth-Sun_L4
gptkb:Earth-Sun_L5
gptkb:Earth–Moon_system
gptkb:Sun–Earth_system
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gptkbp:field
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gptkb:Celestial_mechanics
Orbital mechanics
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gptkbp:firstDescribed
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1772
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gptkbp:form
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gptkb:Restricted_three-body_problem
gptkb:Lissajous_curve
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gptkbp:introducedIn
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1970s
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gptkbp:L1_location
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Between the two large bodies
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gptkbp:L1_stability
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Unstable
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gptkbp:L2_location
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Beyond the smaller body, away from the larger body
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gptkbp:L2_stability
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Unstable
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gptkbp:L3_location
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Opposite side of the larger body from the smaller body
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gptkbp:L3_stability
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Unstable
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gptkbp:L4_location
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60 degrees ahead of the smaller body in its orbit
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gptkbp:L4_stability
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Stable
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gptkbp:L5_location
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60 degrees behind the smaller body in its orbit
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gptkbp:L5_stability
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Stable
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gptkbp:location
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Orbital configuration of two large bodies
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gptkbp:namedAfter
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gptkb:Joseph-Louis_Lagrange
gptkb:Jules_Antoine_Lissajous
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gptkbp:number
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5
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gptkbp:pointsSystem
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5
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gptkbp:property
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Gravitational equilibrium
Stable (L4, L5)
Unstable (L1, L2, L3)
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gptkbp:relatedTo
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Lagrange point
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gptkbp:requires
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station-keeping maneuvers
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gptkbp:stable
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unstable
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gptkbp:symbol
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gptkb:L1
gptkb:L2
gptkb:L5
gptkb:L3
gptkb:L4
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gptkbp:type
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quasi-periodic orbit
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gptkbp:usedBy
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gptkb:Gaia_spacecraft
gptkb:SOHO_spacecraft
gptkb:James_Webb_Space_Telescope
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gptkbp:usedIn
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gptkb:Astrodynamics
gptkb:Lagrange_points
Space missions
spacecraft missions
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gptkbp:bfsParent
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gptkb:SOHO_mission
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gptkbp:bfsLayer
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4
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