For the hypothetical satellite employing a solar sail, see Statite.
Halo orbit
Polar view
Equatorial view
SOHO's trajectory, a halo orbit around the Sun-Earth L1 point Earth· SOHO
Polar view of the Sun-Earth Lagrange points. Halo orbits orbit L1, L2, or L3 (orbits not shown in diagram).
Part of a series on
Astrodynamics
Orbital mechanics
Orbital elements
Apsis
Argument of periapsis
Eccentricity
Inclination
Mean anomaly
Orbital nodes
Semi-major axis
True anomaly
Types of two-body orbits by eccentricity
Circular orbit
Elliptic orbit
Transfer orbit
(Hohmann transfer orbit
Bi-elliptic transfer orbit)
Parabolic orbit
Hyperbolic orbit
Radial orbit
Decaying orbit
Equations
Dynamical friction
Escape velocity
Kepler's equation
Kepler's laws of planetary motion
Orbital period
Orbital velocity
Surface gravity
Specific orbital energy
Vis-viva equation
Celestial mechanics
Gravitational influences
Barycenter
Hill sphere
Perturbations
Sphere of influence
N-body orbits
Lagrangian points
(Halo orbits)
Lissajous orbits
Lyapunov orbits
Engineering and efficiency
Preflight engineering
Mass ratio
Payload fraction
Propellant mass fraction
Tsiolkovsky rocket equation
Efficiency measures
Gravity assist
Oberth effect
Propulsive maneuvers
Orbital maneuver
Orbit insertion
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A halo orbit is a periodic, three-dimensional orbit associated with one of the L1, L2 or L3 Lagrange points in the three-body problem of orbital mechanics. Although a Lagrange point is just a point in empty space, its peculiar characteristic is that it can be orbited by a Lissajous orbit or by a halo orbit. These can be thought of as resulting from an interaction between the gravitational pull of the two planetary bodies and the Coriolis and centrifugal force on a spacecraft. Halo orbits exist in any three-body system, e.g., a Sun–Earth–orbiting satellite system or an Earth–Moon–orbiting satellite system. Continuous "families" of both northern and southern halo orbits exist at each Lagrange point. Because halo orbits tend to be unstable, station-keeping using thrusters may be required to keep a satellite on the orbit.
Most satellites in halo orbit serve scientific purposes, for example space telescopes.
Haloorbit A haloorbit is a periodic, three-dimensional orbit associated with one of the L1, L2 or L3 Lagrange points in the three-body problem of orbital...
co-orbit with the planet. See asteroids 3753 Cruithne and 2002 AA29. Libration point orbits such as haloorbits and Lissajous orbits: These are orbits around...
launched Euclid, also occupy orbits around L2. Gaia keeps a tighter Lissajous orbit around L2, while Euclid follows a haloorbit similar to JWST. Each of...
are intended to launch after the initial NASA PPE and HALO elements are placed into lunar orbit with some co-manifested with Artemis missions. On 1 November...
circular orbit after the LM had made its landing. Cislunar space List of orbitsOrbital mechanics Distant retrograde orbit Near-rectilinear haloorbit Woods...
Look up HALO, Halo, halo, or halo- in Wiktionary, the free dictionary. HALO, halo, halos or haloes may refer to: Halo (optical phenomenon) Halo (religious...
gravitational pull, a haloorbit is not an orbit in the usual sense: the spacecraft is actually in orbit around the Sun, and the haloorbit can be thought of...
term "haloorbit" (not to be confused with the type of haloorbit discovered by Robert Farquhar). Subsequently, the terms "non-Keplerian orbit" and "artificial...
Earth-Sun observations.) The Solar and Heliospheric Observatory (SOHO) in a haloorbit around L1 Mission: Investigation of the outer layer of the Sun, making...
plane, tracing out an elliptical haloorbit centered about L1. It orbits L1 once every six months, while L1 itself orbits the Sun every 12 months as it is...
satellites orbit other bodies (such as the Moon, Mars, and the Sun) or many bodies at once (two for a haloorbit, three for a Lissajous orbit). Earth observation...
the program have been criticized, such as the use of a near-rectilinear haloorbit and the sustainability of the space program. Orion's first launch on the...
low-energy cislunar orbit transfers between a near-rectilinear haloorbit (NRHO) and a distant retrograde orbit (DRO) and orbit maintenance for a period...
was scheduled to orbit for six months. On 18 May 2023, it completed its primary mission to orbit in the near-rectilinear haloorbit for six months, but...
types of orbits near the equilibrium points, include Lyapunov orbits, haloorbits, Lissajous orbits, and quasi-haloorbits. Lyapunov orbits pass behind...
Immer (2006) Before Gardens After Gardens (2012) Digital Gardens (2014) HaloOrbit (2016/2017) Live (2003) Frances the Mute (2005) Scabdates (2005) Amputechture...
elliptic orbit or elliptical orbit is a Kepler orbit with an eccentricity of less than 1; this includes the special case of a circular orbit, with eccentricity...
haloorbit (NRHO) prior to arrival of the crew for use on the Artemis 3 mission. The delivery requires that Starship HLS be refueled in Earth orbit before...
orbit at 128,000 km. The inner boundary of the main ring, in contrast, appears to fade off slowly from 124,000 to 120,000 km, merging into the halo ring...
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