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The barycenter of the Solar System, while always very near the Sun, moves through space as time passes depending on where other large bodies in the Solar System, such as [[Jupiter]] and other large [[gas planet]]s, are located at that time. A similar phenomenon allows the detection of [[exoplanets]] by way of the [[radial velocity method]]. |
The barycenter of the Solar System, while always very near the Sun, moves through space as time passes depending on where other large bodies in the Solar System, such as [[Jupiter]] and other large [[gas planet]]s, are located at that time. A similar phenomenon allows the detection of [[exoplanets]] by way of the [[radial velocity method]]. |
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| − | The ''helio-'' prefix is derived from the |
+ | The ''helio-'' prefix is derived from the Greek word ''helios'', meaning "sun", and also [[Helios]], the [[personification]] of the Sun in Greek mythology.<ref name="dictionary.com"> |
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{{cite web |
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The first spacecraft to be put in a heliocentric orbit is [[Luna 1]], which was planned to go to the Moon but instead missed due to an incorrectly timed upper stage burn. |
The first spacecraft to be put in a heliocentric orbit is [[Luna 1]], which was planned to go to the Moon but instead missed due to an incorrectly timed upper stage burn. |
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+ | ==Trans-Mars injection== |
[[File:Trans-Mars injection.png|thumb|Trans-Mars injection diagram.<br/>A = Hohmann transfer orbit. B = Conjunction mission. C = Opposition mission]] |
[[File:Trans-Mars injection.png|thumb|Trans-Mars injection diagram.<br/>A = Hohmann transfer orbit. B = Conjunction mission. C = Opposition mission]] |
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Every two years, [[low-energy transfer]] windows open up which allow movement between planets with the lowest possible [[delta-v]] requirements. Transfer injections can place spacecraft into either a [[Hohmann transfer orbit]] or [[bi-elliptic transfer]] orbit. Trans-Mars injections can be either a single maneuver burn, such as that used by the NASA [[MAVEN]] orbiter, or a series of perigee kicks, such as that used by the ISRO [[Mars Orbiter Mission]].<ref>[http://www.thehindu.com/news/national/isro-successfully-sends-mars-orbiter-into-suncentric-orbit/article5409061.ece?homepage=true ISRO successfully sends Mars orbiter into sun-centric orbit]</ref><ref>[http://www.sify.com/news/orbiter-successfully-placed-in-mars-transfer-trajectory-news-science-nmbdgtggghh.html Orbiter successfully placed in Mars Transfer Trajectory]</ref> |
Every two years, [[low-energy transfer]] windows open up which allow movement between planets with the lowest possible [[delta-v]] requirements. Transfer injections can place spacecraft into either a [[Hohmann transfer orbit]] or [[bi-elliptic transfer]] orbit. Trans-Mars injections can be either a single maneuver burn, such as that used by the NASA [[MAVEN]] orbiter, or a series of perigee kicks, such as that used by the ISRO [[Mars Orbiter Mission]].<ref>[http://www.thehindu.com/news/national/isro-successfully-sends-mars-orbiter-into-suncentric-orbit/article5409061.ece?homepage=true ISRO successfully sends Mars orbiter into sun-centric orbit]</ref><ref>[http://www.sify.com/news/orbiter-successfully-placed-in-mars-transfer-trajectory-news-science-nmbdgtggghh.html Orbiter successfully placed in Mars Transfer Trajectory]</ref> |
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* [[Earth's orbit]] |
* [[Earth's orbit]] |
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* [[Geocentric orbit]] |
* [[Geocentric orbit]] |
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* [[List of orbits]] |
* [[List of orbits]] |
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+ | ==References== |
{{reflist}} |
{{reflist}} |
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[[Category:Orbital maneuvers]] |
[[Category:Orbital maneuvers]] |
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[[Category:Exploration of Mars]] |
[[Category:Exploration of Mars]] |
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| + | {{Wikipedia|Heliocentric orbit}} |
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Revision as of 02:18, 3 July 2016
The BepiColombo heliocentric cruise will use gravity assists around the Earth, Venus and Mercury and will last 6 years
A heliocentric orbit (also called circumsolar orbit) is an orbit around the barycenter of the Solar System, which is usually located within or very near the surface of the Sun. All planets, comets, and asteroids in the Solar System are in such orbits, as are many artificial probes and pieces of debris. The moons of planets in the Solar System, by contrast, are not in heliocentric orbits as they orbit their respective planet.
The barycenter of the Solar System, while always very near the Sun, moves through space as time passes depending on where other large bodies in the Solar System, such as Jupiter and other large gas planets, are located at that time. A similar phenomenon allows the detection of exoplanets by way of the radial velocity method.
The helio- prefix is derived from the Greek word helios, meaning "sun", and also Helios, the personification of the Sun in Greek mythology.[1]
The first spacecraft to be put in a heliocentric orbit is Luna 1, which was planned to go to the Moon but instead missed due to an incorrectly timed upper stage burn.
Trans-Mars injection
Trans-Mars injection diagram.
A = Hohmann transfer orbit. B = Conjunction mission. C = Opposition mission
A trans-Mars injection (TMI) is a heliocentric orbit in which a propulsive maneuver is used to set a spacecraft on a trajectory, also known as Mars transfer orbit, which will cause it to arrive at Mars.
Every two years, low-energy transfer windows open up which allow movement between planets with the lowest possible delta-v requirements. Transfer injections can place spacecraft into either a Hohmann transfer orbit or bi-elliptic transfer orbit. Trans-Mars injections can be either a single maneuver burn, such as that used by the NASA MAVEN orbiter, or a series of perigee kicks, such as that used by the ISRO Mars Orbiter Mission.[2][3]
See also
- Earth's orbit
- Geocentric orbit
- Heliocentrism
- Astrodynamics
- Low-energy transfer
- List of artificial objects in heliocentric orbit
- List of orbits
References
- ↑ "helio-". Dictionary.com Unabridged (v 1.1). Random House. 2006. http://dictionary.reference.com/browse/helio-. Retrieved 2009-02-12.
- ↑ ISRO successfully sends Mars orbiter into sun-centric orbit
- ↑ Orbiter successfully placed in Mars Transfer Trajectory
Template:Orbits
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