|
Lagrangian point
Book article from: A Dictionary of Astronomy
Lagrangian point One of five points at which small...example of bodies lying at the L 4 and L 5 Lagrangian points are the Trojan asteroids in Jupiter...Telesto and Calypso lie at the L 4 and L 5 Lagrangian points in the orbit of the much larger...
|
|
Lagrangian points
Book article from: A Dictionary of Earth Sciences
Lagrangian points The locations where the gravitational attraction of two...family of asteroids occupy positions close to two of the jovian Lagrangian points. Lagrangian points are named after the French astronomer Comte J. L. Lagrange...
|
|
|
Lagrangian current measurement
Book article from: A Dictionary of Earth Sciences
Lagrangian current measurement A technique for measuring water movements by tracing the path of a water particle over a long time interval...
|
|
|
halo orbit
Book article from: A Dictionary of Astronomy
...spacecraft will remain in the vicinity of a Lagrangian point . A halo orbit actually takes...circular or elliptical loop around the Lagrangian point. The first spacecraft to use...000 km around the L 1 Lagrangian point between the Earth and Sun.
|
|
|
Trojan asteroid
Book article from: A Dictionary of Astronomy
...They lie clustered around the leading (L 4 ) and following (L 5 ) Lagrangian points , 60 ° ahead of and behind Jupiter...Neptunian Trojan (2001 QR 322 ) was discovered at Neptune's leading Lagrangian point.
|
|
|
Gaia
Book article from: A Dictionary of Astronomy
...Gaia is a successor to ESA's Hipparcos mission and is planned for launch in 2011 or 2012. It will be stationed at the L 2 Lagrangian point of the Sun–Earth system, 1.5 million km from the Earth in the direction away from the Sun. The name...
|
|
|
mass loss
Book article from: A Dictionary of Astronomy
...stage of stellar evolution it may give rise to a planetary nebula . Violent ejection occurs in a nova or supernova explosion. Mass loss may also occur through the outer Lagrangian point in a contact binary or overcontact binary system.
|
|
|
Solar and Heliospheric Observatory
Book article from: A Dictionary of Astronomy
...EUV, and the Michelson Doppler Imager ( MDI ), which studies solar oscillations. SOHO is in a halo orbit around the inner Lagrangian point (L 1 ) between the Sun and Earth, some 1.5 million km from the Earth in the sunward direction, so that the Sun...
|
|
|
Advanced Composition Explorer
Book article from: A Dictionary of Astronomy
...the composition of the solar wind and cosmic rays, launched 1997 August. It was stationed in a halo orbit around the L 1 Lagrangian point 1.5 million km sunwards of the Earth. ACE carried nine instruments to sample low-energy particles of solar origin...
|
|
|
James Webb Space Telescope
Book article from: A Dictionary of Astronomy
...consisting of 18 hexagonal segments which will be folded for launch and opened when in space. JWST will be positioned at the L 2 Lagrangian point , 1.5 million km from Earth on the side away from the Sun. It is designed to operate at infrared wavelengths, to...
|
