Rick Baldridge wrote: > Not quite. L2 Lagrange point is on a LINE with the Sun and the Earth, > further out than the Earth, with the Moon's orbit well inside. L2 does NOT > follow the Moon, therefore, it does NOT stay in-sync with the "far side" of > the Moon. I disagree. Lagrangian points L1 thru L5 are present in EACH two-body system, eg. Sun-Earth (this is descrived in cited e-mail), but also in e.g. Sun-Jupiter system (there are in the vicinity of point L3 and L4 asteroids called Troians). Stability of orbits of object inserted in Lagrangian points depends mainly on disturbing gravitational forces of other celestial bodies. As the influence of the Sun on the Earth-Moon system is rather strong, the use of Langrangien point in Earth-Moon system might be questionable (thi is only a guess, proof might be done only using rather complicated numerical integration of orbits in question). Excuse an OT e-mail ---------------------------------------------------------- Antonin Vitek Office: Main Library - Academy of Sciences of the Czech Republic Narodni 3, CZ-115 22 Praha 1, Czech Republic Phone: +420(2)21 40 32 55 **** Note change in phone no. **** Fax: +420(2)24 24 05 26 E-mail:AVITEK@LIB.CAS.CZ My satellite home page: http://www.lib.cas.cz/knav/space.40/index.html Home: Kytin 127, CZ-525 10 p. Mnisek p.B., Czech Republic Phone: +420(305)592865 Coordinates: 14.2193 deg E, 49.8488 deg N, 442 m ASL ---------------------------------------------------------- ----------------------------------------------------------------- Unsubscribe from SeeSat-L by sending a message with 'unsubscribe' in the SUBJECT to SeeSat-L-request@lists.satellite.eu.org http://www2.satellite.eu.org/seesat/seesatindex.html
This archive was generated by hypermail 2b29 : Thu Jun 28 2001 - 05:48:07 PDT