[Spice_discussion] Lagrangian points...

Acton, Charles H (343N) charles.h.acton at jpl.nasa.gov
Wed Jul 20 13:55:29 PDT 2011

Yes, I answered 6/27 with copy to all.


On 6/27/11 5:25 AM, "John Irwin" <jir1959 at btinternet.com> wrote:

Two questions:
(1) Is there any facilty in SPICE to evaluate the position and velocity of
the Lagrangian points given the ephemerides of two solar system bodies?
(2) What would be the JPL/NAIF IDs of each of the Lagrangian points? I
notice that HORIZONS provides ephemerides for the L1 and L2 points of the
Sun-EMB system, with IDs 391 and 392, which suggests 393,394,395 for L3,
L4 and L5. But what of other systems like Earth-Moon, or Sun-Jupiter for
Thank you.

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