NASA - SPDF - Satellite Situation Center Web ()

nasa 4dThis value should be one of SM, GSM, GSE, GM, GEO, GEI_J2000, GEI_TOD. This parameter is optional and defaults to the 4D Orbit Viewer's default value. resolution: small integer: ThisNASA Ames Research Center, Moffett Field, CA 94035 ... heavily on the exchange of 4D trajectory information to achieve hher levels of automation for conflict detection