Listar por tema "astronomy"

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    • closedAccess   Improved Method for Orbital Elements Differential Correction. 

      López García, A.; López Ortí, José Antonio; López Machí, R. © Springer Netherlands (1990)
      As was pointed out by IAU in 1976, an important problem in fundamental astronomy is the improvement of the vernal equinox and equator positions. To this aim, it is necessary to know the accurate values of minor planets ...

    • openAccess   The Moon │Project │ STEM 

      Muñoz, Robert; Posilio Gellida, Estela; NASA AD&D 4D (2019-05-15)