Astrometría e Historia de la Astronomía

José Gómez Castaño 

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    Inserción de 1 segundo intercalar el 31 de diciembre de 2005

    Según el Boletín del IERS (International Earth Rotation and Reference Systems Service) num 40 del 6 de octubre el próximo 31 de diciembre de 2005 se insertará 1 segundo en la escala de tiempos UTC que habrá que tener en cuenta en las medidas de tiempo astronómico. Desde el 1 de enero de 1999 no se realizaba una corrección de este tipo.

    La inserción se realizará retrasando 1 segundo la escala UTC, de acuerdo a la siguiente secuencia:

    31 diciembre 2005 23h 59m 59s
    31 diciembre 2005 23h 59m 60s
    01 enero 2006 00h 00m 00s

    Desde 1999 la diferencia entre UTC y Tiempo Atómico Internacional (TAI) era de 32 segundos, pasando a ser ahora de 33 segundos, aplicándose entonces la siguiente corrección el 1 de enero del 2006

    TAI - UTC = +33s

    Las correcciones particulares para UT1 - UTC, se pueden encontrar para todo el año en el citado boletin IERS

    Esta inserción tendrá efectos en resto de escalas de tiempo que se basan en UTC, como GPS, por lo que la relación entre ambos quedará de la siguiente forma desde el 1 de enero de 2006

    GPS - UTC = +14s

    Todos estos valores habrá que tenerlos en cuenta en la reducción de observaciones que se hagan a partir de ahora.

    2005-10-07 09:26 | Categoría: | 13 Comentarios | Enlace



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