public static function Bi00(&$dpsibi, &$depsbi, &$dra) {
    /* The frame bias corrections in longitude and obliquity */
    $DPBIAS = -0.041775 * DAS2R;
    $DEBIAS = -0.0068192 * DAS2R;

    /* The ICRS RA of the J2000.0 equinox (Chapront et al., 2002) */
    $DRA0 = -0.0146 * DAS2R;

    /* Return the results (which are fixed). */
    $dpsibi = $DPBIAS;
    $depsbi = $DEBIAS;
    $dra    = $DRA0;

    return;
  }