USNO: US Naval Observatory Ephemeris data

                                 Titles: USNO
                                 ============
 
Contact:    W. Frati, Penn
 
Revision History:-
================
 
4.02    B. Frati      First Version.

 

 
Titles Files
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usno_deltat.dat
 
 
Verification
------------
 
 
Description
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This dates comes from US Naval Observatory WEB Site:-

  o ftp://maia.usno.navy.mil/ser7/deltat.data
  o ftp://maia.usno.navy.mil/ser7/deltat.preds
 
Bank Number:  1
 
 
Data Words
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        Fixed length Database Header.  See titles_dbhdr.html
 
       I = integer, F = floating point.
 
        The data consists of pairs of words:-

 
   i    F    Date in years e.g. 1975.25
   i+1  F    Delta_t is seconds.