Procedure

   SpiceDouble j2000_c ( void )

Abstract

   Return the Julian Date of 2000 JAN 01 12:00:00 (2000 JAN 1.5).

Required_Reading

   None.

Keywords

   CONSTANTS

Brief_I/O

   The function returns the Julian Date of 2000 JAN 01 12:00:00
   (2000 JAN 1.5).

Detailed_Input

   None.

Detailed_Output

   The function returns 2451545.0, the Julian Date corresponding
   to 2000 JAN 01 12:00:00 (2000 JAN 1.5).

Parameters

   None.

Exceptions

   Error free.

Files

   None.

Particulars

   The function always returns the constant value shown above.

Examples

   The following code fragment illustrates the use of j2000_c().


      Convert Julian ephemeris date to TDB seconds past the reference
      epoch (J2000).

      spref = ( jed - j2000_c() ) * spd_c();

Restrictions

   None.

Literature_References

   None.

Author_and_Institution

   E.D. Wright     (JPL)
   W.L. Taber      (JPL)
   I.M. Underwood  (JPL)

Version

   -CSPICE Version 1.0.2, 16-JAN-2008   (EDW)

      Corrected typos in header titles:
      
      Detailed Input to Detailed_Input
      Detailed Output to Detailed_Output
      
   -CSPICE Version 1.0.1, 10-NOV-2006 (EDW)

      Added Parameters section header. 

   -CSPICE Version 1.0.0, 08-FEB-1998 (EDW)

Index_Entries

   julian date of 2000 jan 1.5

Link to routine j2000_c source file j2000_c.c