Name

CL_dat_cjd2jd — CNES Julian date to Julian date

Calling Sequence

   jd = CL_dat_cjd2jd(cjd)
   
   

Description

  • This function converts a CNES Julian date (number of fractionnal days since January 1st 1950) into a Julian date (number of fractionnal days since noon UT on January 1st 4713 BC)

    The fractional part of jd (jd-int(jd)) gives the time of the day since noon UT as a decimal fraction of one day with 0.5 representing midnight UT.

    The fractional part of cjd (cjd-int(cjd)) gives the time of the day as a decimal fraction of one day with 0.5 representing midday UT.

  • Last update : 27/6/2008

Parameters

cjd:

CNES Julian date (number of fractionnal days since January 1st 1950) (1xN)

jd:

Julian date (number of fractionnal days since noon UT on 1 January 4713 BC) (1xN)

Bibliography

1 Mecanique spatiale, CNES - Cepadues 1995, Chapitre 3, section 3.3.3 Les annees

See also

CL_dat_jd2cjd, CL_dat_jd2cal

Authors

CNES - DCT/SB

Examples

// Example 1
CL_dat_cjd2jd([20000;20001])

// Example 2
cjd=[18262.5 18000];
jd = CL_dat_cjd2jd(cjd);
cjd2 = CL_dat_jd2cjd(jd);