Name

CL_mod_nutationAngles — Nutation angles (Wahr IAU 1980)

Calling Sequence

   [NUT,F[,NUTP,FP[,NUTPP,FPP]]]=CL_mod_nutationAngles(jj_tai,sec_tai[,flag])
   
   

Description

  • Calculate nutation angles (delta longitude, delta obliquity) according to Wahr nutation theory
  • Last update : 19/09/2007

Parameters

jj_tai :

CNES Julian day (TAI time) (1xN)

sec_tai :

seconds (TAI time) (1xN)

flag :

(optional) "n" -> NUT,F; "p" NUT,F and NUTP,Fp; "s" -> F, Fp, Fpp and NUT,NUTp,NUTPP (default depends on number of output variables)

NUT :

longitude, obliquity NUT=[DPSI;DEPS] [rad] (2xN)

F :

fundamentals arguments of nutation [rad] (5xN)

NUTP:

(optional with FP) first time derivative of NUT [rad/s] (2xN)

NUTPP :

(optional with FPP) second time derivative of NUT [rad/s^2] (5xN)

FP:

(optional with NUTP) first time derivative of F [rad/s] (2xN)

FPP :

(optional with NUTPP) second time derivative of F [rad/s^2] (5xN)

Authors

CNES - DCT/SB

Bibliography

1 IERS Conventions (1996), Dennis D. McCarthy

See also

CL_mod_nutationArg

Examples

jj_tai = [19500:1:20500];
ss_tai = 43200*ones(jj_tai);
[NUT,F,NUTP,FP,NUTPP,FPP]=CL_mod_nutationAngles(jj_tai,ss_tai,"s");
plot(jj_tai'+ss_tai'/86400,NUT');