SuperNOVAS C++ API v1.6
High-precision C/C++ astrometry library
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novas_eop Struct Reference

Earth Orienation Parameters (EOP), such as obtained from IERS. More...

#include <novas.h>

Public Attributes

float dut1
 [s] UT1 - UTC time difference.
float dut1_err
 [s] Standard error on UT1 - UTC time difference.
double jd
 [day] Julian day of the measurement or prognosis (in any time measure).
int leap
 [s] Leap seconds, that is the TAI - UTC time difference.
float lod
 [s] Length of day (LOD) differential.
float lod_err
 [s] Standard error on Length of day (LOD).
enum novas_eop_series series
 Origin of EOP data (if known).
float xp
 [arcsec] xp: polar offset in ITRF x direction.
float xp_err
 [arcsec] Standard error on xp.
float yp
 [arcsec] yp: polar offset in ITRF y direction.
float yp_err
 [arcsec] Standard error on yp.

Detailed Description

Earth Orienation Parameters (EOP), such as obtained from IERS.

Since
1.7
Author
Attila Kovacs

Member Data Documentation

◆ dut1

float novas_eop::dut1

◆ dut1_err

float novas_eop::dut1_err

[s] Standard error on UT1 - UTC time difference.

◆ jd

double novas_eop::jd

[day] Julian day of the measurement or prognosis (in any time measure).

◆ leap

int novas_eop::leap

[s] Leap seconds, that is the TAI - UTC time difference.

Referenced by supernovas::GeodeticObserver::eop_at(), supernovas::EOP::fetch_for_jd(), and novas_set_split_time().

◆ lod

float novas_eop::lod

[s] Length of day (LOD) differential.

◆ lod_err

float novas_eop::lod_err

[s] Standard error on Length of day (LOD).

◆ series

enum novas_eop_series novas_eop::series

Origin of EOP data (if known).

◆ xp

float novas_eop::xp

[arcsec] xp: polar offset in ITRF x direction.

Referenced by supernovas::GeodeticObserver::eop_at(), supernovas::EOP::fetch_for_jd(), and novas_make_frame().

◆ xp_err

float novas_eop::xp_err

[arcsec] Standard error on xp.

◆ yp

float novas_eop::yp

[arcsec] yp: polar offset in ITRF y direction.

Referenced by supernovas::GeodeticObserver::eop_at(), supernovas::EOP::fetch_for_jd(), and novas_make_frame().

◆ yp_err

float novas_eop::yp_err

[arcsec] Standard error on yp.