novas_timespec Struct Reference

A structure, which defines a precise instant of time that can be extpressed in any of the astronomical timescales. More...

#include <novas.h>

Public Attributes
double	dut1
	[s] UT1 - UTC time difference
double	fjd_tt
	[day] Terrestrial time (TT) based fractional Julian day.
long	ijd_tt
	[day] Integer part of the Terrestrial Time (TT) based Julian Date
double	tt2tdb
	[s] TDB - TT time difference
double	ut1_to_tt
	[s] UT1 - TT time difference

Detailed Description

A structure, which defines a precise instant of time that can be extpressed in any of the astronomical timescales.

Precisions to picosecond accuracy are supported, which ought to be plenty accurate for any real astronomical application.

Since

1.1

See also

novas_set_time(), novas_get_time(), NOVAS_TIMESPEC_INIT, enum novas_timescale, timescale.c

novas_make_frame()

Member Data Documentation

dut1

double novas_timespec::dut1

[s] UT1 - UTC time difference

Referenced by novas_time_leap().

fjd_tt

double novas_timespec::fjd_tt

[day] Terrestrial time (TT) based fractional Julian day.

Referenced by supernovas::Time::Time(), novas_app_to_hor(), novas_clock_skew(), novas_diff_time(), novas_equ_track(), novas_hor_to_app(), novas_hor_track(), novas_make_frame(), and novas_offset_time().

ijd_tt

long novas_timespec::ijd_tt

[day] Integer part of the Terrestrial Time (TT) based Julian Date

Referenced by novas_app_to_hor(), novas_clock_skew(), novas_diff_time(), novas_hor_to_app(), novas_make_frame(), and novas_offset_time().

tt2tdb

double novas_timespec::tt2tdb

[s] TDB - TT time difference

Referenced by supernovas::Time::Time(), and novas_make_frame().

ut1_to_tt

double novas_timespec::ut1_to_tt

[s] UT1 - TT time difference

Referenced by supernovas::Time::Time(), and novas_time_leap().