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Data Structures | |
| struct | iauASTROM |
| Star-independent astrometry parameters (Vectors eb, eh, em and v are all with respect to BCRS axes.) More... | |
| struct | iauLDBODY |
| Body parameters for light deflection. More... | |
Macros | |
| #define | DPI (3.141592653589793238462643) |
| Pi. More... | |
| #define | D2PI (6.283185307179586476925287) |
| 2 times pi More... | |
| #define | DR2D (57.29577951308232087679815) |
| Radians to degrees. More... | |
| #define | DD2R (1.745329251994329576923691e-2) |
| Degrees to radians. More... | |
| #define | DR2AS (206264.8062470963551564734) |
| Radians to arcseconds. More... | |
| #define | DAS2R (4.848136811095359935899141e-6) |
| Arcseconds to radians. More... | |
| #define | DS2R (7.272205216643039903848712e-5) |
| Seconds of time to radians. More... | |
| #define | TURNAS (1296000.0) |
| Arcseconds in a full circle. More... | |
| #define | DMAS2R (DAS2R / 1e3) |
| Milliarcseconds to radians. More... | |
| #define | DTY (365.242198781) |
| Length of tropical year B1900 (days) More... | |
| #define | DAYSEC (86400.0) |
| Seconds per day. More... | |
| #define | DJY (365.25) |
| Days per Julian year. More... | |
| #define | DJC (36525.0) |
| Days per Julian century. More... | |
| #define | DJM (365250.0) |
| Days per Julian millennium. More... | |
| #define | DJ00 (2451545.0) |
| Reference epoch (J2000.0), Julian Date. More... | |
| #define | DJM0 (2400000.5) |
| Julian Date of Modified Julian Date zero. More... | |
| #define | DJM00 (51544.5) |
| Reference epoch (J2000.0), Modified Julian Date. More... | |
| #define | DJM77 (43144.0) |
| 1977 Jan 1.0 as MJD More... | |
| #define | TTMTAI (32.184) |
| TT minus TAI (s) More... | |
| #define | DAU (149597870.7e3) |
| Astronomical unit (m, IAU 2012) More... | |
| #define | CMPS 299792458.0 |
| Speed of light (m/s) More... | |
| #define | AULT (DAU/CMPS) |
| Light time for 1 au (s) More... | |
| #define | DC (DAYSEC/AULT) |
| Speed of light (AU per day) More... | |
| #define | ELG (6.969290134e-10) |
| L_G = 1 - d(TT)/d(TCG) More... | |
| #define | ELB (1.550519768e-8) |
| L_B = 1 - d(TDB)/d(TCB) More... | |
| #define | TDB0 (-6.55e-5) |
| TDB (s) at TAI 1977/1/1.0. More... | |
| #define | SRS 1.97412574336e-8 |
| Schwarzschild radius of the Sun (au) = 2 * 1.32712440041e20 / (2.99792458e8)^2 / 1.49597870700e11. More... | |
| #define | dint(A) ((A)<0.0?ceil(A):floor(A)) |
| truncate to nearest whole number towards zero (double) More... | |
| #define | dnint(A) |
| round to nearest whole number (double) More... | |
| #define | dsign(A, B) ((B)<0.0?-fabs(A):fabs(A)) |
| magnitude of A with sign of B (double) More... | |
| #define | gmax(A, B) (((A)>(B))?(A):(B)) |
| larger (most +ve) of two numbers (generic) More... | |
| #define | gmin(A, B) (((A)<(B))?(A):(B)) |
| smaller (least +ve) of two numbers (generic) More... | |
| #define | WGS84 1 |
| Reference ellipsoid. More... | |
| #define | GRS80 2 |
| Reference ellipsoid. More... | |
| #define | WGS72 3 |
| Reference ellipsoid. More... | |
Macro Definition Documentation
◆ AULT
◆ CMPS
| #define CMPS 299792458.0 |
Speed of light (m/s)
◆ D2PI
| #define D2PI (6.283185307179586476925287) |
2 times pi
◆ DAS2R
| #define DAS2R (4.848136811095359935899141e-6) |
Arcseconds to radians.
◆ DAU
| #define DAU (149597870.7e3) |
Astronomical unit (m, IAU 2012)
◆ DAYSEC
| #define DAYSEC (86400.0) |
Seconds per day.
◆ DC
◆ DD2R
| #define DD2R (1.745329251994329576923691e-2) |
Degrees to radians.
◆ dint
| #define dint | ( | A | ) | ((A)<0.0?ceil(A):floor(A)) |
truncate to nearest whole number towards zero (double)
◆ DJ00
| #define DJ00 (2451545.0) |
Reference epoch (J2000.0), Julian Date.
◆ DJC
| #define DJC (36525.0) |
Days per Julian century.
◆ DJM
| #define DJM (365250.0) |
Days per Julian millennium.
◆ DJM0
| #define DJM0 (2400000.5) |
Julian Date of Modified Julian Date zero.
◆ DJM00
| #define DJM00 (51544.5) |
Reference epoch (J2000.0), Modified Julian Date.
◆ DJM77
| #define DJM77 (43144.0) |
1977 Jan 1.0 as MJD
◆ DJY
| #define DJY (365.25) |
Days per Julian year.
◆ DMAS2R
| #define DMAS2R (DAS2R / 1e3) |
Milliarcseconds to radians.
◆ dnint
| #define dnint | ( | A | ) |
Value:
(fabs(A)<0.5?0.0\
:((A)<0.0?ceil((A)-0.5):floor((A)+0.5)))
round to nearest whole number (double)
◆ DPI
| #define DPI (3.141592653589793238462643) |
Pi.
◆ DR2AS
| #define DR2AS (206264.8062470963551564734) |
Radians to arcseconds.
◆ DR2D
| #define DR2D (57.29577951308232087679815) |
Radians to degrees.
◆ DS2R
| #define DS2R (7.272205216643039903848712e-5) |
Seconds of time to radians.
◆ dsign
| #define dsign | ( | A, | |
| B | |||
| ) | ((B)<0.0?-fabs(A):fabs(A)) |
magnitude of A with sign of B (double)
◆ DTY
| #define DTY (365.242198781) |
Length of tropical year B1900 (days)
◆ ELB
| #define ELB (1.550519768e-8) |
L_B = 1 - d(TDB)/d(TCB)
◆ ELG
| #define ELG (6.969290134e-10) |
L_G = 1 - d(TT)/d(TCG)
◆ gmax
| #define gmax | ( | A, | |
| B | |||
| ) | (((A)>(B))?(A):(B)) |
larger (most +ve) of two numbers (generic)
◆ gmin
| #define gmin | ( | A, | |
| B | |||
| ) | (((A)<(B))?(A):(B)) |
smaller (least +ve) of two numbers (generic)
◆ GRS80
| #define GRS80 2 |
Reference ellipsoid.
◆ SRS
| #define SRS 1.97412574336e-8 |
Schwarzschild radius of the Sun (au) = 2 * 1.32712440041e20 / (2.99792458e8)^2 / 1.49597870700e11.
◆ TDB0
| #define TDB0 (-6.55e-5) |
TDB (s) at TAI 1977/1/1.0.
◆ TTMTAI
| #define TTMTAI (32.184) |
TT minus TAI (s)
◆ TURNAS
| #define TURNAS (1296000.0) |
Arcseconds in a full circle.
◆ WGS72
| #define WGS72 3 |
Reference ellipsoid.
◆ WGS84
| #define WGS84 1 |
Reference ellipsoid.
