fixed dependencies

vendor/github.com/hebl/gofa/gofa.go

@@ -0,0 +1,42 @@
+// Copyright 2022 HE Boliang
+// All rights reserved.
+
+package gofa
+
+const (
+	VERSION = 1.18
+)
+
+/*
+ASTROM Star-independent astrometry parameters
+
+(Vectors Eb, Eh, Em and V are all with respect to BCRS axes.)
+*/
+type ASTROM struct {
+	Pmt    float64       /* PM time interval (SSB, Julian years) */
+	Eb     [3]float64    /* SSB to observer (vector, au) */
+	Eh     [3]float64    /* Sun to observer (unit vector) */
+	Em     float64       /* distance from Sun to observer (au) */
+	V      [3]float64    /* barycentric observer velocity (vector, c) */
+	Bm1    float64       /* sqrt(1-|v|^2): reciprocal of Lorenz factor */
+	Bpn    [3][3]float64 /* bias-precession-nutation matrix */
+	Along  float64       /* longitude + s' + dERA(DUT) (radians) */
+	Phi    float64       /* geodetic latitude (radians) */
+	Xpl    float64       /* polar motion xp wrt local meridian (radians) */
+	Ypl    float64       /* polar motion yp wrt local meridian (radians) */
+	Sphi   float64       /* sine of geodetic latitude */
+	Cphi   float64       /* cosine of geodetic latitude */
+	Diurab float64       /* magnitude of diurnal aberration vector */
+	Eral   float64       /* "local" Earth rotation angle (radians) */
+	Refa   float64       /* refraction constant A (radians) */
+	Refb   float64       /* refraction constant B (radians) */
+}
+
+/*
+LDBODY Body parameters for light deflection
+*/
+type LDBODY struct {
+	Bm float64       /* mass of the body (solar masses) */
+	Dl float64       /* deflection limiter (radians^2/2) */
+	Pv [2][3]float64 /* barycentric PV of the body (au, au/day) */
+}