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| author | Joseph Hunkeler <jhunkeler@gmail.com> | 2015-03-04 21:21:30 -0500 |
|---|---|---|
| committer | Joseph Hunkeler <jhunkeler@gmail.com> | 2015-03-04 21:21:30 -0500 |
| commit | d54fe7c1f704a63824c5bfa0ece65245572e9b27 (patch) | |
| tree | afc52015ffc2c74e0266653eecef1c8ef8ba5d91 /src/slalib/sun67.htx/node228.html | |
| download | calfuse-d54fe7c1f704a63824c5bfa0ece65245572e9b27.tar.gz | |
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diff --git a/src/slalib/sun67.htx/node228.html b/src/slalib/sun67.htx/node228.html new file mode 100644 index 0000000..f21ae0e --- /dev/null +++ b/src/slalib/sun67.htx/node228.html @@ -0,0 +1,696 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN"> +<!--Converted with LaTeX2HTML 97.1 (release) (July 13th, 1997) + by Nikos Drakos (nikos@cbl.leeds.ac.uk), CBLU, University of Leeds +* revised and updated by: Marcus Hennecke, Ross Moore, Herb Swan +* with significant contributions from: + Jens Lippman, Marek Rouchal, Martin Wilck and others --> +<HTML> +<HEAD> +<TITLE>SUMMARY OF CALLS</TITLE> +<META NAME="description" CONTENT="SUMMARY OF CALLS"> +<META NAME="keywords" CONTENT="sun67"> +<META NAME="resource-type" CONTENT="document"> +<META NAME="distribution" CONTENT="global"> +<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso_8859_1"> +<LINK REL="STYLESHEET" HREF="sun67.css"> +<LINK REL="next" HREF="node229.html"> +<LINK REL="previous" HREF="node197.html"> +<LINK REL="up" HREF="sun67.html"> +<LINK REL="next" HREF="node229.html"> +</HEAD> +<BODY > +<BR> <HR> +<A NAME="tex2html2731" HREF="node229.html"> +<IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="next_motif.gif"></A> +<A NAME="tex2html2729" HREF="sun67.html"> +<IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="up_motif.gif"></A> +<A NAME="tex2html2723" HREF="node227.html"> +<IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="previous_motif.gif"></A> <A HREF="sun67.html#stardoccontents"><IMG ALIGN="BOTTOM" BORDER="0" + SRC="contents_motif.gif"></A> +<BR> +<B> Next:</B> <A NAME="tex2html2732" HREF="node229.html">About this document ...</A> +<BR> +<B>Up:</B> <A NAME="tex2html2730" HREF="sun67.html">SLALIB Positional Astronomy Library</A> +<BR> +<B> Previous:</B> <A NAME="tex2html2724" HREF="node227.html">Numerical Methods</A> +<BR> <HR> <P> +<P><!--End of Navigation Panel--> +<H1><A NAME="SECTION00060000000000000000"> +SUMMARY OF CALLS</A> +</H1> +The basic trigonometrical and numerical facilities are supplied in both single +and double precision versions. +Most of the more esoteric position and time routines use double precision +arguments only, even in cases where single precision would normally be adequate +in practice. +Certain routines with modest accuracy objectives are supplied in +single precision versions only. +In the calling sequences which follow, no attempt has been made +to distinguish between single and double precision argument names, +and frequently the same name is used on different occasions to +mean different things. +However, none of the routines uses a mixture of single and +double precision arguments; each routine is either wholly +single precision or wholly double precision. +<P> +In the classified list, below, +<I>subroutine</I> subprograms are those whose names and argument lists +are preceded by `CALL', whereas <I>function</I> subprograms are +those beginning `R=' (when the result is REAL) or `D=' (when +the result is DOUBLE PRECISION). +<P> +The list is, of course, merely for quick reference; inexperienced +users <B>must</B> refer to the detailed specifications given later. +In particular, <B>don't guess</B> whether arguments are single or +double precision; the result could be a program that happens to +works on one sort of machine but not on another. +<P> +<BR><BIG><B>String Decoding</BIG></B><UL> +<LI> CALL sla_INTIN (STRING, NSTRT, IRESLT, JFLAG) +<BR> +Convert free-format string into integer +<LI> CALL sla_FLOTIN (STRING, NSTRT, RESLT, JFLAG) +<BR> +CALL sla_DFLTIN (STRING, NSTRT, DRESLT, JFLAG) +<BR> +Convert free-format string into floating-point number +<LI> CALL sla_AFIN (STRING, NSTRT, RESLT, JFLAG) +<BR> +CALL sla_DAFIN (STRING, NSTRT, DRESLT, JFLAG) +<BR> +Convert free-format string from deg,arcmin,arcsec to radians</UL> +<BR><BIG><B>Sexagesimal Conversions</BIG></B><UL> +<LI> CALL sla_CTF2D (IHOUR, IMIN, SEC, DAYS, J) +<BR> +CALL sla_DTF2D (IHOUR, IMIN, SEC, DAYS, J) +<BR> +Hours, minutes, seconds to days +<LI> CALL sla_CD2TF (NDP, DAYS, SIGN, IHMSF) +<BR> +CALL sla_DD2TF (NDP, DAYS, SIGN, IHMSF) +<BR> +Days to hours, minutes, seconds +<LI> CALL sla_CTF2R (IHOUR, IMIN, SEC, RAD, J) +<BR> +CALL sla_DTF2R (IHOUR, IMIN, SEC, RAD, J) +<BR> +Hours, minutes, seconds to radians +<LI> CALL sla_CR2TF (NDP, ANGLE, SIGN, IHMSF) +<BR> +CALL sla_DR2TF (NDP, ANGLE, SIGN, IHMSF) +<BR> +Radians to hours, minutes, seconds +<LI> CALL sla_CAF2R (IDEG, IAMIN, ASEC, RAD, J) +<BR> +CALL sla_DAF2R (IDEG, IAMIN, ASEC, RAD, J) +<BR> +Degrees, arcminutes, arcseconds to radians +<LI> CALL sla_CR2AF (NDP, ANGLE, SIGN, IDMSF) +<BR> +CALL sla_DR2AF (NDP, ANGLE, SIGN, IDMSF) +<BR> +Radians to degrees, arcminutes, arcseconds</UL> +<BR><BIG><B>Angles, Vectors and Rotation Matrices</BIG></B><UL> +<LI> R = sla_RANGE (ANGLE) +<BR> +D = sla_DRANGE (ANGLE) +<BR> +Normalize angle into range <IMG WIDTH="25" HEIGHT="25" ALIGN="MIDDLE" BORDER="0" + SRC="img47.gif" + ALT="$\pm \pi$"><LI> R = sla_RANORM (ANGLE) +<BR> +D = sla_DRANRM (ANGLE) +<BR> +Normalize angle into range <IMG WIDTH="43" HEIGHT="25" ALIGN="MIDDLE" BORDER="0" + SRC="img66.gif" + ALT="$0\!-\!2\pi$"><LI> CALL sla_CS2C (A, B, V) +<BR> +CALL sla_DCS2C (A, B, V) +<BR> +Spherical coordinates to <IMG WIDTH="58" HEIGHT="29" ALIGN="MIDDLE" BORDER="0" + SRC="img50.gif" + ALT="$[\,x,y,z\,]$"><LI> CALL sla_CC2S (V, A, B) +<BR> +CALL sla_DCC2S (V, A, B) +<BR> + <IMG WIDTH="58" HEIGHT="29" ALIGN="MIDDLE" BORDER="0" + SRC="img50.gif" + ALT="$[\,x,y,z\,]$"> to spherical coordinates +<LI> R = sla_VDV (VA, VB) +<BR> +D = sla_DVDV (VA, VB) +<BR> +Scalar product of two 3-vectors +<LI> CALL sla_VXV (VA, VB, VC) +<BR> +CALL sla_DVXV (VA, VB, VC) +<BR> +Vector product of two 3-vectors +<LI> CALL sla_VN (V, UV, VM) +<BR> +CALL sla_DVN (V, UV, VM) +<BR> +Normalize a 3-vector also giving the modulus +<LI> R = sla_SEP (A1, B1, A2, B2) +<BR> +D = sla_DSEP (A1, B1, A2, B2) +<BR> +Angle between two points on a sphere +<LI> R = sla_BEAR (A1, B1, A2, B2) +<BR> +D = sla_DBEAR (A1, B1, A2, B2) +<BR> +Direction of one point on a sphere seen from another +<LI> R = sla_PAV (V1, V2) +<BR> +D = sla_DPAV (V1, V2) +<BR> +Position-angle of one <IMG WIDTH="58" HEIGHT="29" ALIGN="MIDDLE" BORDER="0" + SRC="img50.gif" + ALT="$[\,x,y,z\,]$"> with respect to another +<LI> CALL sla_EULER (ORDER, PHI, THETA, PSI, RMAT) +<BR> +CALL sla_DEULER (ORDER, PHI, THETA, PSI, RMAT) +<BR> +Form rotation matrix from three Euler angles +<LI> CALL sla_AV2M (AXVEC, RMAT) +<BR> +CALL sla_DAV2M (AXVEC, RMAT) +<BR> +Form rotation matrix from axial vector +<LI> CALL sla_M2AV (RMAT, AXVEC) +<BR> +CALL sla_DM2AV (RMAT, AXVEC) +<BR> +Determine axial vector from rotation matrix +<LI> CALL sla_MXV (RM, VA, VB) +<BR> +CALL sla_DMXV (DM, VA, VB) +<BR> +Rotate vector forwards +<LI> CALL sla_IMXV (RM, VA, VB) +<BR> +CALL sla_DIMXV (DM, VA, VB) +<BR> +Rotate vector backwards +<LI> CALL sla_MXM (A, B, C) +<BR> +CALL sla_DMXM (A, B, C) +<BR> +Product of two 3x3 matrices +<LI> CALL sla_CS2C6 (A, B, R, AD, BD, RD, V) +<BR> +CALL sla_DS2C6 (A, B, R, AD, BD, RD, V) +<BR> +Conversion of position and velocity in spherical + coordinates to Cartesian coordinates +<LI> CALL sla_CC62S (V, A, B, R, AD, BD, RD) +<BR> +CALL sla_DC62S (V, A, B, R, AD, BD, RD) +<BR> +Conversion of position and velocity in Cartesian + coordinates to spherical coordinates</UL> +<BR><BIG><B>Calendars</BIG></B><UL> +<LI> CALL sla_CLDJ (IY, IM, ID, DJM, J) +<BR> +Gregorian Calendar to Modified Julian Date +<LI> CALL sla_CALDJ (IY, IM, ID, DJM, J) +<BR> +Gregorian Calendar to Modified Julian Date, + permitting century default +<LI> CALL sla_DJCAL (NDP, DJM, IYMDF, J) +<BR> +Modified Julian Date to Gregorian Calendar, + in a form convenient for formatted output +<LI> CALL sla_DJCL (DJM, IY, IM, ID, FD, J) +<BR> +Modified Julian Date to Gregorian Year, Month, Day, Fraction +<LI> CALL sla_CALYD (IY, IM, ID, NY, ND, J) +<BR> +Calendar to year and day in year, permitting century default +<LI> CALL sla_CLYD (IY, IM, ID, NY, ND, J) +<BR> +Calendar to year and day in year +<LI> D = sla_EPB (DATE) +<BR> +Modified Julian Date to Besselian Epoch +<LI> D = sla_EPB2D (EPB) +<BR> +Besselian Epoch to Modified Julian Date +<LI> D = sla_EPJ (DATE) +<BR> +Modified Julian Date to Julian Epoch +<LI> D = sla_EPJ2D (EPJ) +<BR> +Julian Epoch to Modified Julian Date</UL> +<BR><BIG><B>Timescales</BIG></B><UL> +<LI> D = sla_GMST (UT1) +<BR> +Conversion from Universal Time to sidereal time +<LI> D = sla_GMSTA (DATE, UT1) +<BR> +Conversion from Universal Time to sidereal time, rounding errors minimized +<LI> D = sla_EQEQX (DATE) +<BR> +Equation of the equinoxes +<LI> D = sla_DAT (DJU) +<BR> +Offset of Atomic Time from Coordinated Universal Time: TAI-UTC +<LI> D = sla_DT (EPOCH) +<BR> +Approximate offset between dynamical time and universal time +<LI> D = sla_DTT (DJU) +<BR> +Offset of Terrestrial Time from Coordinated Universal Time: TT-UTC +<LI> D = sla_RCC (TDB, UT1, WL, U, V) +<BR> +Relativistic clock correction: TDB-TT</UL> +<BR><BIG><B>Precession and Nutation</BIG></B><UL> +<LI> CALL sla_NUT (DATE, RMATN) +<BR> +Nutation matrix +<LI> CALL sla_NUTC (DATE, DPSI, DEPS, EPS0) +<BR> +Longitude and obliquity components of nutation, and + mean obliquity +<LI> CALL sla_PREC (EP0, EP1, RMATP) +<BR> +Precession matrix (IAU) +<LI> CALL sla_PRECL (EP0, EP1, RMATP) +<BR> +Precession matrix (suitable for long periods) +<LI> CALL sla_PRENUT (EPOCH, DATE, RMATPN) +<BR> +Combined precession/nutation matrix +<LI> CALL sla_PREBN (BEP0, BEP1, RMATP) +<BR> +Precession matrix, old system +<LI> CALL sla_PRECES (SYSTEM, EP0, EP1, RA, DC) +<BR> +Precession, in either the old or the new system</UL> +<BR><BIG><B>Proper Motion</BIG></B><UL> +<LI> CALL sla_PM (R0, D0, PR, PD, PX, RV, EP0, EP1, R1, D1) +<BR> +Adjust for proper motion</UL> +<BR><BIG><B>FK4/FK5/Hipparcos Conversions</BIG></B><UL> +<LI> CALL sla_FK425 ( + R1950, D1950, DR1950, DD1950, P1950, V1950, + R2000, D2000, DR2000, DD2000, P2000, V2000) +<BR> +Convert B1950.0 FK4 star data to J2000.0 FK5 +<LI> CALL sla_FK45Z (R1950, D1950, EPOCH, R2000, D2000) +<BR> +Convert B1950.0 FK4 position to J2000.0 FK5 assuming zero + FK5 proper motion and no parallax +<LI> CALL sla_FK524 ( + R2000, D2000, DR2000, DD2000, P2000, V2000, + R1950, D1950, DR1950, DD1950, P1950, V1950) +<BR> +Convert J2000.0 FK5 star data to B1950.0 FK4 +<LI> CALL sla_FK54Z (R2000, D2000, BEPOCH, + R1950, D1950, DR1950, DD1950) +<BR> +Convert J2000.0 FK5 position to B1950.0 FK4 assuming zero + FK5 proper motion and no parallax +<LI> CALL sla_FK52H (R5, D5, DR5, DD5, RH, DH, DRH, DDH) +<BR> +Convert J2000.0 FK5 star data to Hipparcos +<LI> CALL sla_FK5HZ (R5, D5, EPOCH, RH, DH ) +<BR> +Convert J2000.0 FK5 position to Hipparcos assuming zero Hipparcos + proper motion +<LI> CALL sla_H2FK5 (RH, DH, DRH, DDH, R5, D5, DR5, DD5) +<BR> +Convert Hipparcos star data to J2000.0 FK5 +<LI> CALL sla_HFK5Z (RH, DH, EPOCH, R5, D5, DR5, DD5) +<BR> +Convert Hipparcos position to J2000.0 FK5 assuming zero Hipparcos + proper motion +<LI> CALL sla_DBJIN (STRING, NSTRT, DRESLT, J1, J2) +<BR> +Like sla_DFLTIN but with extensions to accept leading `B' and `J' +<LI> CALL sla_KBJ (JB, E, K, J) +<BR> +Select epoch prefix `B' or `J' +<LI> D = sla_EPCO (K0, K, E) +<BR> +Convert an epoch into the appropriate form - `B' or `J'</UL> +<BR><BIG><B>Elliptic Aberration</BIG></B><UL> +<LI> CALL sla_ETRMS (EP, EV) +<BR> +E-terms +<LI> CALL sla_SUBET (RC, DC, EQ, RM, DM) +<BR> +Remove the E-terms +<LI> CALL sla_ADDET (RM, DM, EQ, RC, DC) +<BR> +Add the E-terms</UL> +<BR><BIG><B>Geographical and Geocentric Coordinates</BIG></B><UL> +<LI> CALL sla_OBS (NUMBER, ID, NAME, WLONG, PHI, HEIGHT) +<BR> +Interrogate list of observatory parameters +<LI> CALL sla_GEOC (P, H, R, Z) +<BR> +Convert geodetic position to geocentric +<LI> CALL sla_POLMO (ELONGM, PHIM, XP, YP, ELONG, PHI, DAZ) +<BR> +Polar motion +<LI> CALL sla_PVOBS (P, H, STL, PV) +<BR> +Position and velocity of observatory</UL> +<BR><BIG><B>Apparent and Observed Place</BIG></B><UL> +<LI> CALL sla_MAP (RM, DM, PR, PD, PX, RV, EQ, DATE, RA, DA) +<BR> +Mean place to geocentric apparent place +<LI> CALL sla_MAPPA (EQ, DATE, AMPRMS) +<BR> +Precompute mean to apparent parameters +<LI> CALL sla_MAPQK (RM, DM, PR, PD, PX, RV, AMPRMS, RA, DA) +<BR> +Mean to apparent using precomputed parameters +<LI> CALL sla_MAPQKZ (RM, DM, AMPRMS, RA, DA) +<BR> +Mean to apparent using precomputed parameters, for zero proper + motion, parallax and radial velocity +<LI> CALL sla_AMP (RA, DA, DATE, EQ, RM, DM) +<BR> +Geocentric apparent place to mean place +<LI> CALL sla_AMPQK (RA, DA, AOPRMS, RM, DM) +<BR> +Apparent to mean using precomputed parameters +<LI> CALL sla_AOP ( + RAP, DAP, UTC, DUT, ELONGM, PHIM, HM, XP, YP, + TDK, PMB, RH, WL, TLR, AOB, ZOB, HOB, DOB, ROB) +<BR> +Apparent place to observed place +<LI> CALL sla_AOPPA ( + UTC, DUT, ELONGM, PHIM, HM, XP, YP, + TDK, PMB, RH, WL, TLR, AOPRMS) +<BR> +Precompute apparent to observed parameters +<LI> CALL sla_AOPPAT (UTC, AOPRMS) +<BR> +Update sidereal time in apparent to observed parameters +<LI> CALL sla_AOPQK (RAP, DAP, AOPRMS, AOB, ZOB, HOB, DOB, ROB) +<BR> +Apparent to observed using precomputed parameters +<LI> CALL sla_OAP ( + TYPE, OB1, OB2, UTC, DUT, ELONGM, PHIM, HM, XP, YP, + TDK, PMB, RH, WL, TLR, RAP, DAP) +<BR> +Observed to apparent +<LI> CALL sla_OAPQK (TYPE, OB1, OB2, AOPRMS, RA, DA) +<BR> +Observed to apparent using precomputed parameters</UL> +<BR><BIG><B>Azimuth and Elevation</BIG></B><UL> +<LI> CALL sla_ALTAZ ( + HA, DEC, PHI, + AZ, AZD, AZDD, EL, ELD, ELDD, PA, PAD, PADD) +<BR> +Positions, velocities <I>etc.</I> for an altazimuth mount +<LI> CALL sla_E2H (HA, DEC, PHI, AZ, EL) +<BR> +CALL sla_DE2H (HA, DEC, PHI, AZ, EL) +<BR> + <IMG WIDTH="41" HEIGHT="29" ALIGN="MIDDLE" BORDER="0" + SRC="img29.gif" + ALT="$[\,h,\delta\,]$"> to <IMG WIDTH="66" HEIGHT="29" ALIGN="MIDDLE" BORDER="0" + SRC="img28.gif" + ALT="$[\,Az,El~]$"><LI> CALL sla_H2E (AZ, EL, PHI, HA, DEC) +<BR> +CALL sla_DH2E (AZ, EL, PHI, HA, DEC) +<BR> + <IMG WIDTH="66" HEIGHT="29" ALIGN="MIDDLE" BORDER="0" + SRC="img28.gif" + ALT="$[\,Az,El~]$"> to <IMG WIDTH="41" HEIGHT="29" ALIGN="MIDDLE" BORDER="0" + SRC="img29.gif" + ALT="$[\,h,\delta\,]$"><LI> CALL sla_PDA2H (P, D, A, H1, J1, H2, J2) +<BR> +Hour Angle corresponding to a given azimuth +<LI> CALL sla_PDQ2H (P, D, Q, H1, J1, H2, J2) +<BR> +Hour Angle corresponding to a given parallactic angle +<LI> D = sla_PA (HA, DEC, PHI) +<BR> + <IMG WIDTH="41" HEIGHT="29" ALIGN="MIDDLE" BORDER="0" + SRC="img29.gif" + ALT="$[\,h,\delta\,]$"> to parallactic angle +<LI> D = sla_ZD (HA, DEC, PHI) +<BR> + <IMG WIDTH="41" HEIGHT="29" ALIGN="MIDDLE" BORDER="0" + SRC="img29.gif" + ALT="$[\,h,\delta\,]$"> to zenith distance</UL> +<BR><BIG><B>Refraction and Air Mass</BIG></B><UL> +<LI> CALL sla_REFRO (ZOBS, HM, TDK, PMB, RH, WL, PHI, TLR, EPS, REF) +<BR> +Change in zenith distance due to refraction +<LI> CALL sla_REFCO (HM, TDK, PMB, RH, WL, PHI, TLR, EPS, REFA, REFB) +<BR> +Constants for simple refraction model (accurate) +<LI> CALL sla_REFCOQ (TDK, PMB, RH, WL, REFA, REFB) +<BR> +Constants for simple refraction model (fast) +<LI> CALL sla_ATMDSP ( TDK, PMB, RH, WL1, REFA1, REFB1, WL2, REFA2, REFB2 ) +<BR> +Adjust refraction constants for colour +<LI> CALL sla_REFZ (ZU, REFA, REFB, ZR) +<BR> +Unrefracted to refracted ZD, simple model +<LI> CALL sla_REFV (VU, REFA, REFB, VR) +<BR> +Unrefracted to refracted <IMG WIDTH="66" HEIGHT="29" ALIGN="MIDDLE" BORDER="0" + SRC="img28.gif" + ALT="$[\,Az,El~]$"> vector, simple model +<LI> D = sla_AIRMAS (ZD) +<BR> +Air mass</UL> +<BR><BIG><B>Ecliptic Coordinates</BIG></B><UL> +<LI> CALL sla_ECMAT (DATE, RMAT) +<BR> +Equatorial to ecliptic rotation matrix +<LI> CALL sla_EQECL (DR, DD, DATE, DL, DB) +<BR> +J2000.0 `FK5' to ecliptic coordinates +<LI> CALL sla_ECLEQ (DL, DB, DATE, DR, DD) +<BR> +Ecliptic coordinates to J2000.0 `FK5'</UL> +<BR><BIG><B>Galactic Coordinates</BIG></B><UL> +<LI> CALL sla_EG50 (DR, DD, DL, DB) +<BR> +B1950.0 `FK4' to galactic +<LI> CALL sla_GE50 (DL, DB, DR, DD) +<BR> +Galactic to B1950.0 `FK4' +<LI> CALL sla_EQGAL (DR, DD, DL, DB) +<BR> +J2000.0 `FK5' to galactic +<LI> CALL sla_GALEQ (DL, DB, DR, DD) +<BR> +Galactic to J2000.0 `FK5'</UL> +<BR><BIG><B>Supergalactic Coordinates</BIG></B><UL> +<LI> CALL sla_GALSUP (DL, DB, DSL, DSB) +<BR> +Galactic to supergalactic +<LI> CALL sla_SUPGAL (DSL, DSB, DL, DB) +<BR> +Supergalactic to galactic</UL> +<BR><BIG><B>Ephemerides</BIG></B><UL> +<LI> CALL sla_DMOON (DATE, PV) +<BR> +Approximate geocentric position and velocity of the Moon +<LI> CALL sla_EARTH (IY, ID, FD, PV) +<BR> +Approximate heliocentric position and velocity of the Earth +<LI> CALL sla_EVP (DATE, DEQX, DVB, DPB, DVH, DPH) +<BR> +Barycentric and heliocentric velocity and position of the Earth +<LI> CALL sla_MOON (IY, ID, FD, PV) +<BR> +Approximate geocentric position and velocity of the Moon +<LI> CALL sla_PLANET (DATE, NP, PV, JSTAT) +<BR> +Approximate heliocentric position and velocity of a planet +<LI> CALL sla_RDPLAN (DATE, NP, ELONG, PHI, RA, DEC, DIAM) +<BR> +Approximate topocentric apparent place of a planet +<LI> CALL sla_PLANEL ( + DATE, JFORM, EPOCH, ORBINC, ANODE, PERIH, + AORQ, E, AORL, DM, PV, JSTAT) +<BR> +Heliocentric position and velocity of a planet, asteroid or + comet, starting from orbital elements +<LI> CALL sla_PLANTE ( + DATE, ELONG, PHI, JFORM, EPOCH, ORBINC, ANODE, + PERIH, AORQ, E, AORL, DM, RA, DEC, R, JSTAT) +<BR> +Topocentric apparent place of a Solar-System object whose + heliocentric orbital elements are known +<LI> CALL sla_PV2EL ( + PV, DATE, PMASS, JFORMR, JFORM, EPOCH, ORBINC, + ANODE, PERIH, AORQ, E, AORL, DM, JSTAT) +<BR> +Orbital elements of a planet from instantaneous position and velocity +<LI> CALL sla_PERTEL ( + JFORM, DATE0, DATE1, + EPOCH0, ORBI0, ANODE0, PERIH0, AORQ0, E0, AM0, + EPOCH1, ORBI1, ANODE1, PERIH1, AORQ1, E1, AM1, + JSTAT) +<BR> +Update elements by applying perturbations +<LI> CALL sla_EL2UE ( + DATE, JFORM, EPOCH, ORBINC, ANODE, + PERIH, AORQ, E, AORL, DM, + U, JSTAT) +<BR> +Transform conventional elements to universal elements +<LI> CALL sla_UE2EL ( + U, JFORMR, + JFORM, EPOCH, ORBINC, ANODE, PERIH, + AORQ, E, AORL, DM, JSTAT) +<BR> +Transform universal elements to conventional elements +<LI> CALL sla_PV2UE (PV, DATE, PMASS, U, JSTAT) +<BR> +Package a position and velocity for use as universal elements +<LI> CALL sla_UE2PV (DATE, U, PV, JSTAT) +<BR> +Extract the position and velocity from universal elements +<LI> CALL sla_PERTUE (DATE, U, JSTAT) +<BR> +Update universal elements by applying perturbations +<LI> R = sla_RVEROT (PHI, RA, DA, ST) +<BR> +Velocity component due to rotation of the Earth +<LI> CALL sla_ECOR (RM, DM, IY, ID, FD, RV, TL) +<BR> +Components of velocity and light time due to Earth orbital motion +<LI> R = sla_RVLSRD (R2000, D2000) +<BR> +Velocity component due to solar motion wrt dynamical LSR +<LI> R = sla_RVLSRK (R2000, D2000) +<BR> +Velocity component due to solar motion wrt kinematical LSR +<LI> R = sla_RVGALC (R2000, D2000) +<BR> +Velocity component due to rotation of the Galaxy +<LI> R = sla_RVLG (R2000, D2000) +<BR> +Velocity component due to rotation and translation of the + Galaxy, relative to the mean motion of the local group</UL> +<BR><BIG><B>Astrometry</BIG></B><UL> +<LI> CALL sla_S2TP (RA, DEC, RAZ, DECZ, XI, ETA, J) +<BR> +CALL sla_DS2TP (RA, DEC, RAZ, DECZ, XI, ETA, J) +<BR> +Transform spherical coordinates into tangent plane +<LI> CALL sla_V2TP (V, V0, XI, ETA, J) +<BR> +CALL sla_DV2TP (V, V0, XI, ETA, J) +<BR> +Transform <IMG WIDTH="58" HEIGHT="29" ALIGN="MIDDLE" BORDER="0" + SRC="img50.gif" + ALT="$[\,x,y,z\,]$"> into tangent plane coordinates +<LI> CALL sla_DTP2S (XI, ETA, RAZ, DECZ, RA, DEC) +<BR> +CALL sla_TP2S (XI, ETA, RAZ, DECZ, RA, DEC) +<BR> +Transform tangent plane coordinates into spherical coordinates +<LI> CALL sla_DTP2V (XI, ETA, V0, V) +<BR> +CALL sla_TP2V (XI, ETA, V0, V) +<BR> +Transform tangent plane coordinates into <IMG WIDTH="58" HEIGHT="29" ALIGN="MIDDLE" BORDER="0" + SRC="img50.gif" + ALT="$[\,x,y,z\,]$"><LI> CALL sla_DTPS2C (XI, ETA, RA, DEC, RAZ1, DECZ1, RAZ2, DECZ2, N) +<BR> +CALL sla_TPS2C (XI, ETA, RA, DEC, RAZ1, DECZ1, RAZ2, DECZ2, N) +<BR> +Get plate centre from star <IMG WIDTH="42" HEIGHT="29" ALIGN="MIDDLE" BORDER="0" + SRC="img3.gif" + ALT="$[\,\alpha,\delta\,]$"> and tangent plane coordinates +<LI> CALL sla_DTPV2C (XI, ETA, V, V01, V02, N) +<BR> +CALL sla_TPV2C (XI, ETA, V, V01, V02, N) +<BR> +Get plate centre from star <IMG WIDTH="58" HEIGHT="29" ALIGN="MIDDLE" BORDER="0" + SRC="img50.gif" + ALT="$[\,x,y,z\,]$"> and tangent plane coordinates +<LI> CALL sla_PCD (DISCO, X, Y) +<BR> +Apply pincushion/barrel distortion +<LI> CALL sla_UNPCD (DISCO, X, Y) +<BR> +Remove pincushion/barrel distortion +<LI> CALL sla_FITXY (ITYPE, NP, XYE, XYM, COEFFS, J) +<BR> +Fit a linear model to relate two sets of <IMG WIDTH="42" HEIGHT="29" ALIGN="MIDDLE" BORDER="0" + SRC="img20.gif" + ALT="$[\,x,y\,]$"> coordinates +<LI> CALL sla_PXY (NP, XYE, XYM, COEFFS, XYP, XRMS, YRMS, RRMS) +<BR> +Compute predicted coordinates and residuals +<LI> CALL sla_INVF (FWDS, BKWDS, J) +<BR> +Invert a linear model +<LI> CALL sla_XY2XY (X1, Y1, COEFFS, X2, Y2) +<BR> +Transform one <IMG WIDTH="42" HEIGHT="29" ALIGN="MIDDLE" BORDER="0" + SRC="img20.gif" + ALT="$[\,x,y\,]$"><LI> CALL sla_DCMPF (COEFFS, XZ, YZ, XS, YS, PERP, ORIENT) +<BR> +Decompose a linear fit into scales <I>etc.</I></UL> +<BR><BIG><B>Numerical Methods</BIG></B><UL> +<LI> CALL sla_COMBN (NSEL, NCAND, LIST, J) +<BR> +Next combination (subset from a specified number of items) +<LI> CALL sla_PERMUT (N, ISTATE, IORDER, J) +<BR> +Next permutation of a specified number of items +<LI> CALL sla_SMAT (N, A, Y, D, JF, IW) +<BR> +CALL sla_DMAT (N, A, Y, D, JF, IW) +<BR> +Matrix inversion and solution of simultaneous equations +<LI> CALL sla_SVD (M, N, MP, NP, A, W, V, WORK, JSTAT) +<BR> +Singular value decomposition of a matrix +<LI> CALL sla_SVDSOL (M, N, MP, NP, B, U, W, V, WORK, X) +<BR> +Solution from given vector plus SVD +<LI> CALL sla_SVDCOV (N, NP, NC, W, V, WORK, CVM) +<BR> +Covariance matrix from SVD +<LI> R = sla_RANDOM (SEED) +<BR> +Generate pseudo-random real number in the range <IMG WIDTH="72" HEIGHT="25" ALIGN="MIDDLE" BORDER="0" + SRC="img145.gif" + ALT="$0 \leq x < 1$"><LI> R = sla_GRESID (S) +<BR> +Generate pseudo-random normal deviate (<IMG WIDTH="15" HEIGHT="14" ALIGN="BOTTOM" BORDER="0" + SRC="img251.gif" + ALT="$\equiv$"> `Gaussian residual')</UL> +<BR><BIG><B>Real-time</BIG></B><UL> +<LI> CALL sla_WAIT (DELAY) +<BR> +Interval wait</UL> +<BR> <HR> +<A NAME="tex2html2731" HREF="node229.html"> +<IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="next_motif.gif"></A> +<A NAME="tex2html2729" HREF="sun67.html"> +<IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="up_motif.gif"></A> +<A NAME="tex2html2723" HREF="node227.html"> +<IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="previous_motif.gif"></A> <A HREF="sun67.html#stardoccontents"><IMG ALIGN="BOTTOM" BORDER="0" + SRC="contents_motif.gif"></A> +<BR> +<B> Next:</B> <A NAME="tex2html2732" HREF="node229.html">About this document ...</A> +<BR> +<B>Up:</B> <A NAME="tex2html2730" HREF="sun67.html">SLALIB Positional Astronomy Library</A> +<BR> +<B> Previous:</B> <A NAME="tex2html2724" HREF="node227.html">Numerical Methods</A> +<BR> <HR> <P> +<P><!--End of Navigation Panel--> +<ADDRESS> +<I>SLALIB --- Positional Astronomy Library<BR>Starlink User Note 67<BR>P. T. Wallace<BR>12 October 1999<BR>E-mail:ptw@star.rl.ac.uk</I> +</ADDRESS> +</BODY> +</HTML> |