MATLAB Versions of NOVAS: anmp (a) - File Exchange

Code covered by the BSD License

Highlights from
MATLAB Versions of NOVAS

aberat (pos1, ve, tlight) this function corrects position vector for aberration of light.
angles (pos) this function converts a vector to angular quantities
anmp (a)
applan (tjd, l, n) geocentric place of the sun, moon and planets
apstar (tjd, n, rai, deci, pm... apparent place of a star
catran ... this function transforms a star's catalog quantities for
celpol (tjd, itype, dpole1, d... this function allows for the specification of celestial pole
celter (tjdh, tjdl, xp, yp, v... this function rotates a vector from the celestial to the
ciobas (tjd, racio, k) this function returns the orthonormal basis vectors, with
cioloc (tjd) this function returns the location of the celestial
ciotio
dlight (pos1, pe) this function returns the difference in light-time, for a star,
eceq (tjd, icoord, pos1) this function converts an ecliptic position vector to
eect2000 (date1, date2) equation of the equinoxes complementary terms, consistent with
eqec (tjd, icoord, pos1) this function converts an equatorial position vector to
eqecl (tjd, icoord, ra, dec) this function converts right ascension and declination
eqinox
eqxra (tjd, k) this function computes the intermediate right ascension
erot (date1, date2) this function returns the value of the earth rotation angle
etilt (tjd) this function computes quantities related to the orientation
etilt1 (tjd) this function computes quantities related to the orientation
frame (pos1, k) this function transforms a vector from the dynamical reference
funarg (t) this function computes fundamental arguments (mean elements)
gdate (jdate) convert Julian date to Gregorian (calendar) date
geocen (pos1, pe) this function moves the origin of coordinates from the
geopos (tjd, locatn, observ) this function computes the geocentric position and velocity
getdt this entry returns the current value of delta-t
getmod this function returns the 'mode' value, which
grvd (pos1, pobs, pbody, rmas... this function corrects position vector for the deflection
grvdef (tjd, loc, pos1, pobs) this function computes the total gravitational deflection of
hiacc
idss_novas (name) this function returns the id number of a solar system body
jd2str(jdate) convert Julian date to string equivalent
julian (month, day, year) Julian date
limang (pos1, poso) this function determines the angle of an object above or below
littim (tjd, idbody, pose, tl... this function computes the position of a solar system body,
loacc
nod (t) this function returns the values for nutation in longitude and
novas_times (tdbjd) this function computes the terrestrial time (tt) julian date
nut2000_lp (t) low precison nutation based on iau 2000a
nut2000a (date1, date2) nutation based on iau 2000a theory
nut2000k (date1, date2) nutation based on the iau 2000k theory
nutate (tjd, pos1) this function nutates equatorial rectangular coordinates from
obliq(t) function to compute mean obliquity of the ecliptic in arcseconds
place (tjd, object, locatn, i... this function computes the apparent direction of a star or solar
preces (tjd1, pos1, tjd2) this function precesses equatorial rectangular coordinates from
propmo (tjd1, pos1, vel1, tjd... this function applies proper motion, including foreshortening
radvl (pos, vel, velobs, star... this function predicts the radial velocity of the observed
resume
setdt (delt) this function allows for the specification of the delta-t value
setmod (mode) this function allows the user to specify the 'mode' value,
sidtim (tjdh, tjdl, k) this function computes the greenwich sidereal time
sidtim1 (tjdh, tjdl, k) this function computes the greenwich sidereal time
solsys (tjd, body, origin) purpose
spin (angl, pos1) this function transforms a vector from one coordinate system
tercel (tjdh, tjdl, xp, yp, v... this function rotates a vector from the terrestrial to the
terra (glon, glat, ht, st) this function computes the position and velocity vectors of
times_novas (tdbjd) this function computes the terrestrial time (tt) julian date
tpplan (ujd, ttjd, object, gl... topocentric place of the sun, moon or planet
tpstar (ujd, ttjd, glon, glat... topocentric place of a star
vectrs (ra, dec, pmra, pmdec,... this function converts angular quantities related to a star's
wobble (tjd, x, y, pos1) this function corrects a vector in the itrs (a rotating earth-
View all files

from MATLAB Versions of NOVAS by David Eagle
Several NOVAS Fortran subroutines have been ported to MATLAB.

anmp (a)
function w = anmp (a) % normalize angle into the range -pi <= a < +pi. % ported from NOVAS 3.0 %%%%%%%%%%%%%%%%%%%%%%% w = mod(a, 2.0 * pi); if (abs(w) >= pi) w = w - sign(a) * (2.0 * pi); end

Highlights from MATLAB Versions of NOVAS

Highlights from
MATLAB Versions of NOVAS