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### Highlights from MATLAB Versions of NOVAS

• aberatthis function corrects position vector for aberration of light.
• anglesthis function converts a vector to angular quantities
• anmp
• applangeocentric place of the sun, moon and planets
• apstarapparent place of a star
• catranthis function transforms a star's catalog quantities for
• celpolthis function allows for the specification of celestial pole
• celterthis function rotates a vector from the celestial to the
• ciobasthis function returns the orthonormal basis vectors, with
• ciolocthis function returns the location of the celestial
• ciotio
• dlightthis function returns the difference in light-time, for a star,
• eceqthis function converts an ecliptic position vector to
• eect2000equation of the equinoxes complementary terms, consistent with
• eqecthis function converts an equatorial position vector to
• eqeclthis function converts right ascension and declination
• eqinox
• eqxrathis function computes the intermediate right ascension
• erotthis function returns the value of the earth rotation angle
• etiltthis function computes quantities related to the orientation
• etilt1this function computes quantities related to the orientation
• framethis function transforms a vector from the dynamical reference
• funargthis function computes fundamental arguments (mean elements)
• gdateconvert Julian date to Gregorian (calendar) date
• geocenthis function moves the origin of coordinates from the
• geoposthis function computes the geocentric position and velocity
• getdtthis entry returns the current value of delta-t
• getmodthis function returns the 'mode' value, which
• grvdthis function corrects position vector for the deflection
• grvdefthis function computes the total gravitational deflection of
• hiacc
• idss_novasthis function returns the id number of a solar system body
• jd2str(jdate)convert Julian date to string equivalent
• julianJulian date
• limangthis function determines the angle of an object above or below
• littimthis function computes the position of a solar system body,
• loacc
• nodthis function returns the values for nutation in longitude and
• novas_timesthis function computes the terrestrial time (tt) julian date
• nut2000_lplow precison nutation based on iau 2000a
• nut2000anutation based on iau 2000a theory
• nut2000knutation based on the iau 2000k theory
• nutatethis function nutates equatorial rectangular coordinates from
• obliq(t)function to compute mean obliquity of the ecliptic in arcseconds
• placethis function computes the apparent direction of a star or solar
• precesthis function precesses equatorial rectangular coordinates from
• propmothis function applies proper motion, including foreshortening
• radvlthis function predicts the radial velocity of the observed
• resume
• setdtthis function allows for the specification of the delta-t value
• setmodthis function allows the user to specify the 'mode' value,
• sidtimthis function computes the greenwich sidereal time
• sidtim1this function computes the greenwich sidereal time
• solsyspurpose
• spinthis function transforms a vector from one coordinate system
• tercelthis function rotates a vector from the terrestrial to the
• terrathis function computes the position and velocity vectors of
• times_novasthis function computes the terrestrial time (tt) julian date
• tpplantopocentric place of the sun, moon or planet
• tpstartopocentric place of a star
• vectrsthis function converts angular quantities related to a star's
• wobblethis function corrects a vector in the itrs (a rotating earth-
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# MATLAB Versions of NOVAS

### David Eagle (view profile)

27 Nov 2012 (Updated )

Several NOVAS Fortran subroutines have been ported to MATLAB.

aberat