The IStar type exposes the following members.

Methods

  NameDescription
Public methodGetApparentPosition
Get an apparent position for a given time
Public methodGetAstrometricPosition
Get an astrometric position for a given time
Public methodGetLocalPosition
Get a local position for a given site and time
Public methodGetTopocentricPosition
Get a topocentric position for a given site and time
Public methodGetVirtualPosition
Get a virtual position at a given time
Public methodSet
Initialize all star properties with one call
Public methodSetHipparcos
Initialise all star properties in one call using Hipparcos data. Transforms to FK5 standard used by NOVAS.

Properties

  NameDescription
Public propertyCatalog
Three character catalog code for the star's data
Public propertyDeclination
Mean catalog J2000 declination coordinate (degrees)
Public propertyDeltaT
The value of delta-T (TT - UT1) to use for reductions.
Public propertyEarthEphemeris
Ephemeris object used to provide the position of the Earth.
Public propertyName
The catalog name of the star (50 char max)
Public propertyNumber
The catalog number of the star
Public propertyParallax
Catalog mean J2000 parallax (arcsec)
Public propertyProperMotionDec
Catalog mean J2000 proper motion in declination (arcsec/century)
Public propertyProperMotionRA
Catalog mean J2000 proper motion in right ascension (sec/century)
Public propertyRadialVelocity
Catalog mean J2000 radial velocity (km/sec)
Public propertyRightAscension
Catalog mean J2000 right ascension coordinate (hours)

See Also