HelioWeb

Heliocentric Trajectories for User specified Date and Position
This interface calculats heliocentric distances and elevation and longitude angles for Sun-centered Solar Ecliptic,
Inertial, and Rotating (Heliographic) Coordinates for user specified Position in the Solar Ecliptic System
Cartesians components:( X,Y,Z, km.) and Date for Equinox Epoch specified by user
Like for HELIOWeb all output is given in the Polar Coordinate System (AU, angles in degrees) for Equinox Epoch: "Mean of date".

Please Fill the Form below, then Submit Query to request parameters

* Select Date/Time: Year: Day of year: Hour:

* Select X, Y, Z position (km) in the Solar Ecliptic System:  
X    Y    Z
Select Equinox Epoch for your input

Optional object: Name of additional S/C or object 2*:
*In this case the difference of between coordinates of the sun and specified point and the sun and selected object,
and Distance between the point and selected object will be calculated.
( Time spans for all Objects are at main HELIOWeb page heli.html ).

*Description of coordinate systems
* Geocentric orbits from SSCWeb

If you have any question/comments about WWW access to the ephemerides data,
contact: Dr. Natalia Papitashvili, E-mail:Natalia.E.Papitashvili@nasa.gov,
Mail Code 672, NASA/Goddard Spaceflight Center, Greenbelt, MD 20771

NASA Official: Robert Candey, Head of the Space Physics Data Facility