HelioWeb


Heliocentric Trajectories for Selected Spacecraft, Planets, and Comets
Positions are available in Solar Ecliptic (SE) and Heliographic (HG) (rotating and inertial) systems for 12 Spacecraft, 2 Planets and 8 Comets. They can be obtained at desired time period, time resolution and equinox epochs.Positions for additional planets are available from the option near the bottom of this page.
These codes were written to support multi-spacecraft studies of solar wind and cosmic ray phenomena; accuracy is tailored to facilitate these studies only. Radial distances should be good at an accuracy of 1%, and angles at 0.1 degree. More accurate data may be available at the JPL (Pasadena,CA) and US Naval Observatory, Washington, DC.
NSSDC has also created a series of Heliospheric Trajectory DATA BOOKS whose text, tables, and plots are accessible.
* DESCRIPTION OF COORDINATE SYSTEMS

List of Heliospheric Objects and their time spans available

 
CASSINI         1997  289 - 2004  183  PIONEER 11      1973  096 - 1999  365
EARTH (IMP8,etc)1965  001 - 2015  365  PHOBOS 2        1988  195 - 1989  030 
GALILEO         1989  299 - 2015  365  SAKIGAKE        1985  021 - 1997  365 
GIOTTO          1992  001 - 1992  366  SUISEI          1989  001 - 1999  365 
HELIOS 1        1974  345 - 1985  365  ULYSSES         1990  292 - 2015  343 
HELIOS 2        1976  001 - 1985  365  VENUS (PVO)     1978  001 - 1999  365 
ICE             1984  001 - 1999  365  VOYAGER 1       1977  252 - 2015  343  
PIONEER 10      1972  063 - 2005  365  VOYAGER 2       1977  237 - 2015  343


COMET GRIGG-SKJ 1992  001 - 1993  001  COMET BORRELLY  2000  001 - 2002  365 
COMET H-M-P     1996  001 - 1996  062  COMET WILD 2    2002  001 - 2004  366 
COMET HALE-BOPP 1997  001 - 1997  365  COMET HYAKUTAKE 1995  244 - 1996  366 
COMET HALLEY    1984  001 - 1987  365  COMET GACOBINI-ZINNER 1984  001 - 1986  365
  

Note: Program lists up to 1461 positions. Default time resolution is one day.

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


Name of S/C or object:
Output coordinate system:
Start year: Start day: Stop year: Stop day:
Time resolution (in days): Equinox Epoch:

* HELIOSPHERIC PLANET COORDINATES

* Go to the NSSDC home page


[Logo] If you have any question/comments about the ephemerides data, contact: R. Parthasarathy, E-mail: sardi@nssdca.gsfc.nasa.gov, about WWW access to the ephemerides data, contact: Dr. Natalia Papitashvili, E-mail:natasha@nssdca.gsfc.nasa.gov National Space Science Data Center, Mail Code 632, NASA/Goddard Spaceflight Center, Greenbelt, MD 20771

NASA Official: Dr. Robert McGuire, Head of the Space Physics Data Facility
Last Updated 12 April 2004,NEP