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HORIZONS Web-Interface
This tool provides a web-based limited interface to JPL's HORIZONS system which can be used to generate ephemerides for solar-system bodies. Full access to HORIZONS features is available via the primary telnet interface. HORIZONS system news shows recent changes and improvements. A web-interface tutorial is available to assist new users.

Current Settings

Ephemeris Type [change] :  OBSERVER
Target Body [change] :  Mars [499]
Observer Location [change] :  Geocentric [500]
Time Span [change] :  Start=2021-03-03, Stop=2021-04-02, Step=1 d
Table Settings [change] :  defaults
Display/Output [change] :  default (formatted HTML)
  ERROR:
  • sorry, session ID '1992bab21b35a4cd296b6e5ce31c00dd' has expired
  • a new ID has been issued, 6c138c005dd728621e1466bdbf3375e5
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  • please check your input and try again

Display/Output Settings

Select the desired display/output option from the list below. Note that any errors will also be displayed using this format.

Ephemeris results will be shown in a normal formatted web page.
Ephemeris results will be displayed as plain text (ASCII).
Ephemeris results will be saved to a local file (this assumes your browser supports file downloads)

   
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FirstGov 2021-Mar-03 16:22 UT
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