Virtual observatory - Ephemerides

Using this service one can get ephemerides for Sun, Moon, and major planets for any date and time between 1901 and 2100 and for any geographical place.

This service is a www-version of a subset of functions provided in xephem written by E.C. Downey, enhanced with some new functions. The output is tabulated (plain ASCII or HTML table) and able for further processing.

Selection Form

Please select an object

Sun Moon
Mercury Venus Mars Jupiter
Saturn Uranus Neptune Pluto

You are asked to fill the input fields

If your browser is able to run JavaScript code and this function is enabled (this is highly recommended to check the inputs on the client side), you can decrease or increase the field values by pressing + or - buttons right from the actual input field.

Date: [yyyy/mm/dd]
UT: [hh:mm:ss]
Time zone: [hh] East West
Longitude: [ddd:mm:ss] East West
Latitude: [dd:mm:ss] North South
Stepsize: [hh:mm:ss]
No. of steps: Epoch:
Angle output format
Time output format

Select the columns to be calculated and displayed

seq
UD UT ET DT LD LT
Week Day Dow JD GST LST
EqTime Obj
Cns RA HA Dec Az Alt
HeLong HeLat GLong GLat EaDst EaLght
SnDst SnLght Elong Diam VMag Phase
RiseTm RiseAz TrnTm TrnAl SetTm SetAz
HrsUp Air Nameday Note
column information

Output format

ASCII table HTML table

Some pre-calculated examples

Many thanks for J. Kovács who made this page available!

ToC