Natural Satellites Service. Uploading observation of mutual events (v.20.11.20)
This is a tool for automatic input of the photometric observations of the mutual occultations and eclipses
of the galilean satellites of Jupiter in 2021 in the database.
To start entering your data, send email to
to obtain an unique operator ID.
To see your previously entered data
Input your operator ID and
Event observation ID
                                   (Leave this field blank to get the list of your entered observations)
Select: show first and last lines only    show all the data   
Then press      

To input your results of observation for one mutual phenomenon
enter or choose the following information and press Submit (below).
You will receive on a separate page an unique identification code for this observation (Event observation ID) followed by your data.
Remember this Event observation ID for subsequent operations.
Input your operator ID
Event identification   ( See explanation )
  • Event date and beginning time:
    year month day hour minute
  • Event:
  • Type of the photometric measurement:
    occultation    eclipsed satellite only    eclipsed and eclipsing together   
Site identification   ( See explanation )
  • Name or identifier of the site of observation:
       Note: Each different telescope identifies a different Site of observation (name must be without blanks).
  • Select an action with the description of the site (coordinates and telescope parameters):
    - take these data from the database (Following values in the fields will be ignored. No need to enter anything).
    - input or update these data by completing the following fields.
       (following values in the fields will set or update the parameters)
    Description of the site of observation (coordinates and telescope parameters).
    Disregard this section if you take these data from the database.
    Observatory IAU code:    (put XXX if not available)
    Site geographic coordinates:
    Longitude =   deg   min   sec
       Latitude =   deg   min   sec
        Elevation   m
    Type of the telescope:    Designation:
      Diameter cm     Focal length: cm
    Note: Telescope Designation must be without blanks.
Observation parameters   ( See explanation )
  • Filter: or check if no filter.
  • Used receptor:    Designation:
    Receptor description:
  • Observational conditions (seeing, weather, ...):
    Note: Receptor Designation must be without blanks.
Observers identification   ( See explanation )
  • Enter observers names and affiliations.
    For each observer input: surname, first name, affiliation (observers separator is ';').
  • E-mail address for contacts:
    Name of coordinating person:
Results for one observation (of one event)   ( See explanation )
  • Choose format of the date  
  • Choose type of the photometric value
Enter one or more series of your photometric measurements. Each series begins with a line of the form
* N1 N2 ... (examples:   * 0   ,   * 0 4  ,   * 1 3
followed by lines of data where each line contains one date followed by corresponding photometric values
Here * corresponds to the column of the time and N1, N2, ... are the numbers of satellites corresponding to columns of the photometric measurements. Use number 0 for the event.
The maximum number of lines is limited to 10000.
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