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Knowledge Base

Planetary Decans


The standard Ephemeris is broken into 12 sections commonly known as the Zodiac, or houses (Aries, Leo, etc) which each cover a 30-degree section. Planetary Decans take these 30-degree houses and divides them by 3, giving you 36 sections made up of 10 degrees each.


To apply the Planetary Decans tool to your chart, select the Tools menu located at the top of the Optuma screen.

From the Astro tools, select Planetary Decans.

Left-click on the chart and the Planetary Decans Orbs / Symbols will display on the chart.

Actions & Properties


Add to Toolbar: Click this action to add the selected custom Planetary Decans to your custom toolbar.

Apply Settings to All: When multiple Planetary Decans tools have been applied to a chart, page or workbook, this action can be used to apply the settings of the one selected to other instances of the tool. This is a great time saver if an adjustment is made to the tool – such as hiding or adding levels- as this allows all the other Planetary Decans tools in the chart, page or entire workbook to be updated instantly.

Copy Data to Clipboard: Will copy the tool’s values to the clipboard which can then be inserted into a spreadsheet, for example, allowing for further analysis.

Copy Tool: Allows you to copy the selected Planetary Decans, which can then be pasted onto a different chart window.

Move to Back: If the symbols of the tool are displaying in front of other tools or indicators clicking this action will move the symbols view to the background.

Move to Front: If the symbols of the tool are displaying behind other tools or indicators on the chart, clicking this action will bring the symbols to the forefront.

Restore Default Settings: Click this action if you have adjusted the default settings of the Planetary Decans, and wish to return to the standard properties originally installed with Optuma.

Save Settings as Default: If you have adjusted any of the Planetary Decans Properties (colour, for example) you can save the adjustments as your new default setting. Each time you apply a new Planetary Decans to a chart, the tool will display using the new settings.

Set Time Alert: Sets a time alert for the selected symbol. For more information on Time Alerts, click  here.

Delete: Delete the Planetary Decans tool from the chart.


Tool Name: Allows you to adjust the name of the tool, as it’s displayed in the Structure Panel.

Planet: Sets what planet will be used for the Planetary Decans calculation.

Sign – Ruler: Allows you to select what Zodiac signs will be displayed for the Planetary Decans.

Decans Style: Select between Triplicity or Chaldean.

Geo / Helio / Sidereal: This setting allows you to change the Planetary Decans setting between GeoCentric, HelioCentric and Sidereal.

GMT Offset: Use this option to adjust the Planetary Decans time zone setting for a specific market. Select the required GMT setting and the
Planetary Decans will automatically update.

Coordinate Type:
Select between Ecliptic (Longitude & Latitude) or Equatorial (Right Ascension & Declination).

Orb Properties: Expands to display the properties of the Orb, the following items can be adjusted:
  • Show Orbs - Enables you to show or hide the orbs.
  • Orb - This setting allows you to adjust the acceptable variance for the Planetary Decans.
  • Orb Transparency - Use this slider bar to adjust the transparency of the Orb. Moving the slider to the left will increase the transparency.
  • Full-Size Height - When selected the Orb will extend the full length of the chart, but not across indicators that are displayed in a separate view such as volume.
  • Orb Over All Views - When selected the Orb will extend the full length of the chart and will also extend to tools that are displayed in separate views, e.g. volume.

Show Symbols: When selected the Planetary Decans symbols will be displayed on the chart.

Position: Use this option to adjust the position of the Planetary Decans symbols. The following positions can be selected: High, Low, Top, Bottom or Floating.

Symbol Size: Allows you to adjust the size of the Planetary Decans symbols. Moving the slider bar to the right increases the Symbol size.

Symbol Colour: Allows you to adjust the colour of the Planetary Decans colour.

Stack Symbols: When multiple Planetary Decans symbols are added to a chart, this property allows you to stack them instead of having them appear in front of each other.

Tool Transparency: Use this slider bar to adjust the transparency of the tool. Moving the slider to the left will increase the transparency of the tool.

Visible: Un-tick this checkbox to hide the tool from the chart.

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