What does the LY number shown in the Power overview mean?

The overview screen of a Power has tabs for preparation, expansion and control. Each of these tabs has a list of systems that are currently being prepared, expanded to and fortified. Next to each system there is a LY number. Up until now I assumed that this number indicated the distance from the Power's HQ, since that distance is significant when it comes to the effort that has to be spent to prepare/expand/fortify. Today I realized that my assumption was wrong.

For instance, Karsuki Ti is 16.42 LY away from Cubeo (Aisling Duval's HQ), but the control tab in the Power overview screen shows the number 85.5 LY.

So what exactly does this mysterious LY number mean?

(FWIW, I consulted the Power Play manual, but could not find any information)

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What does the LY number shown in the Power overview mean? - Side view of crop anonymous male athlete preparing to lift barbell with stainless steel bar and plastic collar in daylight

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What does the LY number shown in the Power overview mean? - White Post Lamp

What is the true meaning of power?

power, authority, jurisdiction, control, command, sway, dominion mean the right to govern or rule or determine. power implies possession of ability to wield force, authority, or influence. the power to mold public opinion authority implies power for a specific purpose within specified limits.

What are DAX formulas?

Data Analysis Expressions (DAX) is a formula expression language used in Analysis Services, Power BI, and Power Pivot in Excel. DAX formulas include functions, operators, and values to perform advanced calculations and queries on data in related tables and columns in tabular data models.

Which of the following DAX functions return a table?

DAX Filter functions return a column or a table or values related to the current row. You can use DAX Filter functions to return specific data types, look up values in related tables and filter by related values. DAX Lookup functions work by using tables and relationships between them.

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