No. Those distances have nothing to do with how long it takes for a planet to orbit their sun
May be I need to be more clear.
1 LY for humains is equal to 9.46 trillion kilometers or 5.88 trillion miles or 0.306 parsecs.
It is the distance traveled by light during one terrestrial year.
If the earth revolved more or less quickly around the sun, this distance would be less or greater. Right ?
If you look at this image, you see MEROPE and COL 70 SECTOR FY-N c21-3, and between the two systems a binary code : --| -|- -|| which is equal to 123
We know that the distance between MEROPE and COL 70 SECTOR FY-N c21-3 is equal to 871.02 LY, but on this image, the distance indicated is 123
So if 123 is a distance, and it's calculated by a creature that doesn't inhabit the earth. His time frame is different from ours. For her, a light year does not correspond to OUR light year, because her planet does not orbit around its sun at the same speed as ours.
If the Thargoid homeworld orbit around it sun in 2586.5 human days, then the distance between MEROPE and COL 70 SECTOR FY-N c21-3 is 123 Light Years. Not a humain Year, but a Thargoid year.
So if the Thargoids wrote that the distance between MEROPE and COL 70 SECTOR FY-N c21-3 is equal to 123 and the unit is a thargoid LY, then the Thargoid homeworld should orbit around it sun in 2586.5 human days.
Now, if there is a system that is at equal distance between MEROPE and COL 70 SECTOR FY-N c21-3, and this system has a planet that orbits its star in 2586.5 days, then we have a great chance to have found the planet of origin of the Thargoids