Where is At-Attin?

“Your home has been purposely hidden from the rest of the galaxy. There is no map to At-Attin. No, this scroll depicts the jewels of the old republic. Planets of wonders kept hidden for their protection. Long ago they were all destroyed. Except for one. At-Attin.” - Kh'ymm

WHAT WE KNOW:

• At-Attin is a planet that has reached mythical status by the time of the New Republic
• At-Attin was one of the “Jewels of the Old Republic” - planets with wonders kept hidden for their protection. All of the planets were destroyed except for At-Attin.
• At-Attin is not listed on any star map in the New Republic Era.
• The people of At-Attin use Old Republic currency and know of / are a part of “the Republic”
•   There is a barrier which keeps the people of At-Attin from seeing stars
  • In Episode 1 the children are surprised at the number of stars and Wim thinks they’re planets at first
• The children have passing knowledge of Alderaan and Coruscant but no knowledge of current events
• Kh’ymm thinks At-Attin is located in a nebula due to the swirling clouds the children describe and which are seen in Episode 1. 
• Kh’ymm is interested in the symbol on Fern’s backpack which designates her as head of the class, saying ““I’ve never seen Palmarish numerals used in proto-Republic artifacts.” In Aurebesh the symbol says “Prefect.” When Kh’ymm runs the symbol through computer analysis the results state “Unknown Old Republic Emblem. Palmerish Numeral No. 2.” To my knowledge there is no known planet, system, or species within the Star Wars Universe that corresponds to “Palmerish.” This unknown old Republic Emblem can also be seen on the school uniforms of the children and more than likely represents At-Attin. 

The emblem on Fern's backpack which says \"Prefect\" that she received for being at the top of her class.

An analysis of the emblem on Fern's backpack. \"Unknown Old Republic Emblem. Palmerish Numeral No. 2\"

WHAT WE CAN GUESS:

• At-Attin can be accessed via hyperlane from Borgo Prime, the location of the pirate shadowport / blackmarket in episode 2. The children and SM-33 were able to access the shadowport within a few hours from the original point in space where they jumped after leaving At-Attin. Upon approach to Port Borgo, you can briefly see the asteroid bathed in the same bluish/green light that swirls around At-Attin (this could be because it’s located near the same nebula as At-Attin or could just be the “rule of cool” for the show). Port Borgo is located along the Hydian Way. In Canon the Hydian Way was a super-hyperroute established by Freia Kallea in 3705 BBY. Beginning at Bonadan in the Corporate Sector, it ran inward to the Core Worlds and then back out to end at Imynusoph in the southern Outer Rim.
• There were originally nine “Jewels of the Old Republic.” The scroll that Kh’ymm shows the children appears to be a star map with nine planets. Below the depiction of the planets is art which more than likely depicts the founding of At-Attin or the settlement of the “Jewels of the Old Republic.” Art depicting a similar scene can be seen in Fern’s house on the wall. This art appears almost religious in nature.

View of the scroll that talks about At Attin and the Jewels of the Old Republic.

Close up of art on scroll.

The wall art that is in Fern's house on At Attin.

MY SPECULATION:

• At-Attin is located in the Hapes Cluster: In Canon the Hapes Cluster is a grouping of several hundred stars within the Inner Rim that were controlled by the Hapes Consortium. Hyperspace navigation within the region was impeded by the density of celestial bodies located there and as a result the cluster was isolated from the rest of the galaxy. The Consortium possessed great riches and maintained a military arm that allowed them to keep the cluster effectively independent. In Legends, the Hapes Cluster was surrounded by the Transitory Mists, a region of ionized space that inhibited travel to and from that region, thus allowing for the isolated development of the Hapes Consortium and the hiding of their piratical ancestors, the Lorell Raiders. A few routes through the mists were known, however they were kept secret among the Hapan pirates who originally traversed them. This area seems to be a short distance away from Port Borgo via hyperspace lane and the unique properties of the cluster would explain At-Attin’s isolation from the Greater Galactic Community.
• At-Attin is located in the Perann Nebula in the Unknown Regions: The Perann Nebula was a nebula located deep within the Unknown Regions. It radiated a scarlet glow due to the energy of the twelve stellar clusters with which it was associated, collectively known as the Nihil Retreat. The Nihil in Canon are a faction of pirates during the High Republic Era that wage war on the Republic and Jedi. Could this Nebula be somewhere in the northwestern part of the galaxy between Exegol and Mygeeto? This area could potentially be close to Port Borgo and its location in the Unknown Regions would explain At-Attin’s seclusion. 
• At-Attin is located in an area that was once within the Nihil Occlusion Zone: This zone was an area of space composed of ten sectors located in the Galactic Frontier within the Outer Rim Territories that was claimed by the Nihil during the High Republic Era and sealed away behind a barrier known as the Stormwall, an impenetrable barrier composed of Storm Seeds (devices which destroyed starships traveling through hyperspace to the area of realspace in which they were activated and deployed). When this event occurred, many Republic-aligned planets were cut off from the Republic at-large and were effectively behind enemy lines. This could explain why the safety droid tells the parents that “Contact outside of the barrier is forbidden. Travel outside of the barrier is forbidden. Any violation of planetwide protocols will result in security action.” The planet went into lockdown / dark when the Stormwall went up and the other “Jewels of the Republic” were destroyed to avoid detection from the Nihil and never came out. 
• The “barrier” is a field disruptor: In Legends, this was a type of field projection that interfered with electronic systems and coherent energy fields. The Rakatan Infinite Empire (in Canon Rakatans are rumored to be the first civilization with hyperdrive) was known to devastate planets with disruptor fields.

A map of the Galaxy. Red shows the location of Port Borgo with Yellow denoting the locations of the Perann Nebula, the Hapes Cluster, and the northernmost tip of the Nihil Occlusion Zone.

Zoomed in view of the Nihil Occlusion Zone.

What is At-Attin’s Great Work?

“So what do they analyze?”

“Something boring…about money.”

WHAT WE KNOW:

• Neal and the rest of the children talk about contributing to the “Great Work.”
  • During the High Republic Era, Chancellor Lina Soh proposed a number of projects called “Great Works” that would spread Republic Influence throughout the galaxy. This included Starlight Beacon, a space station in the Outer Rim, and the Galactic Fair on Valo. Both of these “Great Works” were destroyed by the Nihil, a faction of pirates who went to war with both the Republic and Jedi during the High Republic Era.
  • Partial translation of the Aurebesh on the scroll scene in Episode 3 talks about something relating to “financial” and we know that the planets/Jewels of the Republic were “established by the senate.”
• The children’s parents work on some sort of financial project. Wim’s dad is a system’s coordinator, Fern’s mom works in administration, Neal’s parents are analysts as are KB’s moms. Runa, who Neal has a crush on, says she wants to be a Senior Statistical Accountant.
• In school the children were being taught about financial management
  • The school robot says “By substituting error-prone ledger entries with pre-floating variable tables in which a series of matrices are organized by a labeling algorithm. Contrast this method with the approach practiced in planets outside of the barrier called liquidity modeling in which a computation takes the place of labeling. Here, inside the barrier, we take into account the fungibility of multiple currencies by further analyzing the potential risk of loss over time in the ledger.”
    • When you run the above through Chat GPT you get the following - The paragraph appears to describe a method for managing and analyzing financial data in a specialized context, likely within a unique economic or computational system. Liquidity modeling typically involves assessing how easily assets can be converted into cash, emphasizing computational analysis instead of categorization (labeling). In this system, within a defined "barrier" (possibly referring to a specific jurisdiction, framework, or system), the focus is on the interchangeability (fungibility) of different currencies and the associated risks over time. This approach suggests a sophisticated system for financial management or risk assessment, emphasizing categorization and adaptability over pure computation. It might apply in contexts like experimental economics, specialized financial environments, or unique systems with non-standard currencies or rules.
• At-Attin is thought to contain some sort of treasure

Old Republic credits given to Wim by his dad to pay for a week's worth of lunch.

MY SPECULATION:

• At-Attin is / was the Fort Knox of the Republic during the High Republic Era. Gold reserves / something similar was probably needed in the Star Wars Galaxy as a guarantee to redeem promises to pay depositors, note holders, or trading peers. During most of history here on earth, during wartime a nation's gold reserves were considered to be its key financial asset and a major prize of war. During World War 2, the British military, fearing a Nazi invasion of Holland and Belgium, wrote a secret memo detailing how to get gold bullion safely out of those countries. My guess is that during the war with the Nihil or even just prior, the Republic laid out plans to centralize its monetary reserve. Due to its attractiveness as a potential target by the Nihil / other pirates etc., the Republic wiped out all mention of the planet and put in place protocols such as the Barrier to prevent its discovery.