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Taygeta 3 (also known as Erra, Pleiades Prime or the Blue Gem) is the third out of 8 planets orbiting the blue subgiant star Taygeta in the Pleiades cluster. It is classified as a warm terra and is orbited by 17 moons.


It was discovered in 2241 by the Midnight Observatory on the 2nd planet of the 111 Tauri system. An unmanned probe was launched to study the planet and arrived in 2553. While no life was detected, it was chosen to be Humanity's first colony world in the Pleiades. Construction of cities and surface transportation networks began in 2651 and was finished in 2362 which is when Human colonists arrived and began to live in its cities.

The planet is the home of two large domed cities, named the Twin Domes, both of which, are connected via long distance transportation networks consisting of fast train-like vehicles. A few smaller cities were constructed on other parts of the planet, Liberty being one the most famous ones, increasing its population from 20 million to 60 million. All of the cities have a controlled temperature of 17 to 20 degrees Celsius.

The planet was originally going to be terraformed however funding was lost and terraforming was cancelled. Denizens of Taygeta 3 are actually ok with this as they think the planet is already beautiful as it is.

Taygeta flag.png

A flag was created for the planet when it's colonisation was finally finished, the meanings are:

  • Black: It's loneliness within the Pleiades Cluster
  • Blue: It's recognizable blue surface
  • White: Peace
  • Circle with spikes: Touristic attraction
  • Central circle: The parent star Taygeta

As of now, the planet doesn't gain much tourism and has become a backwater colony as it is still not terraformed and at this rate likely never will be anytime soon. Because of this, the planet never gets involved in any wars, acting as a sort of secret "safe-haven".


The planet has a gravity of 1.717 g's, and an axial-tilt of 48 degrees. It has a 12-hour long rotation and takes 21 years (7665 days) to orbit Taygeta. The planet has relatively calm weather aside from a few hurricanes, tornadoes and dust storms. The average temperature on this planet is 80 degrees celsius. It has a diameter of 13.113 kilometers.

Much of surface is largely given to deserts, mountains and small oceans.


17 moons orbit around Taygeta 3, seven of which are large enough to be spheres (albeit devoid of atmospheres) with the rest being asteroids, likely captured by the planet's gravity. A communications outpost has been built on its nearest moon to the planet.

The closest major of Taygeta 3.